./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_poly2_false-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_6f157803-3ef2-4ccf-8c3d-738255c8b158/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6f157803-3ef2-4ccf-8c3d-738255c8b158/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6f157803-3ef2-4ccf-8c3d-738255c8b158/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6f157803-3ef2-4ccf-8c3d-738255c8b158/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_poly2_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_6f157803-3ef2-4ccf-8c3d-738255c8b158/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6f157803-3ef2-4ccf-8c3d-738255c8b158/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 b63905375af38d9971341930078b6c47230c38fd .............................................................................................................................................................................................................................................................................. 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_6f157803-3ef2-4ccf-8c3d-738255c8b158/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6f157803-3ef2-4ccf-8c3d-738255c8b158/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6f157803-3ef2-4ccf-8c3d-738255c8b158/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6f157803-3ef2-4ccf-8c3d-738255c8b158/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_poly2_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_6f157803-3ef2-4ccf-8c3d-738255c8b158/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6f157803-3ef2-4ccf-8c3d-738255c8b158/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 b63905375af38d9971341930078b6c47230c38fd ............................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 17:53:56,600 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 17:53:56,601 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 17:53:56,616 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 17:53:56,616 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 17:53:56,617 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 17:53:56,618 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 17:53:56,619 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 17:53:56,621 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 17:53:56,622 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 17:53:56,622 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 17:53:56,622 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 17:53:56,623 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 17:53:56,624 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 17:53:56,625 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 17:53:56,626 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 17:53:56,626 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 17:53:56,628 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 17:53:56,630 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 17:53:56,631 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 17:53:56,632 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 17:53:56,632 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 17:53:56,634 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 17:53:56,635 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 17:53:56,635 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 17:53:56,635 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 17:53:56,636 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 17:53:56,637 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 17:53:56,638 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 17:53:56,639 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 17:53:56,639 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 17:53:56,639 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 17:53:56,639 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 17:53:56,640 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 17:53:56,640 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 17:53:56,642 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 17:53:56,642 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6f157803-3ef2-4ccf-8c3d-738255c8b158/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 17:53:56,653 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 17:53:56,653 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 17:53:56,654 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 17:53:56,654 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 17:53:56,654 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 17:53:56,654 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 17:53:56,654 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 17:53:56,654 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 17:53:56,655 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 17:53:56,655 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 17:53:56,655 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 17:53:56,655 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 17:53:56,655 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 17:53:56,656 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 17:53:56,656 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 17:53:56,656 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 17:53:56,656 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 17:53:56,656 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 17:53:56,656 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 17:53:56,657 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 17:53:56,658 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 17:53:56,658 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 17:53:56,659 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 17:53:56,659 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 17:53:56,659 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 17:53:56,659 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 17:53:56,659 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 17:53:56,659 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 17:53:56,660 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 17:53:56,660 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:53:56,660 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 17:53:56,660 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 17:53:56,660 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 17:53:56,660 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 17:53:56,661 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 17:53:56,661 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 17:53:56,661 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 17:53:56,661 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_6f157803-3ef2-4ccf-8c3d-738255c8b158/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 -> b63905375af38d9971341930078b6c47230c38fd [2018-11-18 17:53:56,689 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 17:53:56,700 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 17:53:56,705 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 17:53:56,706 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 17:53:56,706 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 17:53:56,707 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6f157803-3ef2-4ccf-8c3d-738255c8b158/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/sqrt_poly2_false-unreach-call.c [2018-11-18 17:53:56,752 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6f157803-3ef2-4ccf-8c3d-738255c8b158/bin-2019/utaipan/data/c28643948/972444fe593844229e7ead1ca77799e2/FLAGfcc31a15a [2018-11-18 17:53:57,156 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 17:53:57,157 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6f157803-3ef2-4ccf-8c3d-738255c8b158/sv-benchmarks/c/float-benchs/sqrt_poly2_false-unreach-call.c [2018-11-18 17:53:57,162 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6f157803-3ef2-4ccf-8c3d-738255c8b158/bin-2019/utaipan/data/c28643948/972444fe593844229e7ead1ca77799e2/FLAGfcc31a15a [2018-11-18 17:53:57,173 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6f157803-3ef2-4ccf-8c3d-738255c8b158/bin-2019/utaipan/data/c28643948/972444fe593844229e7ead1ca77799e2 [2018-11-18 17:53:57,178 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 17:53:57,179 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 17:53:57,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 17:53:57,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 17:53:57,183 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 17:53:57,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:53:57" (1/1) ... [2018-11-18 17:53:57,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42d40a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:53:57, skipping insertion in model container [2018-11-18 17:53:57,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:53:57" (1/1) ... [2018-11-18 17:53:57,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 17:53:57,217 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 17:53:57,364 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:53:57,368 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 17:53:57,388 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:53:57,404 INFO L195 MainTranslator]: Completed translation [2018-11-18 17:53:57,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:53:57 WrapperNode [2018-11-18 17:53:57,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 17:53:57,406 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 17:53:57,406 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 17:53:57,406 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 17:53:57,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:53:57" (1/1) ... [2018-11-18 17:53:57,423 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:53:57" (1/1) ... [2018-11-18 17:53:57,442 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 17:53:57,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 17:53:57,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 17:53:57,443 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 17:53:57,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:53:57" (1/1) ... [2018-11-18 17:53:57,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:53:57" (1/1) ... [2018-11-18 17:53:57,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:53:57" (1/1) ... [2018-11-18 17:53:57,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:53:57" (1/1) ... [2018-11-18 17:53:57,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:53:57" (1/1) ... [2018-11-18 17:53:57,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:53:57" (1/1) ... [2018-11-18 17:53:57,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:53:57" (1/1) ... [2018-11-18 17:53:57,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 17:53:57,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 17:53:57,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 17:53:57,471 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 17:53:57,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:53:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6f157803-3ef2-4ccf-8c3d-738255c8b158/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 17:53:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 17:53:57,598 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 17:53:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-18 17:53:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 17:53:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 17:53:57,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 17:53:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-18 17:53:57,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 17:53:57,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 17:53:57,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 17:53:57,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 17:53:57,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 17:53:57,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 17:53:57,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 17:53:57,599 INFO L130 BoogieDeclarations]: Found specification of procedure sqrt_custom [2018-11-18 17:53:57,599 INFO L138 BoogieDeclarations]: Found implementation of procedure sqrt_custom [2018-11-18 17:53:58,033 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 17:53:58,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:53:58 BoogieIcfgContainer [2018-11-18 17:53:58,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 17:53:58,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 17:53:58,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 17:53:58,036 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 17:53:58,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 05:53:57" (1/3) ... [2018-11-18 17:53:58,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24704f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:53:58, skipping insertion in model container [2018-11-18 17:53:58,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:53:57" (2/3) ... [2018-11-18 17:53:58,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24704f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:53:58, skipping insertion in model container [2018-11-18 17:53:58,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:53:58" (3/3) ... [2018-11-18 17:53:58,055 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_poly2_false-unreach-call.c [2018-11-18 17:53:58,070 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 17:53:58,088 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 17:53:58,115 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 17:53:58,165 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 17:53:58,171 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 17:53:58,171 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 17:53:58,171 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 17:53:58,171 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 17:53:58,171 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 17:53:58,171 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 17:53:58,171 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 17:53:58,187 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-11-18 17:53:58,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 17:53:58,194 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:53:58,195 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 17:53:58,196 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:53:58,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:53:58,209 INFO L82 PathProgramCache]: Analyzing trace with hash 230068877, now seen corresponding path program 1 times [2018-11-18 17:53:58,212 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:53:58,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:53:58,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:53:58,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:53:58,258 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:53:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:53:58,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:53:58,387 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 17:53:58,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 05:53:58 BoogieIcfgContainer [2018-11-18 17:53:58,413 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 17:53:58,414 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 17:53:58,417 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 17:53:58,417 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 17:53:58,418 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:53:58" (3/4) ... [2018-11-18 17:53:58,421 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 17:53:58,422 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 17:53:58,422 INFO L168 Benchmark]: Toolchain (without parser) took 1244.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.9 MB). Free memory was 958.0 MB in the beginning and 1.1 GB in the end (delta: -155.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-18 17:53:58,424 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 17:53:58,424 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.85 ms. Allocated memory is still 1.0 GB. Free memory was 958.0 MB in the beginning and 944.6 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-18 17:53:58,425 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.72 ms. Allocated memory is still 1.0 GB. Free memory is still 944.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:53:58,426 INFO L168 Benchmark]: Boogie Preprocessor took 25.78 ms. Allocated memory is still 1.0 GB. Free memory was 944.6 MB in the beginning and 941.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 17:53:58,426 INFO L168 Benchmark]: RCFGBuilder took 562.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.9 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -199.6 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. [2018-11-18 17:53:58,427 INFO L168 Benchmark]: TraceAbstraction took 379.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 11.5 GB. [2018-11-18 17:53:58,428 INFO L168 Benchmark]: Witness Printer took 7.85 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 17:53:58,432 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 225.85 ms. Allocated memory is still 1.0 GB. Free memory was 958.0 MB in the beginning and 944.6 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 36.72 ms. Allocated memory is still 1.0 GB. Free memory is still 944.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.78 ms. Allocated memory is still 1.0 GB. Free memory was 944.6 MB in the beginning and 941.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 562.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.9 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -199.6 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 379.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 11.5 GB. * Witness Printer took 7.85 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 9]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 33, overapproximation of someUnaryDOUBLEoperation at line 15, overapproximation of someBinaryArithmeticDOUBLEoperation at line 46, overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryDOUBLEComparisonOperation at line 56. Possible FailurePath: [L12] double C0 = 1.414213538; [L13] double C1 = 0.229761391; [L14] double C2 = 1.296735525; [L15] double C3 = -0.901098370; [L16] double C4 = 0.493553400; [L17] double C5 = -0.118958666; VAL [\old(C0)=14, \old(C1)=23, \old(C2)=17, \old(C3)=24, \old(C4)=16, \old(C5)=21, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L53] double x,y; [L55] x = __VERIFIER_nondet_double() [L58] CALL, EXPR sqrt_custom(x) VAL [\old(a)=12, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L26] FCALL union u x; [L27] double r; [L28] int exp; [L30] FCALL x.d = a [L32] EXPR, FCALL x.i[0] [L32] exp = (x.i[0] & 0x7FF00000) >> 20 [L33] EXPR, FCALL x.i[0] [L33] FCALL x.i[0] = (x.i[0] & 0x800FFFFF) | 0x3FF00000 [L34] EXPR, FCALL x.d [L34] r = x.d * 0.5 [L36] r = C1+C2+(C3+(C4+C5*r)*r)*r VAL [\old(a)=12, a=12, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=-4, x={20:0}] [L38] COND TRUE exp % 2 == 0 [L39] exp++ VAL [\old(a)=12, a=12, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=-3, x={20:0}] [L45] FCALL x.i[0] = (exp/2 + 511) << 20 [L46] EXPR, FCALL x.d [L46] r = r * x.d [L48] return r; [L48] RET return r; VAL [\old(a)=12, \result=22, a=12, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=-3, r=22] [L58] EXPR sqrt_custom(x) VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, sqrt_custom(x)=22, x=12] [L58] y = sqrt_custom(x) [L60] CALL __VERIFIER_assert(y >= 0. && y <= 1e6) VAL [\old(cond)=0, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L9] COND TRUE !(cond) VAL [\old(cond)=0, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, cond=0] [L9] __VERIFIER_error() VAL [\old(cond)=0, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 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=25occurred 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, 17 NumberOfCodeBlocks, 17 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 0.1.23-5842f4b [2018-11-18 17:54:00,104 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 17:54:00,105 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 17:54:00,114 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 17:54:00,114 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 17:54:00,115 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 17:54:00,116 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 17:54:00,117 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 17:54:00,118 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 17:54:00,119 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 17:54:00,120 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 17:54:00,120 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 17:54:00,121 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 17:54:00,122 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 17:54:00,123 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 17:54:00,123 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 17:54:00,124 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 17:54:00,126 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 17:54:00,127 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 17:54:00,128 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 17:54:00,129 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 17:54:00,130 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 17:54:00,132 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 17:54:00,132 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 17:54:00,132 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 17:54:00,133 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 17:54:00,134 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 17:54:00,135 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 17:54:00,135 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 17:54:00,137 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 17:54:00,137 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 17:54:00,137 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 17:54:00,138 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 17:54:00,138 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 17:54:00,138 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 17:54:00,139 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 17:54:00,139 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6f157803-3ef2-4ccf-8c3d-738255c8b158/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-18 17:54:00,151 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 17:54:00,151 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 17:54:00,152 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 17:54:00,152 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 17:54:00,152 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 17:54:00,152 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 17:54:00,152 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 17:54:00,153 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 17:54:00,153 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 17:54:00,153 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 17:54:00,154 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 17:54:00,154 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 17:54:00,154 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 17:54:00,154 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 17:54:00,155 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 17:54:00,155 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 17:54:00,155 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 17:54:00,155 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 17:54:00,155 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 17:54:00,155 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 17:54:00,155 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 17:54:00,156 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 17:54:00,156 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 17:54:00,156 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 17:54:00,156 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 17:54:00,156 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 17:54:00,156 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 17:54:00,156 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:54:00,157 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 17:54:00,159 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 17:54:00,159 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 17:54:00,159 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 17:54:00,159 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 17:54:00,159 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 17:54:00,159 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 17:54:00,159 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_6f157803-3ef2-4ccf-8c3d-738255c8b158/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 -> b63905375af38d9971341930078b6c47230c38fd [2018-11-18 17:54:00,192 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 17:54:00,203 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 17:54:00,205 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 17:54:00,206 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 17:54:00,207 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 17:54:00,207 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6f157803-3ef2-4ccf-8c3d-738255c8b158/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/sqrt_poly2_false-unreach-call.c [2018-11-18 17:54:00,251 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6f157803-3ef2-4ccf-8c3d-738255c8b158/bin-2019/utaipan/data/3fc94a405/8fa84f4b35dc4887ba20f052c0b02153/FLAG9ece9f252 [2018-11-18 17:54:00,587 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 17:54:00,588 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6f157803-3ef2-4ccf-8c3d-738255c8b158/sv-benchmarks/c/float-benchs/sqrt_poly2_false-unreach-call.c [2018-11-18 17:54:00,592 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6f157803-3ef2-4ccf-8c3d-738255c8b158/bin-2019/utaipan/data/3fc94a405/8fa84f4b35dc4887ba20f052c0b02153/FLAG9ece9f252 [2018-11-18 17:54:01,030 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6f157803-3ef2-4ccf-8c3d-738255c8b158/bin-2019/utaipan/data/3fc94a405/8fa84f4b35dc4887ba20f052c0b02153 [2018-11-18 17:54:01,032 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 17:54:01,033 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 17:54:01,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 17:54:01,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 17:54:01,038 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 17:54:01,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:54:01" (1/1) ... [2018-11-18 17:54:01,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3973ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:54:01, skipping insertion in model container [2018-11-18 17:54:01,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:54:01" (1/1) ... [2018-11-18 17:54:01,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 17:54:01,065 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 17:54:01,209 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:54:01,215 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 17:54:01,238 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:54:01,260 INFO L195 MainTranslator]: Completed translation [2018-11-18 17:54:01,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:54:01 WrapperNode [2018-11-18 17:54:01,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 17:54:01,262 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 17:54:01,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 17:54:01,263 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 17:54:01,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:54:01" (1/1) ... [2018-11-18 17:54:01,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:54:01" (1/1) ... [2018-11-18 17:54:01,285 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 17:54:01,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 17:54:01,286 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 17:54:01,286 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 17:54:01,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:54:01" (1/1) ... [2018-11-18 17:54:01,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:54:01" (1/1) ... [2018-11-18 17:54:01,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:54:01" (1/1) ... [2018-11-18 17:54:01,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:54:01" (1/1) ... [2018-11-18 17:54:01,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:54:01" (1/1) ... [2018-11-18 17:54:01,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:54:01" (1/1) ... [2018-11-18 17:54:01,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:54:01" (1/1) ... [2018-11-18 17:54:01,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 17:54:01,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 17:54:01,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 17:54:01,312 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 17:54:01,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:54:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6f157803-3ef2-4ccf-8c3d-738255c8b158/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 17:54:01,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-11-18 17:54:01,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-11-18 17:54:01,417 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 17:54:01,417 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 17:54:01,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 17:54:01,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 17:54:01,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 17:54:01,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 17:54:01,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 17:54:01,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 17:54:01,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 17:54:01,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 17:54:01,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 17:54:01,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 17:54:01,419 INFO L130 BoogieDeclarations]: Found specification of procedure sqrt_custom [2018-11-18 17:54:01,419 INFO L138 BoogieDeclarations]: Found implementation of procedure sqrt_custom [2018-11-18 17:54:03,778 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 17:54:04,463 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 17:54:04,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:54:04 BoogieIcfgContainer [2018-11-18 17:54:04,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 17:54:04,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 17:54:04,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 17:54:04,466 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 17:54:04,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 05:54:01" (1/3) ... [2018-11-18 17:54:04,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@392bb304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:54:04, skipping insertion in model container [2018-11-18 17:54:04,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:54:01" (2/3) ... [2018-11-18 17:54:04,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@392bb304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:54:04, skipping insertion in model container [2018-11-18 17:54:04,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:54:04" (3/3) ... [2018-11-18 17:54:04,468 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_poly2_false-unreach-call.c [2018-11-18 17:54:04,474 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 17:54:04,478 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 17:54:04,487 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 17:54:04,506 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 17:54:04,506 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 17:54:04,506 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 17:54:04,506 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 17:54:04,506 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 17:54:04,507 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 17:54:04,507 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 17:54:04,507 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 17:54:04,507 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 17:54:04,516 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-11-18 17:54:04,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 17:54:04,520 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:54:04,521 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 17:54:04,523 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:54:04,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:54:04,526 INFO L82 PathProgramCache]: Analyzing trace with hash 230068877, now seen corresponding path program 1 times [2018-11-18 17:54:04,529 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 17:54:04,529 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6f157803-3ef2-4ccf-8c3d-738255c8b158/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 17:54:04,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:54:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:54:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:54:07,668 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 17:54:07,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 05:54:07 BoogieIcfgContainer [2018-11-18 17:54:07,717 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 17:54:07,717 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 17:54:07,717 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 17:54:07,718 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 17:54:07,718 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:54:04" (3/4) ... [2018-11-18 17:54:07,720 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 17:54:07,766 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_6f157803-3ef2-4ccf-8c3d-738255c8b158/bin-2019/utaipan/witness.graphml [2018-11-18 17:54:07,766 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 17:54:07,767 INFO L168 Benchmark]: Toolchain (without parser) took 6734.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -112.6 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-18 17:54:07,768 INFO L168 Benchmark]: CDTParser took 0.14 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 17:54:07,768 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.30 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 17:54:07,768 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.87 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 17:54:07,769 INFO L168 Benchmark]: Boogie Preprocessor took 25.77 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 17:54:07,770 INFO L168 Benchmark]: RCFGBuilder took 3151.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -156.2 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. [2018-11-18 17:54:07,770 INFO L168 Benchmark]: TraceAbstraction took 3253.06 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: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2018-11-18 17:54:07,771 INFO L168 Benchmark]: Witness Printer took 48.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2018-11-18 17:54:07,773 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 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 227.30 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 23.87 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 25.77 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 3151.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -156.2 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3253.06 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: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Witness Printer took 48.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 9]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] double C0 = 1.414213538; [L13] double C1 = 0.229761391; [L14] double C2 = 1.296735525; [L15] double C3 = -0.901098370; [L16] double C4 = 0.493553400; [L17] double C5 = -0.118958666; VAL [\old(C0)=0.000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000035, \old(C1)=0.000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010, \old(C2)=0.000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000015, \old(C3)=0.000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000025, \old(C4)=0.000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000030, \old(C5)=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000049, C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L53] double x,y; [L55] x = __VERIFIER_nondet_double() [L58] CALL, EXPR sqrt_custom(x) VAL [\old(a)=1.1641532182693488, C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L26] FCALL union u x; [L27] double r; [L28] int exp; [L30] FCALL x.d = a [L32] EXPR, FCALL x.i[0] [L32] exp = (x.i[0] & 0x7FF00000) >> 20 [L33] EXPR, FCALL x.i[0] [L33] FCALL x.i[0] = (x.i[0] & 0x800FFFFF) | 0x3FF00000 [L34] EXPR, FCALL x.d [L34] r = x.d * 0.5 [L36] r = C1+C2+(C3+(C4+C5*r)*r)*r VAL [\old(a)=1.1641532182693488, a=1.1641532182693488, C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666, exp=512, r=1.1457505418517444, x={2:0}] [L38] COND TRUE exp % 2 == 0 [L39] exp++ VAL [\old(a)=1.1641532182693488, a=1.1641532182693488, C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666, exp=513, r=1.1457505418517444, x={2:0}] [L45] FCALL x.i[0] = (exp/2 + 511) << 20 [L46] EXPR, FCALL x.d [L46] r = r * x.d [L48] return r; [L48] RET return r; VAL [\old(a)=1.1641532182693488, \result=-0.00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000455271019, a=1.1641532182693488, C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666, exp=513, r=-0.00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000455271019] [L58] EXPR sqrt_custom(x) VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666, sqrt_custom(x)=-0.00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000455271019, x=1.1641532182693488] [L58] y = sqrt_custom(x) [L60] CALL __VERIFIER_assert(y >= 0. && y <= 1e6) VAL [\old(cond)=0, C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L9] COND TRUE !(cond) VAL [\old(cond)=0, C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666, cond=0] [L9] __VERIFIER_error() VAL [\old(cond)=0, C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. UNSAFE Result, 3.2s 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=25occurred 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, 1.4s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...