./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-benchs/loop_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_13d4f180-d905-40f7-aebd-814b3f4818d8/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_13d4f180-d905-40f7-aebd-814b3f4818d8/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_13d4f180-d905-40f7-aebd-814b3f4818d8/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_13d4f180-d905-40f7-aebd-814b3f4818d8/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/loop_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_13d4f180-d905-40f7-aebd-814b3f4818d8/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_13d4f180-d905-40f7-aebd-814b3f4818d8/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 5d57b69a18e01217b153b00cc1c03d5a7a42828b ........................................................................................................................................................................................................................................................................................ 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_13d4f180-d905-40f7-aebd-814b3f4818d8/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_13d4f180-d905-40f7-aebd-814b3f4818d8/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_13d4f180-d905-40f7-aebd-814b3f4818d8/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_13d4f180-d905-40f7-aebd-814b3f4818d8/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/loop_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_13d4f180-d905-40f7-aebd-814b3f4818d8/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_13d4f180-d905-40f7-aebd-814b3f4818d8/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 5d57b69a18e01217b153b00cc1c03d5a7a42828b ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 16:28:32,233 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:28:32,235 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:28:32,243 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:28:32,244 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:28:32,244 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:28:32,245 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:28:32,247 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:28:32,248 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:28:32,248 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:28:32,249 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:28:32,249 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:28:32,250 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:28:32,251 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:28:32,252 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:28:32,252 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:28:32,253 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:28:32,254 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:28:32,255 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:28:32,256 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:28:32,257 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:28:32,258 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:28:32,259 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:28:32,260 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:28:32,260 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:28:32,260 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:28:32,261 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:28:32,262 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:28:32,262 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:28:32,263 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:28:32,263 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:28:32,263 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:28:32,264 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:28:32,264 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:28:32,264 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:28:32,265 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:28:32,265 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_13d4f180-d905-40f7-aebd-814b3f4818d8/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 16:28:32,275 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:28:32,275 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:28:32,276 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:28:32,276 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 16:28:32,276 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 16:28:32,276 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 16:28:32,276 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 16:28:32,277 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 16:28:32,277 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 16:28:32,277 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 16:28:32,277 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 16:28:32,277 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 16:28:32,277 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 16:28:32,278 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:28:32,278 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 16:28:32,278 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 16:28:32,278 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 16:28:32,278 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:28:32,278 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 16:28:32,278 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:28:32,279 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 16:28:32,279 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 16:28:32,279 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:28:32,279 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:28:32,279 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 16:28:32,279 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:28:32,279 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:28:32,279 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:28:32,280 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 16:28:32,280 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:28:32,280 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:28:32,280 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:28:32,280 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 16:28:32,280 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 16:28:32,280 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:28:32,280 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 16:28:32,281 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 16:28:32,281 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_13d4f180-d905-40f7-aebd-814b3f4818d8/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 -> 5d57b69a18e01217b153b00cc1c03d5a7a42828b [2018-11-18 16:28:32,303 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:28:32,311 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:28:32,313 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:28:32,315 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:28:32,315 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:28:32,315 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_13d4f180-d905-40f7-aebd-814b3f4818d8/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/loop_true-unreach-call.c [2018-11-18 16:28:32,352 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_13d4f180-d905-40f7-aebd-814b3f4818d8/bin-2019/utaipan/data/b6425b107/73a396081f094ad2aad39adc1210cb35/FLAG10600a66a [2018-11-18 16:28:32,742 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:28:32,743 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_13d4f180-d905-40f7-aebd-814b3f4818d8/sv-benchmarks/c/float-benchs/loop_true-unreach-call.c [2018-11-18 16:28:32,746 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_13d4f180-d905-40f7-aebd-814b3f4818d8/bin-2019/utaipan/data/b6425b107/73a396081f094ad2aad39adc1210cb35/FLAG10600a66a [2018-11-18 16:28:32,754 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_13d4f180-d905-40f7-aebd-814b3f4818d8/bin-2019/utaipan/data/b6425b107/73a396081f094ad2aad39adc1210cb35 [2018-11-18 16:28:32,756 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:28:32,757 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 16:28:32,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:28:32,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:28:32,760 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:28:32,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:28:32" (1/1) ... [2018-11-18 16:28:32,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4546e68c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:28:32, skipping insertion in model container [2018-11-18 16:28:32,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:28:32" (1/1) ... [2018-11-18 16:28:32,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:28:32,779 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:28:32,882 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:28:32,885 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:28:32,894 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:28:32,904 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:28:32,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:28:32 WrapperNode [2018-11-18 16:28:32,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:28:32,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 16:28:32,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 16:28:32,905 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 16:28:32,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:28:32" (1/1) ... [2018-11-18 16:28:32,913 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:28:32" (1/1) ... [2018-11-18 16:28:32,916 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 16:28:32,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:28:32,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:28:32,917 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:28:32,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:28:32" (1/1) ... [2018-11-18 16:28:32,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:28:32" (1/1) ... [2018-11-18 16:28:32,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:28:32" (1/1) ... [2018-11-18 16:28:32,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:28:32" (1/1) ... [2018-11-18 16:28:32,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:28:32" (1/1) ... [2018-11-18 16:28:32,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:28:32" (1/1) ... [2018-11-18 16:28:32,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:28:32" (1/1) ... [2018-11-18 16:28:32,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:28:32,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:28:32,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:28:32,930 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:28:32,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:28:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_13d4f180-d905-40f7-aebd-814b3f4818d8/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 16:28:32,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 16:28:32,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 16:28:32,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:28:32,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:28:32,997 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 16:28:32,997 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 16:28:32,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 16:28:32,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 16:28:33,075 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:28:33,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:28:33 BoogieIcfgContainer [2018-11-18 16:28:33,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:28:33,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 16:28:33,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 16:28:33,078 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 16:28:33,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:28:32" (1/3) ... [2018-11-18 16:28:33,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6feb8c59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:28:33, skipping insertion in model container [2018-11-18 16:28:33,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:28:32" (2/3) ... [2018-11-18 16:28:33,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6feb8c59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:28:33, skipping insertion in model container [2018-11-18 16:28:33,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:28:33" (3/3) ... [2018-11-18 16:28:33,080 INFO L112 eAbstractionObserver]: Analyzing ICFG loop_true-unreach-call.c [2018-11-18 16:28:33,085 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 16:28:33,089 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 16:28:33,097 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 16:28:33,116 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 16:28:33,116 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 16:28:33,116 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 16:28:33,116 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:28:33,116 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:28:33,116 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 16:28:33,117 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:28:33,117 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 16:28:33,126 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-18 16:28:33,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 16:28:33,129 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:28:33,130 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:28:33,131 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:28:33,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:28:33,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1871509567, now seen corresponding path program 1 times [2018-11-18 16:28:33,136 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:28:33,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:28:33,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:28:33,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:28:33,165 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:28:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:28:33,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:28:33,197 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:28:33,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 16:28:33,197 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:28:33,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 16:28:33,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 16:28:33,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 16:28:33,209 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-11-18 16:28:33,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:28:33,220 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2018-11-18 16:28:33,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 16:28:33,221 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-18 16:28:33,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:28:33,225 INFO L225 Difference]: With dead ends: 31 [2018-11-18 16:28:33,225 INFO L226 Difference]: Without dead ends: 12 [2018-11-18 16:28:33,227 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 16:28:33,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-18 16:28:33,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-18 16:28:33,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-18 16:28:33,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-18 16:28:33,253 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-11-18 16:28:33,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:28:33,253 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-18 16:28:33,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 16:28:33,254 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-18 16:28:33,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 16:28:33,254 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:28:33,254 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:28:33,254 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:28:33,255 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:28:33,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1861991801, now seen corresponding path program 1 times [2018-11-18 16:28:33,255 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:28:33,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:28:33,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:28:33,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:28:33,256 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:28:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:28:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:28:33,280 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 16:28:33,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 04:28:33 BoogieIcfgContainer [2018-11-18 16:28:33,294 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 16:28:33,294 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 16:28:33,294 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 16:28:33,294 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 16:28:33,294 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:28:33" (3/4) ... [2018-11-18 16:28:33,297 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 16:28:33,297 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 16:28:33,297 INFO L168 Benchmark]: Toolchain (without parser) took 541.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.8 MB). Free memory was 959.1 MB in the beginning and 1.1 GB in the end (delta: -172.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:28:33,299 INFO L168 Benchmark]: CDTParser took 0.17 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 16:28:33,299 INFO L168 Benchmark]: CACSL2BoogieTranslator took 147.04 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:28:33,300 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.78 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:28:33,300 INFO L168 Benchmark]: Boogie Preprocessor took 13.53 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:28:33,300 INFO L168 Benchmark]: RCFGBuilder took 145.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.8 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -206.1 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-18 16:28:33,301 INFO L168 Benchmark]: TraceAbstraction took 217.53 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: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2018-11-18 16:28:33,302 INFO L168 Benchmark]: Witness Printer took 3.06 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 16:28:33,304 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 147.04 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.78 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.53 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 145.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.8 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -206.1 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 217.53 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: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. * Witness Printer took 3.06 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: 2]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 12. Possible FailurePath: [L6] float x, y, z; [L8] x = 1.f [L9] y = 1e7 [L10] z = 42.f VAL [x=1, y=10000000, z=42] [L12] COND FALSE !(x < y) VAL [x=1, y=10000000, z=42] [L18] CALL __VERIFIER_assert(z >= 0.f && z <= 1e8) VAL [\old(cond)=0] [L2] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L2] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 19 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 16:28:34,703 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:28:34,704 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:28:34,713 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:28:34,713 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:28:34,714 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:28:34,714 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:28:34,715 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:28:34,717 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:28:34,717 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:28:34,718 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:28:34,718 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:28:34,718 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:28:34,719 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:28:34,720 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:28:34,720 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:28:34,721 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:28:34,722 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:28:34,723 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:28:34,724 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:28:34,725 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:28:34,726 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:28:34,727 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:28:34,728 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:28:34,728 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:28:34,728 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:28:34,729 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:28:34,730 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:28:34,730 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:28:34,731 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:28:34,731 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:28:34,731 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:28:34,732 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:28:34,732 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:28:34,732 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:28:34,733 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:28:34,733 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_13d4f180-d905-40f7-aebd-814b3f4818d8/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-18 16:28:34,743 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:28:34,743 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:28:34,743 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:28:34,744 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 16:28:34,744 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 16:28:34,744 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 16:28:34,744 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 16:28:34,744 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 16:28:34,744 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 16:28:34,744 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 16:28:34,745 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:28:34,745 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 16:28:34,745 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 16:28:34,745 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:28:34,745 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 16:28:34,746 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:28:34,746 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 16:28:34,746 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 16:28:34,746 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 16:28:34,746 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 16:28:34,746 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:28:34,746 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:28:34,746 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 16:28:34,747 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:28:34,747 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:28:34,747 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:28:34,747 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 16:28:34,747 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:28:34,747 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:28:34,747 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:28:34,748 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 16:28:34,748 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 16:28:34,748 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:28:34,748 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 16:28:34,748 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 16:28:34,748 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_13d4f180-d905-40f7-aebd-814b3f4818d8/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 -> 5d57b69a18e01217b153b00cc1c03d5a7a42828b [2018-11-18 16:28:34,777 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:28:34,786 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:28:34,788 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:28:34,789 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:28:34,790 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:28:34,790 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_13d4f180-d905-40f7-aebd-814b3f4818d8/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/loop_true-unreach-call.c [2018-11-18 16:28:34,833 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_13d4f180-d905-40f7-aebd-814b3f4818d8/bin-2019/utaipan/data/f37dcf048/4b007a2045f44cbf8776bfa700876332/FLAGa1f41968f [2018-11-18 16:28:35,227 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:28:35,228 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_13d4f180-d905-40f7-aebd-814b3f4818d8/sv-benchmarks/c/float-benchs/loop_true-unreach-call.c [2018-11-18 16:28:35,231 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_13d4f180-d905-40f7-aebd-814b3f4818d8/bin-2019/utaipan/data/f37dcf048/4b007a2045f44cbf8776bfa700876332/FLAGa1f41968f [2018-11-18 16:28:35,240 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_13d4f180-d905-40f7-aebd-814b3f4818d8/bin-2019/utaipan/data/f37dcf048/4b007a2045f44cbf8776bfa700876332 [2018-11-18 16:28:35,242 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:28:35,243 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 16:28:35,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:28:35,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:28:35,246 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:28:35,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:28:35" (1/1) ... [2018-11-18 16:28:35,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61018694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:28:35, skipping insertion in model container [2018-11-18 16:28:35,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:28:35" (1/1) ... [2018-11-18 16:28:35,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:28:35,265 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:28:35,370 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:28:35,377 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:28:35,387 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:28:35,396 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:28:35,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:28:35 WrapperNode [2018-11-18 16:28:35,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:28:35,397 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 16:28:35,397 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 16:28:35,397 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 16:28:35,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:28:35" (1/1) ... [2018-11-18 16:28:35,406 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:28:35" (1/1) ... [2018-11-18 16:28:35,410 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 16:28:35,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:28:35,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:28:35,410 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:28:35,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:28:35" (1/1) ... [2018-11-18 16:28:35,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:28:35" (1/1) ... [2018-11-18 16:28:35,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:28:35" (1/1) ... [2018-11-18 16:28:35,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:28:35" (1/1) ... [2018-11-18 16:28:35,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:28:35" (1/1) ... [2018-11-18 16:28:35,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:28:35" (1/1) ... [2018-11-18 16:28:35,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:28:35" (1/1) ... [2018-11-18 16:28:35,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:28:35,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:28:35,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:28:35,429 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:28:35,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:28:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_13d4f180-d905-40f7-aebd-814b3f4818d8/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 16:28:35,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 16:28:35,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 16:28:35,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:28:35,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:28:35,510 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 16:28:35,511 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 16:28:35,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 16:28:35,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 16:28:36,069 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:28:36,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:28:36 BoogieIcfgContainer [2018-11-18 16:28:36,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:28:36,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 16:28:36,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 16:28:36,071 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 16:28:36,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:28:35" (1/3) ... [2018-11-18 16:28:36,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78ec5d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:28:36, skipping insertion in model container [2018-11-18 16:28:36,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:28:35" (2/3) ... [2018-11-18 16:28:36,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78ec5d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:28:36, skipping insertion in model container [2018-11-18 16:28:36,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:28:36" (3/3) ... [2018-11-18 16:28:36,074 INFO L112 eAbstractionObserver]: Analyzing ICFG loop_true-unreach-call.c [2018-11-18 16:28:36,081 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 16:28:36,084 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 16:28:36,093 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 16:28:36,112 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 16:28:36,113 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 16:28:36,113 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 16:28:36,113 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 16:28:36,113 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:28:36,113 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:28:36,113 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 16:28:36,114 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:28:36,114 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 16:28:36,126 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-18 16:28:36,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 16:28:36,130 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:28:36,130 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:28:36,132 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:28:36,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:28:36,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1871509567, now seen corresponding path program 1 times [2018-11-18 16:28:36,137 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 16:28:36,137 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_13d4f180-d905-40f7-aebd-814b3f4818d8/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 16:28:36,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:28:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:28:36,170 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:28:36,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:28:36,180 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 16:28:36,187 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:28:36,187 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 16:28:36,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 16:28:36,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 16:28:36,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 16:28:36,204 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-11-18 16:28:36,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:28:36,219 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2018-11-18 16:28:36,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 16:28:36,219 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-18 16:28:36,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:28:36,224 INFO L225 Difference]: With dead ends: 31 [2018-11-18 16:28:36,224 INFO L226 Difference]: Without dead ends: 12 [2018-11-18 16:28:36,226 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 16:28:36,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-18 16:28:36,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-18 16:28:36,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-18 16:28:36,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-18 16:28:36,246 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-11-18 16:28:36,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:28:36,247 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-18 16:28:36,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 16:28:36,247 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-18 16:28:36,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 16:28:36,247 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:28:36,247 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:28:36,248 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:28:36,248 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:28:36,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1861991801, now seen corresponding path program 1 times [2018-11-18 16:28:36,248 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 16:28:36,249 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_13d4f180-d905-40f7-aebd-814b3f4818d8/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-18 16:28:36,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:28:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:28:36,278 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:28:36,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:28:36,308 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 16:28:36,315 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:28:36,315 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 16:28:36,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 16:28:36,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 16:28:36,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 16:28:36,316 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2018-11-18 16:28:36,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:28:36,522 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-11-18 16:28:36,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 16:28:36,522 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-18 16:28:36,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:28:36,523 INFO L225 Difference]: With dead ends: 19 [2018-11-18 16:28:36,523 INFO L226 Difference]: Without dead ends: 14 [2018-11-18 16:28:36,523 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 16:28:36,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-18 16:28:36,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-18 16:28:36,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-18 16:28:36,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-11-18 16:28:36,526 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-11-18 16:28:36,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:28:36,526 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-11-18 16:28:36,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 16:28:36,527 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-18 16:28:36,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 16:28:36,527 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:28:36,527 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:28:36,527 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:28:36,527 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:28:36,527 INFO L82 PathProgramCache]: Analyzing trace with hash -661808769, now seen corresponding path program 1 times [2018-11-18 16:28:36,527 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 16:28:36,527 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_13d4f180-d905-40f7-aebd-814b3f4818d8/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-18 16:28:36,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:28:36,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:28:36,601 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:28:36,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:28:36,630 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 16:28:39,764 WARN L180 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-18 16:28:39,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:28:39,783 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:28:39,783 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_13d4f180-d905-40f7-aebd-814b3f4818d8/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:28:39,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:28:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:28:40,255 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:28:40,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:28:40,273 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 16:28:42,661 WARN L180 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 11 [2018-11-18 16:28:42,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:28:42,688 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 16:28:42,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4] total 7 [2018-11-18 16:28:42,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 16:28:42,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 16:28:42,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=23, Unknown=1, NotChecked=0, Total=42 [2018-11-18 16:28:42,690 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 7 states. [2018-11-18 16:28:49,675 WARN L180 SmtUtils]: Spent 3.08 s on a formula simplification that was a NOOP. DAG size: 10 [2018-11-18 16:28:53,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:28:53,806 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2018-11-18 16:28:53,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 16:28:53,807 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2018-11-18 16:28:53,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:28:53,807 INFO L225 Difference]: With dead ends: 25 [2018-11-18 16:28:53,807 INFO L226 Difference]: Without dead ends: 20 [2018-11-18 16:28:53,808 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=25, Invalid=29, Unknown=2, NotChecked=0, Total=56 [2018-11-18 16:28:53,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-18 16:28:53,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-11-18 16:28:53,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-18 16:28:53,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-11-18 16:28:53,812 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 13 [2018-11-18 16:28:53,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:28:53,812 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-11-18 16:28:53,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 16:28:53,812 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-11-18 16:28:53,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 16:28:53,813 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:28:53,813 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:28:53,813 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:28:53,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:28:53,813 INFO L82 PathProgramCache]: Analyzing trace with hash -875350895, now seen corresponding path program 2 times [2018-11-18 16:28:53,814 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 16:28:53,814 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_13d4f180-d905-40f7-aebd-814b3f4818d8/bin-2019/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-11-18 16:28:53,816 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-18 16:28:54,037 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 16:28:54,037 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 16:28:54,056 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:28:54,151 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:28:54,151 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 16:28:55,106 WARN L180 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-11-18 16:29:02,980 WARN L180 SmtUtils]: Spent 2.23 s on a formula simplification that was a NOOP. DAG size: 12 [2018-11-18 16:29:16,737 WARN L180 SmtUtils]: Spent 3.33 s on a formula simplification that was a NOOP. DAG size: 13 [2018-11-18 16:29:48,874 WARN L180 SmtUtils]: Spent 6.33 s on a formula simplification that was a NOOP. DAG size: 14 [2018-11-18 16:29:50,893 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven c_main_~z~0 .cse1) .cse1) .cse1) .cse1)))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven .cse0) ((_ to_fp 11 53) roundNearestTiesToEven 100000000.0)))) is different from false [2018-11-18 16:29:52,912 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven c_main_~z~0 .cse1) .cse1) .cse1) .cse1)))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven .cse0) ((_ to_fp 11 53) roundNearestTiesToEven 100000000.0)))) is different from true [2018-11-18 16:29:52,918 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 8 times theorem prover too weak. 0 trivial. 8 not checked. [2018-11-18 16:29:52,931 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:29:52,931 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_13d4f180-d905-40f7-aebd-814b3f4818d8/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:29:52,937 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 16:29:58,210 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 16:29:58,210 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 16:29:58,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:30:10,039 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:30:10,039 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 16:30:22,810 WARN L180 SmtUtils]: Spent 1.39 s on a formula simplification that was a NOOP. DAG size: 11 [2018-11-18 16:30:25,556 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (let ((.cse0 (fp.add roundNearestTiesToEven c_main_~x~0 .cse2)) (.cse1 (fp.sub roundNearestTiesToEven c_main_~y~0 .cse2))) (or (not (fp.lt .cse0 .cse1)) (fp.lt (fp.add roundNearestTiesToEven .cse0 .cse2) (fp.sub roundNearestTiesToEven .cse1 .cse2)) (not (fp.lt c_main_~x~0 c_main_~y~0))))) is different from true [2018-11-18 16:30:29,137 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (let ((.cse1 (fp.sub roundNearestTiesToEven c_main_~y~0 .cse3)) (.cse0 (fp.add roundNearestTiesToEven c_main_~x~0 .cse3))) (let ((.cse2 (fp.add roundNearestTiesToEven .cse0 .cse3)) (.cse4 (fp.sub roundNearestTiesToEven .cse1 .cse3))) (or (not (fp.lt .cse0 .cse1)) (fp.lt (fp.add roundNearestTiesToEven .cse2 .cse3) (fp.sub roundNearestTiesToEven .cse4 .cse3)) (not (fp.lt c_main_~x~0 c_main_~y~0)) (not (fp.lt .cse2 .cse4)))))) is different from true [2018-11-18 16:30:31,163 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (let ((.cse0 (fp.add roundNearestTiesToEven c_main_~x~0 .cse3)) (.cse1 (fp.sub roundNearestTiesToEven c_main_~y~0 .cse3))) (let ((.cse6 (fp.sub roundNearestTiesToEven .cse1 .cse3)) (.cse5 (fp.add roundNearestTiesToEven .cse0 .cse3))) (let ((.cse2 (fp.add roundNearestTiesToEven .cse5 .cse3)) (.cse4 (fp.sub roundNearestTiesToEven .cse6 .cse3))) (or (not (fp.lt .cse0 .cse1)) (fp.lt (fp.add roundNearestTiesToEven .cse2 .cse3) (fp.sub roundNearestTiesToEven .cse4 .cse3)) (not (fp.lt c_main_~x~0 c_main_~y~0)) (not (fp.lt .cse5 .cse6)) (not (fp.lt .cse2 .cse4))))))) is different from false [2018-11-18 16:30:33,184 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (let ((.cse0 (fp.add roundNearestTiesToEven c_main_~x~0 .cse3)) (.cse1 (fp.sub roundNearestTiesToEven c_main_~y~0 .cse3))) (let ((.cse6 (fp.sub roundNearestTiesToEven .cse1 .cse3)) (.cse5 (fp.add roundNearestTiesToEven .cse0 .cse3))) (let ((.cse2 (fp.add roundNearestTiesToEven .cse5 .cse3)) (.cse4 (fp.sub roundNearestTiesToEven .cse6 .cse3))) (or (not (fp.lt .cse0 .cse1)) (fp.lt (fp.add roundNearestTiesToEven .cse2 .cse3) (fp.sub roundNearestTiesToEven .cse4 .cse3)) (not (fp.lt c_main_~x~0 c_main_~y~0)) (not (fp.lt .cse5 .cse6)) (not (fp.lt .cse2 .cse4))))))) is different from true [2018-11-18 16:30:33,193 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 18 not checked. [2018-11-18 16:30:33,224 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 16:30:33,224 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7, 7] total 26 [2018-11-18 16:30:33,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-11-18 16:30:33,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-11-18 16:30:33,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=381, Unknown=14, NotChecked=172, Total=650 [2018-11-18 16:30:33,226 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 26 states. [2018-11-18 16:30:35,275 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (let ((.cse7 (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven c_main_~z~0 .cse3) .cse3) .cse3) .cse3))) (and (= c_main_~z~0 ((_ to_fp 8 24) roundNearestTiesToEven 42.0)) (let ((.cse0 (fp.add roundNearestTiesToEven c_main_~x~0 .cse3)) (.cse1 (fp.sub roundNearestTiesToEven c_main_~y~0 .cse3))) (let ((.cse6 (fp.sub roundNearestTiesToEven .cse1 .cse3)) (.cse5 (fp.add roundNearestTiesToEven .cse0 .cse3))) (let ((.cse2 (fp.add roundNearestTiesToEven .cse5 .cse3)) (.cse4 (fp.sub roundNearestTiesToEven .cse6 .cse3))) (or (not (fp.lt .cse0 .cse1)) (fp.lt (fp.add roundNearestTiesToEven .cse2 .cse3) (fp.sub roundNearestTiesToEven .cse4 .cse3)) (not (fp.lt c_main_~x~0 c_main_~y~0)) (not (fp.lt .cse5 .cse6)) (not (fp.lt .cse2 .cse4)))))) (fp.geq .cse7 (_ +zero 8 24)) (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 10000000.0)) c_main_~y~0) (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven .cse7) ((_ to_fp 11 53) roundNearestTiesToEven 100000000.0)) (= .cse3 c_main_~x~0)))) is different from true [2018-11-18 16:30:37,701 WARN L180 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 32 DAG size of output: 18 [2018-11-18 16:30:41,329 WARN L180 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 31 DAG size of output: 21 [2018-11-18 16:31:22,563 WARN L180 SmtUtils]: Spent 18.73 s on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-11-18 16:31:45,943 WARN L180 SmtUtils]: Spent 10.65 s on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2018-11-18 16:32:10,751 WARN L180 SmtUtils]: Spent 9.03 s on a formula simplification. DAG size of input: 15 DAG size of output: 12 [2018-11-18 16:32:46,009 WARN L180 SmtUtils]: Spent 15.72 s on a formula simplification. DAG size of input: 23 DAG size of output: 20 [2018-11-18 16:32:56,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:32:56,021 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-11-18 16:32:56,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-18 16:32:56,021 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 19 [2018-11-18 16:32:56,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:32:56,021 INFO L225 Difference]: With dead ends: 29 [2018-11-18 16:32:56,021 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 16:32:56,022 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 213.2s TimeCoverageRelationStatistics Valid=181, Invalid=750, Unknown=19, NotChecked=310, Total=1260 [2018-11-18 16:32:56,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 16:32:56,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 16:32:56,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 16:32:56,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 16:32:56,023 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2018-11-18 16:32:56,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:32:56,023 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 16:32:56,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-11-18 16:32:56,023 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 16:32:56,023 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 16:32:56,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 16:33:05,285 WARN L180 SmtUtils]: Spent 9.21 s on a formula simplification that was a NOOP. DAG size: 20 [2018-11-18 16:34:11,537 WARN L180 SmtUtils]: Spent 1.10 m on a formula simplification. DAG size of input: 76 DAG size of output: 12 [2018-11-18 16:34:11,539 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 16:34:11,539 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 16:34:11,539 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 16:34:11,539 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 16:34:11,539 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 16:34:11,539 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 16:34:11,539 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 4 20) the Hoare annotation is: true [2018-11-18 16:34:11,539 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 4 20) no Hoare annotation was computed. [2018-11-18 16:34:11,539 INFO L425 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-11-18 16:34:11,539 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 4 20) no Hoare annotation was computed. [2018-11-18 16:34:11,540 INFO L425 ceAbstractionStarter]: For program point L12-1(lines 12 16) no Hoare annotation was computed. [2018-11-18 16:34:11,540 INFO L421 ceAbstractionStarter]: At program point L12-3(lines 12 16) the Hoare annotation is: (and (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven (fp.add roundNearestTiesToEven main_~z~0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) ((_ to_fp 11 53) roundNearestTiesToEven 100000000.0)) (fp.geq main_~z~0 (_ +zero 8 24))) [2018-11-18 16:34:11,540 INFO L421 ceAbstractionStarter]: At program point L12-4(lines 12 16) the Hoare annotation is: (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (or (not (fp.lt main_~x~0 main_~y~0)) (fp.lt (fp.add roundNearestTiesToEven main_~x~0 .cse0) (fp.sub roundNearestTiesToEven main_~y~0 .cse0))) (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven (fp.add roundNearestTiesToEven main_~z~0 .cse0)) ((_ to_fp 11 53) roundNearestTiesToEven 100000000.0)) (fp.geq main_~z~0 (_ +zero 8 24)))) [2018-11-18 16:34:11,540 INFO L425 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2018-11-18 16:34:11,540 INFO L425 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2018-11-18 16:34:11,540 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2018-11-18 16:34:11,540 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2018-11-18 16:34:11,540 INFO L425 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2018-11-18 16:34:11,541 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2018-11-18 16:34:11,546 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 16:34:11,546 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 16:34:11,546 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 16:34:11,547 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 16:34:11,549 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 16:34:11,549 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 16:34:11,549 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 16:34:11,549 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 16:34:11,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 04:34:11 BoogieIcfgContainer [2018-11-18 16:34:11,551 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 16:34:11,551 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 16:34:11,551 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 16:34:11,551 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 16:34:11,551 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:28:36" (3/4) ... [2018-11-18 16:34:11,554 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 16:34:11,557 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 16:34:11,558 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 16:34:11,558 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-18 16:34:11,560 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-11-18 16:34:11,560 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-18 16:34:11,560 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 16:34:11,585 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_13d4f180-d905-40f7-aebd-814b3f4818d8/bin-2019/utaipan/witness.graphml [2018-11-18 16:34:11,585 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 16:34:11,585 INFO L168 Benchmark]: Toolchain (without parser) took 336342.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 953.2 MB in the beginning and 901.8 MB in the end (delta: 51.4 MB). Peak memory consumption was 203.4 MB. Max. memory is 11.5 GB. [2018-11-18 16:34:11,586 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 16:34:11,586 INFO L168 Benchmark]: CACSL2BoogieTranslator took 152.96 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 941.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-11-18 16:34:11,586 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.12 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 16:34:11,586 INFO L168 Benchmark]: Boogie Preprocessor took 18.01 ms. Allocated memory is still 1.0 GB. Free memory is still 935.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:34:11,587 INFO L168 Benchmark]: RCFGBuilder took 640.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 935.8 MB in the beginning and 1.1 GB in the end (delta: -191.3 MB). Peak memory consumption was 21.4 MB. Max. memory is 11.5 GB. [2018-11-18 16:34:11,587 INFO L168 Benchmark]: TraceAbstraction took 335481.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 901.8 MB in the end (delta: 225.3 MB). Peak memory consumption was 225.3 MB. Max. memory is 11.5 GB. [2018-11-18 16:34:11,587 INFO L168 Benchmark]: Witness Printer took 33.71 ms. Allocated memory is still 1.2 GB. Free memory is still 901.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:34:11,589 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 152.96 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 941.1 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 13.12 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.01 ms. Allocated memory is still 1.0 GB. Free memory is still 935.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 640.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 935.8 MB in the beginning and 1.1 GB in the end (delta: -191.3 MB). Peak memory consumption was 21.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 335481.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 901.8 MB in the end (delta: 225.3 MB). Peak memory consumption was 225.3 MB. Max. memory is 11.5 GB. * Witness Printer took 33.71 ms. Allocated memory is still 1.2 GB. Free memory is still 901.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant [2018-11-18 16:34:11,593 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 16:34:11,593 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 16:34:11,593 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 16:34:11,593 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 16:34:11,594 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 16:34:11,594 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 16:34:11,594 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 16:34:11,594 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ~fp.leq~DOUBLE(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~fp.add~FLOAT(~roundNearestTiesToEven, z, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0))), ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0E8)) && ~fp.geq~FLOAT(z, ~Pluszero~LONGDOUBLE()) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 335.4s OverallTime, 4 OverallIterations, 5 TraceHistogramMax, 154.1s AutomataDifference, 0.0s DeadEndRemovalTime, 75.5s HoareAnnotationTime, HoareTripleCheckerStatistics: 54 SDtfs, 5 SDslu, 145 SDs, 0 SdLazy, 86 SolverSat, 19 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 28.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 157 GetRequests, 107 SyntacticMatches, 9 SemanticMatches, 41 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 224.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 19 NumberOfFragments, 55 HoareAnnotationTreeSize, 11 FomulaSimplifications, 51 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 430 FormulaSimplificationTreeSizeReductionInter, 75.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 6.0s SatisfiabilityAnalysisTime, 99.5s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 139 ConstructedInterpolants, 0 QuantifiedInterpolants, 28405 SizeOfPredicates, 11 NumberOfNonLiveVariables, 175 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 4/88 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...