./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/addsub_float_inexact_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_dfa981fb-623c-40db-874f-d781530c4a5f/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_dfa981fb-623c-40db-874f-d781530c4a5f/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_dfa981fb-623c-40db-874f-d781530c4a5f/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_dfa981fb-623c-40db-874f-d781530c4a5f/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/addsub_float_inexact_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_dfa981fb-623c-40db-874f-d781530c4a5f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_dfa981fb-623c-40db-874f-d781530c4a5f/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 a9ad6ad46925d70ccfe8113c6806757723d44310 .............................................................................................................................................................................................................................................................................................................................................................................................................................. 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_dfa981fb-623c-40db-874f-d781530c4a5f/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_dfa981fb-623c-40db-874f-d781530c4a5f/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_dfa981fb-623c-40db-874f-d781530c4a5f/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_dfa981fb-623c-40db-874f-d781530c4a5f/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/addsub_float_inexact_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_dfa981fb-623c-40db-874f-d781530c4a5f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_dfa981fb-623c-40db-874f-d781530c4a5f/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 a9ad6ad46925d70ccfe8113c6806757723d44310 ....................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 13:28:57,323 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 13:28:57,324 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 13:28:57,331 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 13:28:57,331 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 13:28:57,332 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 13:28:57,333 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 13:28:57,334 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 13:28:57,335 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 13:28:57,335 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 13:28:57,336 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 13:28:57,336 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 13:28:57,337 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 13:28:57,338 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 13:28:57,339 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 13:28:57,340 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 13:28:57,340 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 13:28:57,341 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 13:28:57,343 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 13:28:57,344 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 13:28:57,344 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 13:28:57,345 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 13:28:57,347 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 13:28:57,347 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 13:28:57,347 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 13:28:57,348 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 13:28:57,348 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 13:28:57,349 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 13:28:57,349 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 13:28:57,351 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 13:28:57,351 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 13:28:57,351 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 13:28:57,351 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 13:28:57,352 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 13:28:57,352 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 13:28:57,353 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 13:28:57,353 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_dfa981fb-623c-40db-874f-d781530c4a5f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-23 13:28:57,363 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 13:28:57,363 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 13:28:57,363 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 13:28:57,363 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 13:28:57,364 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 13:28:57,364 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 13:28:57,364 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 13:28:57,364 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 13:28:57,364 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 13:28:57,364 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 13:28:57,364 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 13:28:57,364 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 13:28:57,364 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 13:28:57,365 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 13:28:57,365 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 13:28:57,365 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 13:28:57,365 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 13:28:57,365 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 13:28:57,365 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 13:28:57,366 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 13:28:57,367 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 13:28:57,367 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 13:28:57,367 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 13:28:57,367 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 13:28:57,367 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 13:28:57,367 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 13:28:57,367 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 13:28:57,367 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 13:28:57,367 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 13:28:57,367 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 13:28:57,368 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 13:28:57,368 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 13:28:57,368 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 13:28:57,368 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 13:28:57,368 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 13:28:57,368 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 13:28:57,368 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 13:28:57,368 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_dfa981fb-623c-40db-874f-d781530c4a5f/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 -> a9ad6ad46925d70ccfe8113c6806757723d44310 [2018-11-23 13:28:57,392 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 13:28:57,400 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 13:28:57,403 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 13:28:57,404 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 13:28:57,404 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 13:28:57,405 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_dfa981fb-623c-40db-874f-d781530c4a5f/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/addsub_float_inexact_true-unreach-call_true-termination.c [2018-11-23 13:28:57,442 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_dfa981fb-623c-40db-874f-d781530c4a5f/bin-2019/utaipan/data/83318d97c/8263ffa04fcf4246b6ddae44af838f14/FLAG92cf81c51 [2018-11-23 13:28:57,772 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 13:28:57,772 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_dfa981fb-623c-40db-874f-d781530c4a5f/sv-benchmarks/c/float-benchs/addsub_float_inexact_true-unreach-call_true-termination.c [2018-11-23 13:28:57,777 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_dfa981fb-623c-40db-874f-d781530c4a5f/bin-2019/utaipan/data/83318d97c/8263ffa04fcf4246b6ddae44af838f14/FLAG92cf81c51 [2018-11-23 13:28:58,207 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_dfa981fb-623c-40db-874f-d781530c4a5f/bin-2019/utaipan/data/83318d97c/8263ffa04fcf4246b6ddae44af838f14 [2018-11-23 13:28:58,209 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 13:28:58,211 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 13:28:58,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 13:28:58,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 13:28:58,214 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 13:28:58,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:28:58" (1/1) ... [2018-11-23 13:28:58,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e42f8a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:58, skipping insertion in model container [2018-11-23 13:28:58,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:28:58" (1/1) ... [2018-11-23 13:28:58,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 13:28:58,235 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 13:28:58,342 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 13:28:58,344 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 13:28:58,353 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 13:28:58,361 INFO L195 MainTranslator]: Completed translation [2018-11-23 13:28:58,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:58 WrapperNode [2018-11-23 13:28:58,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 13:28:58,362 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 13:28:58,362 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 13:28:58,362 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 13:28:58,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:58" (1/1) ... [2018-11-23 13:28:58,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:58" (1/1) ... [2018-11-23 13:28:58,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 13:28:58,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 13:28:58,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 13:28:58,375 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 13:28:58,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:58" (1/1) ... [2018-11-23 13:28:58,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:58" (1/1) ... [2018-11-23 13:28:58,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:58" (1/1) ... [2018-11-23 13:28:58,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:58" (1/1) ... [2018-11-23 13:28:58,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:58" (1/1) ... [2018-11-23 13:28:58,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:58" (1/1) ... [2018-11-23 13:28:58,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:58" (1/1) ... [2018-11-23 13:28:58,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 13:28:58,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 13:28:58,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 13:28:58,387 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 13:28:58,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dfa981fb-623c-40db-874f-d781530c4a5f/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 [2018-11-23 13:28:58,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 13:28:58,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 13:28:58,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 13:28:58,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 13:28:58,457 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 13:28:58,457 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 13:28:58,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-23 13:28:58,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-23 13:28:58,539 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 13:28:58,539 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-23 13:28:58,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:28:58 BoogieIcfgContainer [2018-11-23 13:28:58,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 13:28:58,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 13:28:58,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 13:28:58,542 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 13:28:58,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:28:58" (1/3) ... [2018-11-23 13:28:58,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1992537f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:28:58, skipping insertion in model container [2018-11-23 13:28:58,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:58" (2/3) ... [2018-11-23 13:28:58,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1992537f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:28:58, skipping insertion in model container [2018-11-23 13:28:58,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:28:58" (3/3) ... [2018-11-23 13:28:58,544 INFO L112 eAbstractionObserver]: Analyzing ICFG addsub_float_inexact_true-unreach-call_true-termination.c [2018-11-23 13:28:58,550 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 13:28:58,554 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 13:28:58,564 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 13:28:58,584 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 13:28:58,584 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 13:28:58,584 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 13:28:58,584 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 13:28:58,584 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 13:28:58,584 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 13:28:58,584 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 13:28:58,585 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 13:28:58,597 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-11-23 13:28:58,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-23 13:28:58,601 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:28:58,602 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:28:58,604 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:28:58,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:28:58,608 INFO L82 PathProgramCache]: Analyzing trace with hash 997393992, now seen corresponding path program 1 times [2018-11-23 13:28:58,610 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 13:28:58,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:28:58,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:28:58,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:28:58,640 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 13:28:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:28:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:28:58,679 INFO L469 BasicCegarLoop]: Counterexample might be feasible ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator [?] CALL call ULTIMATE.init(); [?] assume true; [?] RET #20#return; [?] CALL call #t~ret0 := main(); [?] havoc ~x~0;havoc ~y~0;havoc ~z~0;havoc ~r~0;~x~0 := 1.0E8;~y~0 := ~someBinaryArithmeticFLOAToperation(~x~0, 1.0);~z~0 := ~someBinaryArithmeticFLOAToperation(~x~0, 1.0);~r~0 := ~someBinaryArithmeticFLOAToperation(~y~0, ~z~0); VAL [main_~x~0=100000000.0] [?] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~r~0, 0.0) then 1 else 0)); VAL [|__VERIFIER_assert_#in~cond|=0] [?] ~cond := #in~cond; VAL [__VERIFIER_assert_~cond=0, |__VERIFIER_assert_#in~cond|=0] [?] assume 0 == ~cond; VAL [__VERIFIER_assert_~cond=0, |__VERIFIER_assert_#in~cond|=0] [?] assume !false; VAL [__VERIFIER_assert_~cond=0, |__VERIFIER_assert_#in~cond|=0] [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret0 := main(); [L8] havoc ~x~0; [L8] havoc ~y~0; [L8] havoc ~z~0; [L8] havoc ~r~0; [L10] ~x~0 := 1.0E8; [L11] ~y~0 := ~someBinaryArithmeticFLOAToperation(~x~0, 1.0); [L12] ~z~0 := ~someBinaryArithmeticFLOAToperation(~x~0, 1.0); [L13] ~r~0 := ~someBinaryArithmeticFLOAToperation(~y~0, ~z~0); VAL [~x~0=1.0E8] [L14] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~r~0, 0.0) then 1 else 0)); VAL [#in~cond=0] [L4] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L4] assume 0 == ~cond; VAL [#in~cond=0, ~cond=0] [L4] assert false; VAL [#in~cond=0, ~cond=0] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.preprocessor.BoogiePreprocessorBacktranslator [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret0 := main(); [L8] havoc ~x~0; [L8] havoc ~y~0; [L8] havoc ~z~0; [L8] havoc ~r~0; [L10] ~x~0 := 1.0E8; [L11] ~y~0 := ~someBinaryArithmeticFLOAToperation(~x~0, 1.0); [L12] ~z~0 := ~someBinaryArithmeticFLOAToperation(~x~0, 1.0); [L13] ~r~0 := ~someBinaryArithmeticFLOAToperation(~y~0, ~z~0); VAL [~x~0=1.0E8] [L14] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~r~0, 0.0) then 1 else 0)); VAL [#in~cond=0] [L4] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L4] assume 0 == ~cond; VAL [#in~cond=0, ~cond=0] [L4] assert false; VAL [#in~cond=0, ~cond=0] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret0 := main(); [L8] havoc ~x~0; [L8] havoc ~y~0; [L8] havoc ~z~0; [L8] havoc ~r~0; [L10] ~x~0 := 1.0E8; [L11] ~y~0 := ~someBinaryArithmeticFLOAToperation(~x~0, 1.0); [L12] ~z~0 := ~someBinaryArithmeticFLOAToperation(~x~0, 1.0); [L13] ~r~0 := ~someBinaryArithmeticFLOAToperation(~y~0, ~z~0); VAL [~x~0=1.0E8] [L14] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~r~0, 0.0) then 1 else 0)); VAL [#in~cond=0] [L4] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L4] COND TRUE 0 == ~cond VAL [#in~cond=0, ~cond=0] [L4] assert false; VAL [#in~cond=0, ~cond=0] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret0 := main(); [L8] havoc ~x~0; [L8] havoc ~y~0; [L8] havoc ~z~0; [L8] havoc ~r~0; [L10] ~x~0 := 1.0E8; [L11] ~y~0 := ~someBinaryArithmeticFLOAToperation(~x~0, 1.0); [L12] ~z~0 := ~someBinaryArithmeticFLOAToperation(~x~0, 1.0); [L13] ~r~0 := ~someBinaryArithmeticFLOAToperation(~y~0, ~z~0); VAL [~x~0=1.0E8] [L14] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~r~0, 0.0) then 1 else 0)); VAL [#in~cond=0] [L4] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L4] COND TRUE 0 == ~cond VAL [#in~cond=0, ~cond=0] [L4] assert false; VAL [#in~cond=0, ~cond=0] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret0 := main(); [L8] havoc ~x~0; [L8] havoc ~y~0; [L8] havoc ~z~0; [L8] havoc ~r~0; [L10] ~x~0 := 1.0E8; [L11] ~y~0 := ~someBinaryArithmeticFLOAToperation(~x~0, 1.0); [L12] ~z~0 := ~someBinaryArithmeticFLOAToperation(~x~0, 1.0); [L13] ~r~0 := ~someBinaryArithmeticFLOAToperation(~y~0, ~z~0); VAL [~x~0=1.0E8] [L14] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~r~0, 0.0) then 1 else 0)); VAL [#in~cond=0] [L4] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L4] COND TRUE 0 == ~cond VAL [#in~cond=0, ~cond=0] [L4] assert false; VAL [#in~cond=0, ~cond=0] ----- ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret0 := main(); [L8] havoc ~x~0; [L8] havoc ~y~0; [L8] havoc ~z~0; [L8] havoc ~r~0; [L10] ~x~0 := 1.0E8; [L11] ~y~0 := ~someBinaryArithmeticFLOAToperation(~x~0, 1.0); [L12] ~z~0 := ~someBinaryArithmeticFLOAToperation(~x~0, 1.0); [L13] ~r~0 := ~someBinaryArithmeticFLOAToperation(~y~0, ~z~0); VAL [~x~0=1.0E8] [L14] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~r~0, 0.0) then 1 else 0)); VAL [#in~cond=0] [L4] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L4] COND TRUE 0 == ~cond VAL [#in~cond=0, ~cond=0] [L4] assert false; VAL [#in~cond=0, ~cond=0] [L8] float x, y, z, r; [L10] x = 1e8f [L11] y = x + 1.f [L12] z = x - 1.f [L13] r = y - z VAL [x=100000000] [L14] CALL __VERIFIER_assert(r == 0.f) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L4] __VERIFIER_error() VAL [\old(cond)=0, cond=0] ----- [2018-11-23 13:28:58,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:28:58 BoogieIcfgContainer [2018-11-23 13:28:58,698 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 13:28:58,698 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 13:28:58,698 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 13:28:58,698 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 13:28:58,699 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:28:58" (3/4) ... [2018-11-23 13:28:58,701 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-23 13:28:58,701 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 13:28:58,702 INFO L168 Benchmark]: Toolchain (without parser) took 491.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 959.1 MB in the beginning and 1.1 GB in the end (delta: -167.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 13:28:58,703 INFO L168 Benchmark]: CDTParser took 0.13 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. [2018-11-23 13:28:58,703 INFO L168 Benchmark]: CACSL2BoogieTranslator took 150.56 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. [2018-11-23 13:28:58,704 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.62 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. [2018-11-23 13:28:58,704 INFO L168 Benchmark]: Boogie Preprocessor took 11.64 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. [2018-11-23 13:28:58,705 INFO L168 Benchmark]: RCFGBuilder took 152.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -194.0 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-23 13:28:58,706 INFO L168 Benchmark]: TraceAbstraction took 157.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. [2018-11-23 13:28:58,706 INFO L168 Benchmark]: Witness Printer took 3.09 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. [2018-11-23 13:28:58,709 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 150.56 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 12.62 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 11.64 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 152.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -194.0 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 157.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. * Witness Printer took 3.09 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: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 11. Possible FailurePath: [L8] float x, y, z, r; [L10] x = 1e8f [L11] y = x + 1.f [L12] z = x - 1.f [L13] r = y - z VAL [x=100000000] [L14] CALL __VERIFIER_assert(r == 0.f) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L4] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-aa41828 [2018-11-23 13:29:00,177 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 13:29:00,178 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 13:29:00,186 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 13:29:00,187 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 13:29:00,187 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 13:29:00,188 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 13:29:00,190 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 13:29:00,191 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 13:29:00,191 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 13:29:00,192 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 13:29:00,192 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 13:29:00,193 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 13:29:00,194 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 13:29:00,195 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 13:29:00,196 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 13:29:00,196 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 13:29:00,197 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 13:29:00,199 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 13:29:00,200 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 13:29:00,201 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 13:29:00,202 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 13:29:00,204 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 13:29:00,204 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 13:29:00,204 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 13:29:00,205 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 13:29:00,206 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 13:29:00,207 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 13:29:00,208 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 13:29:00,209 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 13:29:00,209 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 13:29:00,209 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 13:29:00,209 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 13:29:00,210 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 13:29:00,211 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 13:29:00,212 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 13:29:00,212 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_dfa981fb-623c-40db-874f-d781530c4a5f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-23 13:29:00,222 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 13:29:00,222 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 13:29:00,223 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 13:29:00,223 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 13:29:00,223 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 13:29:00,223 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 13:29:00,223 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 13:29:00,224 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 13:29:00,224 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 13:29:00,224 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 13:29:00,224 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 13:29:00,225 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 13:29:00,225 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 13:29:00,225 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 13:29:00,225 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 13:29:00,225 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 13:29:00,225 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 13:29:00,225 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-23 13:29:00,225 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-23 13:29:00,226 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 13:29:00,226 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 13:29:00,228 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 13:29:00,228 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 13:29:00,228 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 13:29:00,228 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 13:29:00,228 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 13:29:00,228 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 13:29:00,228 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 13:29:00,229 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 13:29:00,229 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 13:29:00,229 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 13:29:00,229 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-23 13:29:00,229 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 13:29:00,229 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-23 13:29:00,229 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-23 13:29:00,230 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_dfa981fb-623c-40db-874f-d781530c4a5f/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 -> a9ad6ad46925d70ccfe8113c6806757723d44310 [2018-11-23 13:29:00,261 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 13:29:00,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 13:29:00,273 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 13:29:00,274 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 13:29:00,274 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 13:29:00,275 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_dfa981fb-623c-40db-874f-d781530c4a5f/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/addsub_float_inexact_true-unreach-call_true-termination.c [2018-11-23 13:29:00,315 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_dfa981fb-623c-40db-874f-d781530c4a5f/bin-2019/utaipan/data/0a9424a22/8708f6fe01804853baf1a8b2a65f0704/FLAG665306aed [2018-11-23 13:29:00,645 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 13:29:00,645 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_dfa981fb-623c-40db-874f-d781530c4a5f/sv-benchmarks/c/float-benchs/addsub_float_inexact_true-unreach-call_true-termination.c [2018-11-23 13:29:00,649 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_dfa981fb-623c-40db-874f-d781530c4a5f/bin-2019/utaipan/data/0a9424a22/8708f6fe01804853baf1a8b2a65f0704/FLAG665306aed [2018-11-23 13:29:01,087 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_dfa981fb-623c-40db-874f-d781530c4a5f/bin-2019/utaipan/data/0a9424a22/8708f6fe01804853baf1a8b2a65f0704 [2018-11-23 13:29:01,089 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 13:29:01,090 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 13:29:01,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 13:29:01,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 13:29:01,093 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 13:29:01,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:29:01" (1/1) ... [2018-11-23 13:29:01,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b44462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:29:01, skipping insertion in model container [2018-11-23 13:29:01,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:29:01" (1/1) ... [2018-11-23 13:29:01,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 13:29:01,114 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 13:29:01,230 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 13:29:01,235 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 13:29:01,248 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 13:29:01,261 INFO L195 MainTranslator]: Completed translation [2018-11-23 13:29:01,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:29:01 WrapperNode [2018-11-23 13:29:01,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 13:29:01,262 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 13:29:01,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 13:29:01,262 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 13:29:01,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:29:01" (1/1) ... [2018-11-23 13:29:01,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:29:01" (1/1) ... [2018-11-23 13:29:01,281 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 13:29:01,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 13:29:01,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 13:29:01,281 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 13:29:01,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:29:01" (1/1) ... [2018-11-23 13:29:01,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:29:01" (1/1) ... [2018-11-23 13:29:01,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:29:01" (1/1) ... [2018-11-23 13:29:01,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:29:01" (1/1) ... [2018-11-23 13:29:01,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:29:01" (1/1) ... [2018-11-23 13:29:01,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:29:01" (1/1) ... [2018-11-23 13:29:01,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:29:01" (1/1) ... [2018-11-23 13:29:01,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 13:29:01,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 13:29:01,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 13:29:01,301 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 13:29:01,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:29:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dfa981fb-623c-40db-874f-d781530c4a5f/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 [2018-11-23 13:29:01,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 13:29:01,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 13:29:01,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 13:29:01,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 13:29:01,401 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 13:29:01,401 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 13:29:01,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-23 13:29:01,401 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-23 13:29:01,501 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 13:29:01,502 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-23 13:29:01,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:29:01 BoogieIcfgContainer [2018-11-23 13:29:01,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 13:29:01,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 13:29:01,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 13:29:01,505 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 13:29:01,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:29:01" (1/3) ... [2018-11-23 13:29:01,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eea6d18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:29:01, skipping insertion in model container [2018-11-23 13:29:01,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:29:01" (2/3) ... [2018-11-23 13:29:01,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eea6d18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:29:01, skipping insertion in model container [2018-11-23 13:29:01,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:29:01" (3/3) ... [2018-11-23 13:29:01,508 INFO L112 eAbstractionObserver]: Analyzing ICFG addsub_float_inexact_true-unreach-call_true-termination.c [2018-11-23 13:29:01,516 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 13:29:01,521 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 13:29:01,530 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 13:29:01,548 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 13:29:01,548 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 13:29:01,548 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 13:29:01,549 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 13:29:01,549 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 13:29:01,549 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 13:29:01,549 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 13:29:01,549 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 13:29:01,549 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 13:29:01,563 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-11-23 13:29:01,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-23 13:29:01,568 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:29:01,569 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:29:01,570 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:29:01,573 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:29:01,574 INFO L82 PathProgramCache]: Analyzing trace with hash 997393992, now seen corresponding path program 1 times [2018-11-23 13:29:01,576 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-23 13:29:01,576 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dfa981fb-623c-40db-874f-d781530c4a5f/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 [2018-11-23 13:29:01,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:29:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:29:01,669 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:29:01,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:29:01,739 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 13:29:01,753 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:29:01,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 13:29:01,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 13:29:01,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 13:29:01,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 13:29:01,766 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2018-11-23 13:29:01,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:29:01,813 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2018-11-23 13:29:01,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 13:29:01,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2018-11-23 13:29:01,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:29:01,821 INFO L225 Difference]: With dead ends: 24 [2018-11-23 13:29:01,821 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 13:29:01,823 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 13:29:01,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 13:29:01,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 13:29:01,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 13:29:01,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 13:29:01,842 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2018-11-23 13:29:01,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:29:01,842 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 13:29:01,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 13:29:01,842 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 13:29:01,843 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 13:29:01,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 13:29:01,885 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 13:29:01,886 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 13:29:01,886 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 13:29:01,886 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 13:29:01,886 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 13:29:01,886 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 13:29:01,886 INFO L444 ceAbstractionStarter]: At program point L14(line 14) the Hoare annotation is: (= (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 100000000.0)) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 .cse1) (fp.sub roundNearestTiesToEven .cse0 .cse1))) main_~r~0) [2018-11-23 13:29:01,886 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 6 16) the Hoare annotation is: true [2018-11-23 13:29:01,887 INFO L448 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2018-11-23 13:29:01,887 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 6 16) no Hoare annotation was computed. [2018-11-23 13:29:01,887 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 6 16) no Hoare annotation was computed. [2018-11-23 13:29:01,887 INFO L448 ceAbstractionStarter]: For program point L4-3(line 4) no Hoare annotation was computed. [2018-11-23 13:29:01,887 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 4) the Hoare annotation is: true [2018-11-23 13:29:01,887 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 4) no Hoare annotation was computed. [2018-11-23 13:29:01,887 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2018-11-23 13:29:01,887 INFO L448 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-11-23 13:29:01,887 INFO L448 ceAbstractionStarter]: For program point L4-1(line 4) no Hoare annotation was computed. [2018-11-23 13:29:01,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:29:01 BoogieIcfgContainer [2018-11-23 13:29:01,889 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 13:29:01,890 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 13:29:01,890 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 13:29:01,890 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 13:29:01,890 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:29:01" (3/4) ... [2018-11-23 13:29:01,892 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 13:29:01,897 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 13:29:01,897 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 13:29:01,897 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-23 13:29:01,900 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-23 13:29:01,900 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-23 13:29:01,900 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 13:29:01,900 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 13:29:01,925 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_dfa981fb-623c-40db-874f-d781530c4a5f/bin-2019/utaipan/witness.graphml [2018-11-23 13:29:01,925 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 13:29:01,926 INFO L168 Benchmark]: Toolchain (without parser) took 836.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 949.7 MB in the beginning and 1.1 GB in the end (delta: -154.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 13:29:01,927 INFO L168 Benchmark]: CDTParser took 0.17 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. [2018-11-23 13:29:01,927 INFO L168 Benchmark]: CACSL2BoogieTranslator took 171.20 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 13:29:01,928 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.98 ms. Allocated memory is still 1.0 GB. Free memory was 939.0 MB in the beginning and 933.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-23 13:29:01,928 INFO L168 Benchmark]: Boogie Preprocessor took 18.88 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 13:29:01,928 INFO L168 Benchmark]: RCFGBuilder took 201.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -207.4 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2018-11-23 13:29:01,929 INFO L168 Benchmark]: TraceAbstraction took 386.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.6 MB). Peak memory consumption was 30.6 MB. Max. memory is 11.5 GB. [2018-11-23 13:29:01,929 INFO L168 Benchmark]: Witness Printer took 35.73 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. [2018-11-23 13:29:01,930 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 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 171.20 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.98 ms. Allocated memory is still 1.0 GB. Free memory was 939.0 MB in the beginning and 933.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.88 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 201.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -207.4 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 386.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.6 MB). Peak memory consumption was 30.6 MB. Max. memory is 11.5 GB. * Witness Printer took 35.73 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: - PositiveResult [Line: 4]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. SAFE Result, 0.3s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11 SDtfs, 7 SDslu, 27 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 25 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 280 SizeOfPredicates, 5 NumberOfNonLiveVariables, 20 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...