./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1032a_true-unreach-call.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_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1032a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/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 9a3696439220bbea1d6ed5ed3b22aa10206af5de ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1032a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/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 9a3696439220bbea1d6ed5ed3b22aa10206af5de .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-22 21:47:59,332 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 21:47:59,334 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 21:47:59,342 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 21:47:59,342 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 21:47:59,343 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 21:47:59,343 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 21:47:59,344 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 21:47:59,345 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 21:47:59,345 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 21:47:59,346 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 21:47:59,346 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 21:47:59,347 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 21:47:59,347 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 21:47:59,348 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 21:47:59,349 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 21:47:59,349 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 21:47:59,350 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 21:47:59,352 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 21:47:59,352 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 21:47:59,353 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 21:47:59,353 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 21:47:59,354 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 21:47:59,355 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 21:47:59,355 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 21:47:59,355 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 21:47:59,356 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 21:47:59,356 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 21:47:59,356 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 21:47:59,357 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 21:47:59,357 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 21:47:59,357 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 21:47:59,357 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 21:47:59,357 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 21:47:59,358 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 21:47:59,359 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 21:47:59,359 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-22 21:47:59,367 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 21:47:59,367 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 21:47:59,368 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-22 21:47:59,368 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-22 21:47:59,368 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-22 21:47:59,369 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-22 21:47:59,369 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-22 21:47:59,369 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-22 21:47:59,369 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-22 21:47:59,369 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-22 21:47:59,369 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-22 21:47:59,369 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-22 21:47:59,369 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-22 21:47:59,370 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 21:47:59,370 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-22 21:47:59,370 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-22 21:47:59,370 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-22 21:47:59,370 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 21:47:59,371 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-22 21:47:59,371 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-22 21:47:59,371 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-22 21:47:59,371 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-22 21:47:59,371 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-22 21:47:59,371 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 21:47:59,371 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-22 21:47:59,372 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 21:47:59,372 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 21:47:59,372 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-22 21:47:59,372 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-22 21:47:59,372 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-22 21:47:59,372 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 21:47:59,372 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-22 21:47:59,373 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-22 21:47:59,373 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-22 21:47:59,373 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-22 21:47:59,373 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-22 21:47:59,373 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-22 21:47:59,373 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_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/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 -> 9a3696439220bbea1d6ed5ed3b22aa10206af5de [2018-11-22 21:47:59,397 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 21:47:59,406 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 21:47:59,408 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 21:47:59,409 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 21:47:59,409 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 21:47:59,410 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1032a_true-unreach-call.c [2018-11-22 21:47:59,456 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/bin-2019/utaipan/data/6a1e50716/d40ad49537c045a290566cc0648305c8/FLAGb71c7d96c [2018-11-22 21:47:59,854 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 21:47:59,855 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/sv-benchmarks/c/float-newlib/float_req_bl_1032a_true-unreach-call.c [2018-11-22 21:47:59,859 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/bin-2019/utaipan/data/6a1e50716/d40ad49537c045a290566cc0648305c8/FLAGb71c7d96c [2018-11-22 21:47:59,867 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/bin-2019/utaipan/data/6a1e50716/d40ad49537c045a290566cc0648305c8 [2018-11-22 21:47:59,869 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 21:47:59,870 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-22 21:47:59,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 21:47:59,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 21:47:59,872 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 21:47:59,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:47:59" (1/1) ... [2018-11-22 21:47:59,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ed7bee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:59, skipping insertion in model container [2018-11-22 21:47:59,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:47:59" (1/1) ... [2018-11-22 21:47:59,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 21:47:59,893 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 21:48:00,004 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 21:48:00,005 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 21:48:00,020 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 21:48:00,033 INFO L195 MainTranslator]: Completed translation [2018-11-22 21:48:00,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:48:00 WrapperNode [2018-11-22 21:48:00,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 21:48:00,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-22 21:48:00,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-22 21:48:00,034 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-22 21:48:00,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:48:00" (1/1) ... [2018-11-22 21:48:00,051 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:48:00" (1/1) ... [2018-11-22 21:48:00,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-22 21:48:00,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 21:48:00,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 21:48:00,058 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 21:48:00,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:48:00" (1/1) ... [2018-11-22 21:48:00,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:48:00" (1/1) ... [2018-11-22 21:48:00,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:48:00" (1/1) ... [2018-11-22 21:48:00,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:48:00" (1/1) ... [2018-11-22 21:48:00,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:48:00" (1/1) ... [2018-11-22 21:48:00,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:48:00" (1/1) ... [2018-11-22 21:48:00,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:48:00" (1/1) ... [2018-11-22 21:48:00,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 21:48:00,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 21:48:00,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 21:48:00,125 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 21:48:00,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:48:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/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 [2018-11-22 21:48:00,169 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-22 21:48:00,169 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-22 21:48:00,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-22 21:48:00,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-22 21:48:00,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-22 21:48:00,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-22 21:48:00,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-22 21:48:00,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-22 21:48:00,170 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2018-11-22 21:48:00,170 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2018-11-22 21:48:00,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 21:48:00,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 21:48:00,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-22 21:48:00,171 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-11-22 21:48:00,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-11-22 21:48:00,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-22 21:48:00,399 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 21:48:00,399 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-22 21:48:00,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:48:00 BoogieIcfgContainer [2018-11-22 21:48:00,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 21:48:00,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-22 21:48:00,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-22 21:48:00,402 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-22 21:48:00,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:47:59" (1/3) ... [2018-11-22 21:48:00,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@624c4c7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:48:00, skipping insertion in model container [2018-11-22 21:48:00,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:48:00" (2/3) ... [2018-11-22 21:48:00,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@624c4c7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:48:00, skipping insertion in model container [2018-11-22 21:48:00,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:48:00" (3/3) ... [2018-11-22 21:48:00,406 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032a_true-unreach-call.c [2018-11-22 21:48:00,415 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-22 21:48:00,422 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-22 21:48:00,436 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-22 21:48:00,462 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-22 21:48:00,462 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-22 21:48:00,462 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-22 21:48:00,462 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-22 21:48:00,462 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-22 21:48:00,462 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-22 21:48:00,462 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-22 21:48:00,463 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-22 21:48:00,478 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2018-11-22 21:48:00,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-22 21:48:00,483 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:48:00,484 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:48:00,486 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:48:00,489 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:48:00,490 INFO L82 PathProgramCache]: Analyzing trace with hash 564888569, now seen corresponding path program 1 times [2018-11-22 21:48:00,491 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 21:48:00,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:48:00,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:48:00,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:48:00,522 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 21:48:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:48:00,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:48:00,581 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 21:48:00,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-22 21:48:00,581 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 21:48:00,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-22 21:48:00,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-22 21:48:00,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-22 21:48:00,594 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2018-11-22 21:48:00,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:48:00,610 INFO L93 Difference]: Finished difference Result 68 states and 93 transitions. [2018-11-22 21:48:00,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-22 21:48:00,612 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-11-22 21:48:00,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 21:48:00,619 INFO L225 Difference]: With dead ends: 68 [2018-11-22 21:48:00,619 INFO L226 Difference]: Without dead ends: 34 [2018-11-22 21:48:00,622 INFO L631 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 [2018-11-22 21:48:00,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-22 21:48:00,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-11-22 21:48:00,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-22 21:48:00,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2018-11-22 21:48:00,649 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 18 [2018-11-22 21:48:00,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 21:48:00,649 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2018-11-22 21:48:00,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-22 21:48:00,649 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2018-11-22 21:48:00,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-22 21:48:00,650 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:48:00,650 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:48:00,651 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:48:00,651 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:48:00,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1333163618, now seen corresponding path program 1 times [2018-11-22 21:48:00,651 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 21:48:00,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:48:00,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:48:00,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:48:00,652 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 21:48:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:48:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:48:00,718 INFO L469 BasicCegarLoop]: Counterexample might be feasible ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator [?] CALL call ULTIMATE.init(); VAL [|#NULL.base|=11, |#NULL.offset|=5, |old(#NULL.base)|=11, |old(#NULL.offset)|=5] [?] #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; VAL [|#NULL.base|=0, |#NULL.offset|=0, |old(#NULL.base)|=11, |old(#NULL.offset)|=5] [?] assume true; VAL [|#NULL.base|=0, |#NULL.offset|=0, |old(#NULL.base)|=11, |old(#NULL.offset)|=5] [?] RET #91#return; VAL [|#NULL.base|=0, |#NULL.offset|=0] [?] CALL call #t~ret9 := main(); VAL [|#NULL.base|=0, |#NULL.offset|=0] [?] ~x~0 := 0.0; VAL [main_~x~0=0.0, |#NULL.base|=0, |#NULL.offset|=0] [?] CALL call #t~ret6 := round_float(~x~0); VAL [|#NULL.base|=0, |#NULL.offset|=0, |round_float_#in~x|=0.0] [?] ~x := #in~x;havoc ~w~0;havoc ~exponent_less_127~0; VAL [round_float_~x=0.0, |#NULL.base|=0, |#NULL.offset|=0, |round_float_#in~x|=0.0] [?] call ~#gf_u~0.base, ~#gf_u~0.offset := #Ultimate.alloc(4);call write~real(~x, ~#gf_u~0.base, ~#gf_u~0.offset, 4);call #t~mem0 := read~int(~#gf_u~0.base, ~#gf_u~0.offset, 4);~w~0 := #t~mem0;call write~real(#t~union1, ~#gf_u~0.base, ~#gf_u~0.offset, 4);havoc #t~union1;havoc #t~mem0;call ULTIMATE.dealloc(~#gf_u~0.base, ~#gf_u~0.offset);havoc ~#gf_u~0.base, ~#gf_u~0.offset; VAL [round_float_~w~0=9, round_float_~x=0.0, |#NULL.base|=0, |#NULL.offset|=0, |round_float_#in~x|=0.0] [?] goto; VAL [round_float_~w~0=9, round_float_~x=0.0, |#NULL.base|=0, |#NULL.offset|=0, |round_float_#in~x|=0.0] [?] ~exponent_less_127~0 := (if ~bitwiseAnd(~w~0, 2139095040) / 8388608 % 4294967296 % 4294967296 <= 2147483647 then ~bitwiseAnd(~w~0, 2139095040) / 8388608 % 4294967296 % 4294967296 else ~bitwiseAnd(~w~0, 2139095040) / 8388608 % 4294967296 % 4294967296 - 4294967296) - 127; VAL [round_float_~exponent_less_127~0=128, round_float_~w~0=9, round_float_~x=0.0, |#NULL.base|=0, |#NULL.offset|=0, |round_float_#in~x|=0.0] [?] assume !(~exponent_less_127~0 < 23); VAL [round_float_~exponent_less_127~0=128, round_float_~w~0=9, round_float_~x=0.0, |#NULL.base|=0, |#NULL.offset|=0, |round_float_#in~x|=0.0] [?] assume 128 == ~exponent_less_127~0;#res := ~someBinaryArithmeticFLOAToperation(~x, ~x); VAL [round_float_~exponent_less_127~0=128, round_float_~w~0=9, round_float_~x=0.0, |#NULL.base|=0, |#NULL.offset|=0, |round_float_#in~x|=0.0] [?] assume true; VAL [round_float_~exponent_less_127~0=128, round_float_~w~0=9, round_float_~x=0.0, |#NULL.base|=0, |#NULL.offset|=0, |round_float_#in~x|=0.0] [?] RET #95#return; VAL [main_~x~0=0.0, |#NULL.base|=0, |#NULL.offset|=0, |main_#t~ret6|=7.0] [?] ~res~0 := #t~ret6;havoc #t~ret6;#t~short8 := ~someBinaryFLOATComparisonOperation(~res~0, 0.0); VAL [main_~res~0=7.0, main_~x~0=0.0, |#NULL.base|=0, |#NULL.offset|=0, |main_#t~short8|=false] [?] assume !#t~short8; VAL [main_~res~0=7.0, main_~x~0=0.0, |#NULL.base|=0, |#NULL.offset|=0, |main_#t~short8|=false] [?] assume !#t~short8;havoc #t~short8;havoc #t~ret7; VAL [main_~res~0=7.0, main_~x~0=0.0, |#NULL.base|=0, |#NULL.offset|=0] [?] assume !false; VAL [main_~res~0=7.0, main_~x~0=0.0, |#NULL.base|=0, |#NULL.offset|=0] [?] CALL call ULTIMATE.init(); VAL [#NULL.base=11, #NULL.offset=5, old(#NULL.base)=11, old(#NULL.offset)=5] [?] #NULL.base, #NULL.offset := 0, 0; [?] #valid := #valid[0 := 0]; VAL [#NULL.base=0, #NULL.offset=0, old(#NULL.base)=11, old(#NULL.offset)=5] [?] ensures true; VAL [#NULL.base=0, #NULL.offset=0, old(#NULL.base)=11, old(#NULL.offset)=5] [?] RET call ULTIMATE.init(); VAL [#NULL.base=0, #NULL.offset=0] [?] CALL call #t~ret9 := main(); VAL [#NULL.base=0, #NULL.offset=0] [L75] ~x~0 := 0.0; VAL [#NULL.base=0, #NULL.offset=0, ~x~0=0.0] [L76] CALL call #t~ret6 := round_float(~x~0); VAL [#in~x=0.0, #NULL.base=0, #NULL.offset=0] [L12-L53] ~x := #in~x; [L13] havoc ~w~0; [L15] havoc ~exponent_less_127~0; VAL [#in~x=0.0, #NULL.base=0, #NULL.offset=0, ~x=0.0] [L18] call ~#gf_u~0.base, ~#gf_u~0.offset := #Ultimate.alloc(4); [L19] call write~real(~x, ~#gf_u~0.base, ~#gf_u~0.offset, 4); [L20] call #t~mem0 := read~int(~#gf_u~0.base, ~#gf_u~0.offset, 4); [L20] ~w~0 := #t~mem0; [L20] call write~real(#t~union1, ~#gf_u~0.base, ~#gf_u~0.offset, 4); [L20] havoc #t~union1; [L20] havoc #t~mem0; [L18] call ULTIMATE.dealloc(~#gf_u~0.base, ~#gf_u~0.offset); [L18] havoc ~#gf_u~0.base, ~#gf_u~0.offset; VAL [#in~x=0.0, #NULL.base=0, #NULL.offset=0, ~w~0=9, ~x=0.0] [L23] ~exponent_less_127~0 := (if ~bitwiseAnd(~w~0, 2139095040) / 8388608 % 4294967296 % 4294967296 <= 2147483647 then ~bitwiseAnd(~w~0, 2139095040) / 8388608 % 4294967296 % 4294967296 else ~bitwiseAnd(~w~0, 2139095040) / 8388608 % 4294967296 % 4294967296 - 4294967296) - 127; VAL [#in~x=0.0, #NULL.base=0, #NULL.offset=0, ~exponent_less_127~0=128, ~w~0=9, ~x=0.0] [L25-L46] assume !(~exponent_less_127~0 < 23); VAL [#in~x=0.0, #NULL.base=0, #NULL.offset=0, ~exponent_less_127~0=128, ~w~0=9, ~x=0.0] [L41-L45] assume 128 == ~exponent_less_127~0; [L43] #res := ~someBinaryArithmeticFLOAToperation(~x, ~x); VAL [#in~x=0.0, #NULL.base=0, #NULL.offset=0, ~exponent_less_127~0=128, ~w~0=9, ~x=0.0] [L12-L53] ensures true; VAL [#in~x=0.0, #NULL.base=0, #NULL.offset=0, ~exponent_less_127~0=128, ~w~0=9, ~x=0.0] [L76] RET call #t~ret6 := round_float(~x~0); VAL [#NULL.base=0, #NULL.offset=0, #t~ret6=7.0, ~x~0=0.0] [L76] ~res~0 := #t~ret6; [L76] havoc #t~ret6; [L79] #t~short8 := ~someBinaryFLOATComparisonOperation(~res~0, 0.0); VAL [#NULL.base=0, #NULL.offset=0, #t~short8=false, ~res~0=7.0, ~x~0=0.0] [L79] assume !#t~short8; VAL [#NULL.base=0, #NULL.offset=0, #t~short8=false, ~res~0=7.0, ~x~0=0.0] [L79-L82] assume !#t~short8; [L79] havoc #t~short8; [L79] havoc #t~ret7; VAL [#NULL.base=0, #NULL.offset=0, ~res~0=7.0, ~x~0=0.0] [L80] assert false; VAL [#NULL.base=0, #NULL.offset=0, ~res~0=7.0, ~x~0=0.0] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.preprocessor.BoogiePreprocessorBacktranslator [?] CALL call ULTIMATE.init(); VAL [#NULL.base=11, #NULL.offset=5, old(#NULL.base)=11, old(#NULL.offset)=5] [?] #NULL.base, #NULL.offset := 0, 0; [?] #valid := #valid[0 := 0]; VAL [#NULL.base=0, #NULL.offset=0, old(#NULL.base)=11, old(#NULL.offset)=5] [?] ensures true; VAL [#NULL.base=0, #NULL.offset=0, old(#NULL.base)=11, old(#NULL.offset)=5] [?] RET call ULTIMATE.init(); VAL [#NULL.base=0, #NULL.offset=0] [?] CALL call #t~ret9 := main(); VAL [#NULL.base=0, #NULL.offset=0] [L75] ~x~0 := 0.0; VAL [#NULL.base=0, #NULL.offset=0, ~x~0=0.0] [L76] CALL call #t~ret6 := round_float(~x~0); VAL [#in~x=0.0, #NULL.base=0, #NULL.offset=0] [L12-L53] ~x := #in~x; [L13] havoc ~w~0; [L15] havoc ~exponent_less_127~0; VAL [#in~x=0.0, #NULL.base=0, #NULL.offset=0, ~x=0.0] [L18] call ~#gf_u~0.base, ~#gf_u~0.offset := #Ultimate.alloc(4); [L19] call write~real(~x, ~#gf_u~0.base, ~#gf_u~0.offset, 4); [L20] call #t~mem0 := read~int(~#gf_u~0.base, ~#gf_u~0.offset, 4); [L20] ~w~0 := #t~mem0; [L20] call write~real(#t~union1, ~#gf_u~0.base, ~#gf_u~0.offset, 4); [L20] havoc #t~union1; [L20] havoc #t~mem0; [L18] call ULTIMATE.dealloc(~#gf_u~0.base, ~#gf_u~0.offset); [L18] havoc ~#gf_u~0.base, ~#gf_u~0.offset; VAL [#in~x=0.0, #NULL.base=0, #NULL.offset=0, ~w~0=9, ~x=0.0] [L23] ~exponent_less_127~0 := (if ~bitwiseAnd(~w~0, 2139095040) / 8388608 % 4294967296 % 4294967296 <= 2147483647 then ~bitwiseAnd(~w~0, 2139095040) / 8388608 % 4294967296 % 4294967296 else ~bitwiseAnd(~w~0, 2139095040) / 8388608 % 4294967296 % 4294967296 - 4294967296) - 127; VAL [#in~x=0.0, #NULL.base=0, #NULL.offset=0, ~exponent_less_127~0=128, ~w~0=9, ~x=0.0] [L25-L46] assume !(~exponent_less_127~0 < 23); VAL [#in~x=0.0, #NULL.base=0, #NULL.offset=0, ~exponent_less_127~0=128, ~w~0=9, ~x=0.0] [L41-L45] assume 128 == ~exponent_less_127~0; [L43] #res := ~someBinaryArithmeticFLOAToperation(~x, ~x); VAL [#in~x=0.0, #NULL.base=0, #NULL.offset=0, ~exponent_less_127~0=128, ~w~0=9, ~x=0.0] [L12-L53] ensures true; VAL [#in~x=0.0, #NULL.base=0, #NULL.offset=0, ~exponent_less_127~0=128, ~w~0=9, ~x=0.0] [L76] RET call #t~ret6 := round_float(~x~0); VAL [#NULL.base=0, #NULL.offset=0, #t~ret6=7.0, ~x~0=0.0] [L76] ~res~0 := #t~ret6; [L76] havoc #t~ret6; [L79] #t~short8 := ~someBinaryFLOATComparisonOperation(~res~0, 0.0); VAL [#NULL.base=0, #NULL.offset=0, #t~short8=false, ~res~0=7.0, ~x~0=0.0] [L79] assume !#t~short8; VAL [#NULL.base=0, #NULL.offset=0, #t~short8=false, ~res~0=7.0, ~x~0=0.0] [L79-L82] assume !#t~short8; [L79] havoc #t~short8; [L79] havoc #t~ret7; VAL [#NULL.base=0, #NULL.offset=0, ~res~0=7.0, ~x~0=0.0] [L80] assert false; VAL [#NULL.base=0, #NULL.offset=0, ~res~0=7.0, ~x~0=0.0] [?] CALL call ULTIMATE.init(); VAL [#NULL!base=11, #NULL!offset=5, old(#NULL!base)=11, old(#NULL!offset)=5] [?] #NULL := { base: 0, offset: 0 }; [?] #valid[0] := 0; VAL [#NULL!base=0, #NULL!offset=0, old(#NULL!base)=11, old(#NULL!offset)=5] [?] RET call ULTIMATE.init(); VAL [#NULL!base=0, #NULL!offset=0] [?] CALL call #t~ret9 := main(); VAL [#NULL!base=0, #NULL!offset=0] [L75] ~x~0 := 0.0; VAL [#NULL!base=0, #NULL!offset=0, ~x~0=0.0] [L76] CALL call #t~ret6 := round_float(~x~0); VAL [#in~x=0.0, #NULL!base=0, #NULL!offset=0] [L12-L53] ~x := #in~x; [L13] havoc ~w~0; [L15] havoc ~exponent_less_127~0; VAL [#in~x=0.0, #NULL!base=0, #NULL!offset=0, ~x=0.0] [L18] FCALL call ~#gf_u~0 := #Ultimate.alloc(4); [L19] FCALL call write~real(~x, { base: ~#gf_u~0!base, offset: ~#gf_u~0!offset }, 4); [L20] FCALL call #t~mem0 := read~int({ base: ~#gf_u~0!base, offset: ~#gf_u~0!offset }, 4); [L20] ~w~0 := #t~mem0; [L20] FCALL call write~real(#t~union1, { base: ~#gf_u~0!base, offset: ~#gf_u~0!offset }, 4); [L20] havoc #t~union1; [L20] havoc #t~mem0; [L18] FCALL call ULTIMATE.dealloc(~#gf_u~0); [L18] havoc ~#gf_u~0; VAL [#in~x=0.0, #NULL!base=0, #NULL!offset=0, ~w~0=9, ~x=0.0] [L23] ~exponent_less_127~0 := (if ~bitwiseAnd(~w~0, 2139095040) / 8388608 % 4294967296 % 4294967296 <= 2147483647 then ~bitwiseAnd(~w~0, 2139095040) / 8388608 % 4294967296 % 4294967296 else ~bitwiseAnd(~w~0, 2139095040) / 8388608 % 4294967296 % 4294967296 - 4294967296) - 127; VAL [#in~x=0.0, #NULL!base=0, #NULL!offset=0, ~exponent_less_127~0=128, ~w~0=9, ~x=0.0] [L25] COND FALSE !(~exponent_less_127~0 < 23) VAL [#in~x=0.0, #NULL!base=0, #NULL!offset=0, ~exponent_less_127~0=128, ~w~0=9, ~x=0.0] [L41] COND TRUE 128 == ~exponent_less_127~0 [L43] #res := ~someBinaryArithmeticFLOAToperation(~x, ~x); VAL [#in~x=0.0, #NULL!base=0, #NULL!offset=0, ~exponent_less_127~0=128, ~w~0=9, ~x=0.0] [L76] RET call #t~ret6 := round_float(~x~0); VAL [#NULL!base=0, #NULL!offset=0, #t~ret6=7.0, ~x~0=0.0] [L76] ~res~0 := #t~ret6; [L76] havoc #t~ret6; [L79] #t~short8 := ~someBinaryFLOATComparisonOperation(~res~0, 0.0); VAL [#NULL!base=0, #NULL!offset=0, #t~short8=false, ~res~0=7.0, ~x~0=0.0] [L79] COND FALSE !(#t~short8) VAL [#NULL!base=0, #NULL!offset=0, #t~short8=false, ~res~0=7.0, ~x~0=0.0] [L79] COND TRUE !#t~short8 [L79] havoc #t~short8; [L79] havoc #t~ret7; VAL [#NULL!base=0, #NULL!offset=0, ~res~0=7.0, ~x~0=0.0] [L80] assert false; VAL [#NULL!base=0, #NULL!offset=0, ~res~0=7.0, ~x~0=0.0] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator [?] CALL call ULTIMATE.init(); VAL [#NULL!base=11, #NULL!offset=5, old(#NULL!base)=11, old(#NULL!offset)=5] [?] #NULL := { base: 0, offset: 0 }; [?] #valid[0] := 0; VAL [#NULL!base=0, #NULL!offset=0, old(#NULL!base)=11, old(#NULL!offset)=5] [?] RET call ULTIMATE.init(); VAL [#NULL!base=0, #NULL!offset=0] [?] CALL call #t~ret9 := main(); VAL [#NULL!base=0, #NULL!offset=0] [L75] ~x~0 := 0.0; VAL [#NULL!base=0, #NULL!offset=0, ~x~0=0.0] [L76] CALL call #t~ret6 := round_float(~x~0); VAL [#in~x=0.0, #NULL!base=0, #NULL!offset=0] [L12-L53] ~x := #in~x; [L13] havoc ~w~0; [L15] havoc ~exponent_less_127~0; VAL [#in~x=0.0, #NULL!base=0, #NULL!offset=0, ~x=0.0] [L18] FCALL call ~#gf_u~0 := #Ultimate.alloc(4); [L19] FCALL call write~real(~x, { base: ~#gf_u~0!base, offset: ~#gf_u~0!offset }, 4); [L20] FCALL call #t~mem0 := read~int({ base: ~#gf_u~0!base, offset: ~#gf_u~0!offset }, 4); [L20] ~w~0 := #t~mem0; [L20] FCALL call write~real(#t~union1, { base: ~#gf_u~0!base, offset: ~#gf_u~0!offset }, 4); [L20] havoc #t~union1; [L20] havoc #t~mem0; [L18] FCALL call ULTIMATE.dealloc(~#gf_u~0); [L18] havoc ~#gf_u~0; VAL [#in~x=0.0, #NULL!base=0, #NULL!offset=0, ~w~0=9, ~x=0.0] [L23] ~exponent_less_127~0 := (if ~bitwiseAnd(~w~0, 2139095040) / 8388608 % 4294967296 % 4294967296 <= 2147483647 then ~bitwiseAnd(~w~0, 2139095040) / 8388608 % 4294967296 % 4294967296 else ~bitwiseAnd(~w~0, 2139095040) / 8388608 % 4294967296 % 4294967296 - 4294967296) - 127; VAL [#in~x=0.0, #NULL!base=0, #NULL!offset=0, ~exponent_less_127~0=128, ~w~0=9, ~x=0.0] [L25] COND FALSE !(~exponent_less_127~0 < 23) VAL [#in~x=0.0, #NULL!base=0, #NULL!offset=0, ~exponent_less_127~0=128, ~w~0=9, ~x=0.0] [L41] COND TRUE 128 == ~exponent_less_127~0 [L43] #res := ~someBinaryArithmeticFLOAToperation(~x, ~x); VAL [#in~x=0.0, #NULL!base=0, #NULL!offset=0, ~exponent_less_127~0=128, ~w~0=9, ~x=0.0] [L76] RET call #t~ret6 := round_float(~x~0); VAL [#NULL!base=0, #NULL!offset=0, #t~ret6=7.0, ~x~0=0.0] [L76] ~res~0 := #t~ret6; [L76] havoc #t~ret6; [L79] #t~short8 := ~someBinaryFLOATComparisonOperation(~res~0, 0.0); VAL [#NULL!base=0, #NULL!offset=0, #t~short8=false, ~res~0=7.0, ~x~0=0.0] [L79] COND FALSE !(#t~short8) VAL [#NULL!base=0, #NULL!offset=0, #t~short8=false, ~res~0=7.0, ~x~0=0.0] [L79] COND TRUE !#t~short8 [L79] havoc #t~short8; [L79] havoc #t~ret7; VAL [#NULL!base=0, #NULL!offset=0, ~res~0=7.0, ~x~0=0.0] [L80] assert false; VAL [#NULL!base=0, #NULL!offset=0, ~res~0=7.0, ~x~0=0.0] [?] CALL call ULTIMATE.init(); VAL [#NULL!base=11, #NULL!offset=5, old(#NULL!base)=11, old(#NULL!offset)=5] [?] #NULL := { base: 0, offset: 0 }; [?] #valid[0] := 0; VAL [#NULL!base=0, #NULL!offset=0, old(#NULL!base)=11, old(#NULL!offset)=5] [?] RET call ULTIMATE.init(); VAL [#NULL!base=0, #NULL!offset=0] [?] CALL call #t~ret9 := main(); VAL [#NULL!base=0, #NULL!offset=0] [L75] ~x~0 := 0.0; VAL [#NULL!base=0, #NULL!offset=0, ~x~0=0.0] [L76] CALL call #t~ret6 := round_float(~x~0); VAL [#in~x=0.0, #NULL!base=0, #NULL!offset=0] [L12-L53] ~x := #in~x; [L13] havoc ~w~0; [L15] havoc ~exponent_less_127~0; VAL [#in~x=0.0, #NULL!base=0, #NULL!offset=0, ~x=0.0] [L18] FCALL call ~#gf_u~0 := #Ultimate.alloc(4); [L19] FCALL call write~real(~x, { base: ~#gf_u~0!base, offset: ~#gf_u~0!offset }, 4); [L20] FCALL call #t~mem0 := read~int({ base: ~#gf_u~0!base, offset: ~#gf_u~0!offset }, 4); [L20] ~w~0 := #t~mem0; [L20] FCALL call write~real(#t~union1, { base: ~#gf_u~0!base, offset: ~#gf_u~0!offset }, 4); [L20] havoc #t~union1; [L20] havoc #t~mem0; [L18] FCALL call ULTIMATE.dealloc(~#gf_u~0); [L18] havoc ~#gf_u~0; VAL [#in~x=0.0, #NULL!base=0, #NULL!offset=0, ~w~0=9, ~x=0.0] [L23] ~exponent_less_127~0 := (if ~bitwiseAnd(~w~0, 2139095040) / 8388608 % 4294967296 % 4294967296 <= 2147483647 then ~bitwiseAnd(~w~0, 2139095040) / 8388608 % 4294967296 % 4294967296 else ~bitwiseAnd(~w~0, 2139095040) / 8388608 % 4294967296 % 4294967296 - 4294967296) - 127; VAL [#in~x=0.0, #NULL!base=0, #NULL!offset=0, ~exponent_less_127~0=128, ~w~0=9, ~x=0.0] [L25] COND FALSE !(~exponent_less_127~0 < 23) VAL [#in~x=0.0, #NULL!base=0, #NULL!offset=0, ~exponent_less_127~0=128, ~w~0=9, ~x=0.0] [L41] COND TRUE 128 == ~exponent_less_127~0 [L43] #res := ~someBinaryArithmeticFLOAToperation(~x, ~x); VAL [#in~x=0.0, #NULL!base=0, #NULL!offset=0, ~exponent_less_127~0=128, ~w~0=9, ~x=0.0] [L76] RET call #t~ret6 := round_float(~x~0); VAL [#NULL!base=0, #NULL!offset=0, #t~ret6=7.0, ~x~0=0.0] [L76] ~res~0 := #t~ret6; [L76] havoc #t~ret6; [L79] #t~short8 := ~someBinaryFLOATComparisonOperation(~res~0, 0.0); VAL [#NULL!base=0, #NULL!offset=0, #t~short8=false, ~res~0=7.0, ~x~0=0.0] [L79] COND FALSE !(#t~short8) VAL [#NULL!base=0, #NULL!offset=0, #t~short8=false, ~res~0=7.0, ~x~0=0.0] [L79] COND TRUE !#t~short8 [L79] havoc #t~short8; [L79] havoc #t~ret7; VAL [#NULL!base=0, #NULL!offset=0, ~res~0=7.0, ~x~0=0.0] [L80] assert false; VAL [#NULL!base=0, #NULL!offset=0, ~res~0=7.0, ~x~0=0.0] ----- ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator [?] CALL call ULTIMATE.init(); VAL [#NULL!base=11, #NULL!offset=5, old(#NULL!base)=11, old(#NULL!offset)=5] [?] #NULL := { base: 0, offset: 0 }; [?] #valid[0] := 0; VAL [#NULL!base=0, #NULL!offset=0, old(#NULL!base)=11, old(#NULL!offset)=5] [?] RET call ULTIMATE.init(); VAL [#NULL!base=0, #NULL!offset=0] [?] CALL call #t~ret9 := main(); VAL [#NULL!base=0, #NULL!offset=0] [L75] ~x~0 := 0.0; VAL [#NULL!base=0, #NULL!offset=0, ~x~0=0.0] [L76] CALL call #t~ret6 := round_float(~x~0); VAL [#in~x=0.0, #NULL!base=0, #NULL!offset=0] [L12-L53] ~x := #in~x; [L13] havoc ~w~0; [L15] havoc ~exponent_less_127~0; VAL [#in~x=0.0, #NULL!base=0, #NULL!offset=0, ~x=0.0] [L18] FCALL call ~#gf_u~0 := #Ultimate.alloc(4); [L19] FCALL call write~real(~x, { base: ~#gf_u~0!base, offset: ~#gf_u~0!offset }, 4); [L20] FCALL call #t~mem0 := read~int({ base: ~#gf_u~0!base, offset: ~#gf_u~0!offset }, 4); [L20] ~w~0 := #t~mem0; [L20] FCALL call write~real(#t~union1, { base: ~#gf_u~0!base, offset: ~#gf_u~0!offset }, 4); [L20] havoc #t~union1; [L20] havoc #t~mem0; [L18] FCALL call ULTIMATE.dealloc(~#gf_u~0); [L18] havoc ~#gf_u~0; VAL [#in~x=0.0, #NULL!base=0, #NULL!offset=0, ~w~0=9, ~x=0.0] [L23] ~exponent_less_127~0 := (if ~bitwiseAnd(~w~0, 2139095040) / 8388608 % 4294967296 % 4294967296 <= 2147483647 then ~bitwiseAnd(~w~0, 2139095040) / 8388608 % 4294967296 % 4294967296 else ~bitwiseAnd(~w~0, 2139095040) / 8388608 % 4294967296 % 4294967296 - 4294967296) - 127; VAL [#in~x=0.0, #NULL!base=0, #NULL!offset=0, ~exponent_less_127~0=128, ~w~0=9, ~x=0.0] [L25] COND FALSE !(~exponent_less_127~0 < 23) VAL [#in~x=0.0, #NULL!base=0, #NULL!offset=0, ~exponent_less_127~0=128, ~w~0=9, ~x=0.0] [L41] COND TRUE 128 == ~exponent_less_127~0 [L43] #res := ~someBinaryArithmeticFLOAToperation(~x, ~x); VAL [#in~x=0.0, #NULL!base=0, #NULL!offset=0, ~exponent_less_127~0=128, ~w~0=9, ~x=0.0] [L76] RET call #t~ret6 := round_float(~x~0); VAL [#NULL!base=0, #NULL!offset=0, #t~ret6=7.0, ~x~0=0.0] [L76] ~res~0 := #t~ret6; [L76] havoc #t~ret6; [L79] #t~short8 := ~someBinaryFLOATComparisonOperation(~res~0, 0.0); VAL [#NULL!base=0, #NULL!offset=0, #t~short8=false, ~res~0=7.0, ~x~0=0.0] [L79] COND FALSE !(#t~short8) VAL [#NULL!base=0, #NULL!offset=0, #t~short8=false, ~res~0=7.0, ~x~0=0.0] [L79] COND TRUE !#t~short8 [L79] havoc #t~short8; [L79] havoc #t~ret7; VAL [#NULL!base=0, #NULL!offset=0, ~res~0=7.0, ~x~0=0.0] [L80] assert false; VAL [#NULL!base=0, #NULL!offset=0, ~res~0=7.0, ~x~0=0.0] [L75] float x = 0.0f; VAL [x=0] [L76] CALL, EXPR round_float(x) VAL [\old(x)=0] [L13] __uint32_t w; [L15] int exponent_less_127; VAL [\old(x)=0, x=0] [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 VAL [\old(x)=0, exponent_less_127=128, w=9, x=0] [L25] COND FALSE !(exponent_less_127 < 23) VAL [\old(x)=0, exponent_less_127=128, w=9, x=0] [L41] COND TRUE exponent_less_127 == 128 [L43] return x + x; VAL [\old(x)=0, exponent_less_127=128, w=9, x=0] [L76] RET, EXPR round_float(x) VAL [round_float(x)=7, x=0] [L76] float res = round_float(x); [L79] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=7, res == 0.0f && __signbit_float(res) == 0=0, x=0] [L79] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L80] __VERIFIER_error() VAL [res=7, x=0] ----- [2018-11-22 21:48:00,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 09:48:00 BoogieIcfgContainer [2018-11-22 21:48:00,750 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-22 21:48:00,750 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-22 21:48:00,750 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-22 21:48:00,750 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-22 21:48:00,751 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:48:00" (3/4) ... [2018-11-22 21:48:00,754 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-22 21:48:00,754 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-22 21:48:00,755 INFO L168 Benchmark]: Toolchain (without parser) took 885.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 959.2 MB in the beginning and 1.1 GB in the end (delta: -121.9 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2018-11-22 21:48:00,756 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 21:48:00,756 INFO L168 Benchmark]: CACSL2BoogieTranslator took 163.39 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 945.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-22 21:48:00,757 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.43 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 21:48:00,757 INFO L168 Benchmark]: Boogie Preprocessor took 66.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -189.9 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-22 21:48:00,758 INFO L168 Benchmark]: RCFGBuilder took 274.71 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2018-11-22 21:48:00,758 INFO L168 Benchmark]: TraceAbstraction took 350.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2018-11-22 21:48:00,759 INFO L168 Benchmark]: Witness Printer took 3.85 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-22 21:48:00,761 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 163.39 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 945.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 23.43 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 66.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -189.9 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 274.71 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 350.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. * Witness Printer took 3.85 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 79, overapproximation of bitwiseAnd at line 23, overapproximation of someBinaryArithmeticFLOAToperation at line 43. Possible FailurePath: [L75] float x = 0.0f; VAL [x=0] [L76] CALL, EXPR round_float(x) VAL [\old(x)=0] [L13] __uint32_t w; [L15] int exponent_less_127; VAL [\old(x)=0, x=0] [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 VAL [\old(x)=0, exponent_less_127=128, w=9, x=0] [L25] COND FALSE !(exponent_less_127 < 23) VAL [\old(x)=0, exponent_less_127=128, w=9, x=0] [L41] COND TRUE exponent_less_127 == 128 [L43] return x + x; VAL [\old(x)=0, exponent_less_127=128, w=9, x=0] [L76] RET, EXPR round_float(x) VAL [round_float(x)=7, x=0] [L76] float res = round_float(x); [L79] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=7, res == 0.0f && __signbit_float(res) == 0=0, x=0] [L79] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L80] __VERIFIER_error() VAL [res=7, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 38 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 43 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=38occurred 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, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 289 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-aa41828 [2018-11-22 21:48:02,211 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 21:48:02,213 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 21:48:02,220 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 21:48:02,220 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 21:48:02,221 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 21:48:02,222 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 21:48:02,223 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 21:48:02,224 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 21:48:02,225 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 21:48:02,225 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 21:48:02,226 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 21:48:02,226 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 21:48:02,227 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 21:48:02,228 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 21:48:02,229 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 21:48:02,229 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 21:48:02,231 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 21:48:02,232 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 21:48:02,233 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 21:48:02,234 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 21:48:02,235 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 21:48:02,237 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 21:48:02,238 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 21:48:02,238 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 21:48:02,238 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 21:48:02,239 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 21:48:02,240 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 21:48:02,241 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 21:48:02,242 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 21:48:02,242 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 21:48:02,242 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 21:48:02,242 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 21:48:02,242 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 21:48:02,243 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 21:48:02,244 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 21:48:02,244 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-22 21:48:02,255 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 21:48:02,256 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 21:48:02,256 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-22 21:48:02,256 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-22 21:48:02,256 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-22 21:48:02,256 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-22 21:48:02,257 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-22 21:48:02,257 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-22 21:48:02,257 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-22 21:48:02,257 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-22 21:48:02,257 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 21:48:02,258 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-22 21:48:02,258 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-22 21:48:02,258 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 21:48:02,258 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-22 21:48:02,258 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-22 21:48:02,258 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-22 21:48:02,258 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-22 21:48:02,259 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-22 21:48:02,259 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-22 21:48:02,259 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-22 21:48:02,259 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 21:48:02,259 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-22 21:48:02,259 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 21:48:02,259 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 21:48:02,259 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-22 21:48:02,260 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-22 21:48:02,260 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-22 21:48:02,260 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 21:48:02,260 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-22 21:48:02,260 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-22 21:48:02,261 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-22 21:48:02,262 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-22 21:48:02,262 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-22 21:48:02,262 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-22 21:48:02,262 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_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/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 -> 9a3696439220bbea1d6ed5ed3b22aa10206af5de [2018-11-22 21:48:02,290 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 21:48:02,298 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 21:48:02,300 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 21:48:02,301 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 21:48:02,302 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 21:48:02,302 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1032a_true-unreach-call.c [2018-11-22 21:48:02,340 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/bin-2019/utaipan/data/ac8d30c38/bb1298dac6064689a2f3c463aefd7f13/FLAG13965f3c1 [2018-11-22 21:48:02,649 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 21:48:02,649 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/sv-benchmarks/c/float-newlib/float_req_bl_1032a_true-unreach-call.c [2018-11-22 21:48:02,655 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/bin-2019/utaipan/data/ac8d30c38/bb1298dac6064689a2f3c463aefd7f13/FLAG13965f3c1 [2018-11-22 21:48:02,664 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/bin-2019/utaipan/data/ac8d30c38/bb1298dac6064689a2f3c463aefd7f13 [2018-11-22 21:48:02,666 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 21:48:02,667 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-22 21:48:02,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 21:48:02,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 21:48:02,670 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 21:48:02,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:48:02" (1/1) ... [2018-11-22 21:48:02,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75dbc63f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:48:02, skipping insertion in model container [2018-11-22 21:48:02,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:48:02" (1/1) ... [2018-11-22 21:48:02,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 21:48:02,696 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 21:48:02,827 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 21:48:02,831 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 21:48:02,849 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 21:48:02,864 INFO L195 MainTranslator]: Completed translation [2018-11-22 21:48:02,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:48:02 WrapperNode [2018-11-22 21:48:02,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 21:48:02,865 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-22 21:48:02,865 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-22 21:48:02,865 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-22 21:48:02,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:48:02" (1/1) ... [2018-11-22 21:48:02,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:48:02" (1/1) ... [2018-11-22 21:48:02,884 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-22 21:48:02,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 21:48:02,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 21:48:02,885 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 21:48:02,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:48:02" (1/1) ... [2018-11-22 21:48:02,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:48:02" (1/1) ... [2018-11-22 21:48:02,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:48:02" (1/1) ... [2018-11-22 21:48:02,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:48:02" (1/1) ... [2018-11-22 21:48:02,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:48:02" (1/1) ... [2018-11-22 21:48:02,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:48:02" (1/1) ... [2018-11-22 21:48:02,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:48:02" (1/1) ... [2018-11-22 21:48:02,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 21:48:02,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 21:48:02,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 21:48:02,914 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 21:48:02,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:48:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/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 [2018-11-22 21:48:02,992 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-22 21:48:02,992 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-22 21:48:02,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-11-22 21:48:02,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-22 21:48:02,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-22 21:48:02,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-22 21:48:02,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-22 21:48:02,993 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2018-11-22 21:48:02,993 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2018-11-22 21:48:02,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 21:48:02,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 21:48:02,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-22 21:48:02,993 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-11-22 21:48:02,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-11-22 21:48:02,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-22 21:48:02,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-22 21:48:03,185 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 21:48:03,186 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-22 21:48:03,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:48:03 BoogieIcfgContainer [2018-11-22 21:48:03,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 21:48:03,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-22 21:48:03,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-22 21:48:03,189 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-22 21:48:03,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:48:02" (1/3) ... [2018-11-22 21:48:03,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b99a022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:48:03, skipping insertion in model container [2018-11-22 21:48:03,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:48:02" (2/3) ... [2018-11-22 21:48:03,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b99a022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:48:03, skipping insertion in model container [2018-11-22 21:48:03,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:48:03" (3/3) ... [2018-11-22 21:48:03,192 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032a_true-unreach-call.c [2018-11-22 21:48:03,201 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-22 21:48:03,208 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-22 21:48:03,218 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-22 21:48:03,238 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-22 21:48:03,238 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-22 21:48:03,238 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-22 21:48:03,238 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-22 21:48:03,238 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-22 21:48:03,238 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-22 21:48:03,238 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-22 21:48:03,239 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-22 21:48:03,239 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-22 21:48:03,248 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2018-11-22 21:48:03,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-22 21:48:03,252 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:48:03,252 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:48:03,254 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:48:03,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:48:03,257 INFO L82 PathProgramCache]: Analyzing trace with hash 564888569, now seen corresponding path program 1 times [2018-11-22 21:48:03,260 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-22 21:48:03,260 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/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 [2018-11-22 21:48:03,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:48:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:48:03,318 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:48:03,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:48:03,331 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-22 21:48:03,340 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 21:48:03,340 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-22 21:48:03,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-22 21:48:03,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-22 21:48:03,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-22 21:48:03,352 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2018-11-22 21:48:03,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:48:03,371 INFO L93 Difference]: Finished difference Result 68 states and 93 transitions. [2018-11-22 21:48:03,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-22 21:48:03,373 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-11-22 21:48:03,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 21:48:03,379 INFO L225 Difference]: With dead ends: 68 [2018-11-22 21:48:03,379 INFO L226 Difference]: Without dead ends: 34 [2018-11-22 21:48:03,381 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-22 21:48:03,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-22 21:48:03,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-11-22 21:48:03,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-22 21:48:03,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2018-11-22 21:48:03,409 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 18 [2018-11-22 21:48:03,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 21:48:03,409 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2018-11-22 21:48:03,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-22 21:48:03,410 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2018-11-22 21:48:03,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-22 21:48:03,410 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:48:03,410 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:48:03,410 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:48:03,411 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:48:03,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1333163618, now seen corresponding path program 1 times [2018-11-22 21:48:03,411 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-22 21:48:03,411 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/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 [2018-11-22 21:48:03,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:48:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:48:03,462 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:48:03,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:48:03,561 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-22 21:48:03,568 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 21:48:03,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-22 21:48:03,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-22 21:48:03,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-22 21:48:03,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-22 21:48:03,570 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 7 states. [2018-11-22 21:48:03,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:48:03,934 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2018-11-22 21:48:03,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-22 21:48:03,935 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-11-22 21:48:03,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 21:48:03,936 INFO L225 Difference]: With dead ends: 51 [2018-11-22 21:48:03,936 INFO L226 Difference]: Without dead ends: 35 [2018-11-22 21:48:03,937 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-11-22 21:48:03,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-22 21:48:03,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-11-22 21:48:03,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-22 21:48:03,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2018-11-22 21:48:03,941 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 19 [2018-11-22 21:48:03,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 21:48:03,941 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2018-11-22 21:48:03,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-22 21:48:03,941 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2018-11-22 21:48:03,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-22 21:48:03,942 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:48:03,942 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:48:03,942 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:48:03,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:48:03,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1215677854, now seen corresponding path program 1 times [2018-11-22 21:48:03,943 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-22 21:48:03,943 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/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 [2018-11-22 21:48:03,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:48:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:48:03,970 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:48:04,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:48:04,042 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-22 21:48:04,048 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 21:48:04,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-22 21:48:04,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-22 21:48:04,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-22 21:48:04,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-22 21:48:04,049 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 7 states. [2018-11-22 21:48:04,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:48:04,345 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2018-11-22 21:48:04,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-22 21:48:04,346 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-11-22 21:48:04,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 21:48:04,347 INFO L225 Difference]: With dead ends: 53 [2018-11-22 21:48:04,347 INFO L226 Difference]: Without dead ends: 32 [2018-11-22 21:48:04,348 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-11-22 21:48:04,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-22 21:48:04,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-11-22 21:48:04,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-22 21:48:04,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2018-11-22 21:48:04,351 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 20 [2018-11-22 21:48:04,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 21:48:04,351 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2018-11-22 21:48:04,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-22 21:48:04,351 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2018-11-22 21:48:04,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-22 21:48:04,352 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:48:04,352 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:48:04,352 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:48:04,352 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:48:04,352 INFO L82 PathProgramCache]: Analyzing trace with hash 734742422, now seen corresponding path program 1 times [2018-11-22 21:48:04,353 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-22 21:48:04,353 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/bin-2019/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-22 21:48:04,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:48:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:48:04,382 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:48:04,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:48:04,467 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-22 21:48:04,478 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 21:48:04,479 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-22 21:48:04,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-22 21:48:04,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-22 21:48:04,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-22 21:48:04,480 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 7 states. [2018-11-22 21:48:04,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:48:04,649 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2018-11-22 21:48:04,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-22 21:48:04,650 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-11-22 21:48:04,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 21:48:04,650 INFO L225 Difference]: With dead ends: 50 [2018-11-22 21:48:04,651 INFO L226 Difference]: Without dead ends: 32 [2018-11-22 21:48:04,651 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-11-22 21:48:04,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-22 21:48:04,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-11-22 21:48:04,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-22 21:48:04,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-11-22 21:48:04,655 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 23 [2018-11-22 21:48:04,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 21:48:04,655 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-11-22 21:48:04,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-22 21:48:04,655 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-11-22 21:48:04,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-22 21:48:04,656 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:48:04,656 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:48:04,656 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:48:04,656 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:48:04,656 INFO L82 PathProgramCache]: Analyzing trace with hash 341715412, now seen corresponding path program 1 times [2018-11-22 21:48:04,656 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-22 21:48:04,657 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/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 [2018-11-22 21:48:04,659 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:48:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:48:04,682 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:48:04,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:48:04,736 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-22 21:48:04,747 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 21:48:04,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-22 21:48:04,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-22 21:48:04,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-22 21:48:04,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-22 21:48:04,749 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 7 states. [2018-11-22 21:48:04,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:48:04,819 INFO L93 Difference]: Finished difference Result 35 states and 34 transitions. [2018-11-22 21:48:04,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-22 21:48:04,819 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-11-22 21:48:04,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 21:48:04,820 INFO L225 Difference]: With dead ends: 35 [2018-11-22 21:48:04,820 INFO L226 Difference]: Without dead ends: 32 [2018-11-22 21:48:04,820 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-22 21:48:04,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-22 21:48:04,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-11-22 21:48:04,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-22 21:48:04,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 31 transitions. [2018-11-22 21:48:04,823 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 31 transitions. Word has length 23 [2018-11-22 21:48:04,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 21:48:04,823 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 31 transitions. [2018-11-22 21:48:04,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-22 21:48:04,823 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 31 transitions. [2018-11-22 21:48:04,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-22 21:48:04,824 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:48:04,824 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:48:04,824 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:48:04,824 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:48:04,824 INFO L82 PathProgramCache]: Analyzing trace with hash 841303647, now seen corresponding path program 1 times [2018-11-22 21:48:04,824 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-22 21:48:04,824 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/bin-2019/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-11-22 21:48:04,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:48:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:48:04,861 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:48:05,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:48:05,139 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-22 21:48:05,147 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 21:48:05,147 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-11-22 21:48:05,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-22 21:48:05,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-22 21:48:05,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-11-22 21:48:05,148 INFO L87 Difference]: Start difference. First operand 32 states and 31 transitions. Second operand 15 states. [2018-11-22 21:48:05,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:48:05,680 INFO L93 Difference]: Finished difference Result 32 states and 31 transitions. [2018-11-22 21:48:05,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-22 21:48:05,680 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 31 [2018-11-22 21:48:05,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 21:48:05,681 INFO L225 Difference]: With dead ends: 32 [2018-11-22 21:48:05,681 INFO L226 Difference]: Without dead ends: 0 [2018-11-22 21:48:05,681 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2018-11-22 21:48:05,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-22 21:48:05,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-22 21:48:05,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-22 21:48:05,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-22 21:48:05,682 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2018-11-22 21:48:05,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 21:48:05,682 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 21:48:05,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-22 21:48:05,683 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-22 21:48:05,683 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-22 21:48:05,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-22 21:48:05,741 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-22 21:48:05,741 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-22 21:48:05,741 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-22 21:48:05,741 INFO L451 ceAbstractionStarter]: At program point round_floatENTRY(lines 12 53) the Hoare annotation is: true [2018-11-22 21:48:05,742 INFO L448 ceAbstractionStarter]: For program point L33(lines 33 35) no Hoare annotation was computed. [2018-11-22 21:48:05,742 INFO L448 ceAbstractionStarter]: For program point L25(lines 25 46) no Hoare annotation was computed. [2018-11-22 21:48:05,742 INFO L448 ceAbstractionStarter]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2018-11-22 21:48:05,742 INFO L444 ceAbstractionStarter]: At program point L17-2(lines 17 21) the Hoare annotation is: (= round_float_~x |round_float_#in~x|) [2018-11-22 21:48:05,742 INFO L448 ceAbstractionStarter]: For program point L17-3(lines 17 21) no Hoare annotation was computed. [2018-11-22 21:48:05,742 INFO L448 ceAbstractionStarter]: For program point round_floatFINAL(lines 12 53) no Hoare annotation was computed. [2018-11-22 21:48:05,742 INFO L448 ceAbstractionStarter]: For program point round_floatEXIT(lines 12 53) no Hoare annotation was computed. [2018-11-22 21:48:05,742 INFO L448 ceAbstractionStarter]: For program point L28(lines 28 30) no Hoare annotation was computed. [2018-11-22 21:48:05,743 INFO L448 ceAbstractionStarter]: For program point L26(lines 26 39) no Hoare annotation was computed. [2018-11-22 21:48:05,743 INFO L448 ceAbstractionStarter]: For program point L47(lines 47 51) no Hoare annotation was computed. [2018-11-22 21:48:05,743 INFO L448 ceAbstractionStarter]: For program point L47-1(lines 12 53) no Hoare annotation was computed. [2018-11-22 21:48:05,743 INFO L448 ceAbstractionStarter]: For program point L47-2(lines 47 51) no Hoare annotation was computed. [2018-11-22 21:48:05,743 INFO L448 ceAbstractionStarter]: For program point L41(lines 41 45) no Hoare annotation was computed. [2018-11-22 21:48:05,743 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-22 21:48:05,743 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-22 21:48:05,744 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-22 21:48:05,744 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-22 21:48:05,744 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 67 85) the Hoare annotation is: true [2018-11-22 21:48:05,744 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 67 85) no Hoare annotation was computed. [2018-11-22 21:48:05,744 INFO L448 ceAbstractionStarter]: For program point L80(line 80) no Hoare annotation was computed. [2018-11-22 21:48:05,744 INFO L448 ceAbstractionStarter]: For program point L79(line 79) no Hoare annotation was computed. [2018-11-22 21:48:05,744 INFO L444 ceAbstractionStarter]: At program point L79-1(line 79) the Hoare annotation is: (and |main_#t~short8| (= (_ +zero 8 24) main_~x~0) (exists ((v_round_float_~w~0_14 (_ BitVec 32))) (and (= (_ +zero 8 24) (fp ((_ extract 31 31) v_round_float_~w~0_14) ((_ extract 30 23) v_round_float_~w~0_14) ((_ extract 22 0) v_round_float_~w~0_14))) (= main_~res~0 (let ((.cse0 (bvand (_ bv2147483648 32) v_round_float_~w~0_14))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0))))))) [2018-11-22 21:48:05,744 INFO L448 ceAbstractionStarter]: For program point L79-2(line 79) no Hoare annotation was computed. [2018-11-22 21:48:05,744 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 67 85) no Hoare annotation was computed. [2018-11-22 21:48:05,745 INFO L444 ceAbstractionStarter]: At program point L76(line 76) the Hoare annotation is: (= (_ +zero 8 24) main_~x~0) [2018-11-22 21:48:05,745 INFO L448 ceAbstractionStarter]: For program point L76-1(line 76) no Hoare annotation was computed. [2018-11-22 21:48:05,745 INFO L448 ceAbstractionStarter]: For program point L79-4(lines 79 82) no Hoare annotation was computed. [2018-11-22 21:48:05,745 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 80) no Hoare annotation was computed. [2018-11-22 21:48:05,745 INFO L448 ceAbstractionStarter]: For program point L58-1(lines 58 62) no Hoare annotation was computed. [2018-11-22 21:48:05,745 INFO L444 ceAbstractionStarter]: At program point L58-2(lines 58 62) the Hoare annotation is: (= |__signbit_float_#in~x| __signbit_float_~x) [2018-11-22 21:48:05,745 INFO L448 ceAbstractionStarter]: For program point __signbit_floatFINAL(lines 55 65) no Hoare annotation was computed. [2018-11-22 21:48:05,745 INFO L448 ceAbstractionStarter]: For program point L58-3(lines 58 62) no Hoare annotation was computed. [2018-11-22 21:48:05,746 INFO L451 ceAbstractionStarter]: At program point __signbit_floatENTRY(lines 55 65) the Hoare annotation is: true [2018-11-22 21:48:05,746 INFO L448 ceAbstractionStarter]: For program point __signbit_floatEXIT(lines 55 65) no Hoare annotation was computed. [2018-11-22 21:48:05,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 09:48:05 BoogieIcfgContainer [2018-11-22 21:48:05,755 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-22 21:48:05,756 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-22 21:48:05,756 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-22 21:48:05,756 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-22 21:48:05,756 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:48:03" (3/4) ... [2018-11-22 21:48:05,758 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-22 21:48:05,762 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-22 21:48:05,763 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure round_float [2018-11-22 21:48:05,763 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-22 21:48:05,763 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_float [2018-11-22 21:48:05,766 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2018-11-22 21:48:05,766 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-22 21:48:05,766 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-22 21:48:05,785 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x == \old(x) [2018-11-22 21:48:05,785 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-11-22 21:48:05,801 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_1758d70d-23b1-4aa0-a30b-79ddf4d386b3/bin-2019/utaipan/witness.graphml [2018-11-22 21:48:05,801 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-22 21:48:05,802 INFO L168 Benchmark]: Toolchain (without parser) took 3135.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 951.8 MB in the beginning and 850.8 MB in the end (delta: 101.0 MB). Peak memory consumption was 242.6 MB. Max. memory is 11.5 GB. [2018-11-22 21:48:05,803 INFO L168 Benchmark]: CDTParser took 0.12 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. [2018-11-22 21:48:05,803 INFO L168 Benchmark]: CACSL2BoogieTranslator took 197.25 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 935.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-22 21:48:05,803 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.51 ms. Allocated memory is still 1.0 GB. Free memory is still 935.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 21:48:05,804 INFO L168 Benchmark]: Boogie Preprocessor took 28.59 ms. Allocated memory is still 1.0 GB. Free memory is still 935.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 21:48:05,804 INFO L168 Benchmark]: RCFGBuilder took 272.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -174.6 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. [2018-11-22 21:48:05,804 INFO L168 Benchmark]: TraceAbstraction took 2568.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 850.8 MB in the end (delta: 259.5 MB). Peak memory consumption was 259.5 MB. Max. memory is 11.5 GB. [2018-11-22 21:48:05,805 INFO L168 Benchmark]: Witness Printer took 45.84 ms. Allocated memory is still 1.2 GB. Free memory is still 850.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 21:48:05,806 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 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 197.25 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 935.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.51 ms. Allocated memory is still 1.0 GB. Free memory is still 935.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.59 ms. Allocated memory is still 1.0 GB. Free memory is still 935.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 272.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -174.6 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2568.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 850.8 MB in the end (delta: 259.5 MB). Peak memory consumption was 259.5 MB. Max. memory is 11.5 GB. * Witness Printer took 45.84 ms. Allocated memory is still 1.2 GB. Free memory is still 850.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 80]: 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: 58]: Loop Invariant Derived loop invariant: \old(x) == x - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: x == \old(x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 38 locations, 1 error locations. SAFE Result, 2.5s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 168 SDtfs, 124 SDslu, 630 SDs, 0 SdLazy, 310 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 154 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 6 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 18 PreInvPairs, 21 NumberOfFragments, 46 HoareAnnotationTreeSize, 18 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 128 ConstructedInterpolants, 35 QuantifiedInterpolants, 22710 SizeOfPredicates, 23 NumberOfNonLiveVariables, 337 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...