./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/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 f441bd4a1f5705911b7315c074b39e665542818e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_3837aa22-b02b-4676-a359-2b7058e22d5c/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/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 f441bd4a1f5705911b7315c074b39e665542818e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 21:46:13,745 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:46:13,747 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:46:13,755 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:46:13,755 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:46:13,756 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:46:13,757 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:46:13,758 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:46:13,760 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:46:13,760 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:46:13,761 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:46:13,761 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:46:13,762 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:46:13,763 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:46:13,763 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:46:13,764 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:46:13,765 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:46:13,768 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:46:13,770 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:46:13,771 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:46:13,772 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:46:13,773 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:46:13,785 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 21:46:13,785 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 21:46:13,786 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 21:46:13,786 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 21:46:13,787 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 21:46:13,787 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 21:46:13,788 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 21:46:13,789 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 21:46:13,789 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 21:46:13,789 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 21:46:13,790 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 21:46:13,790 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 21:46:13,790 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 21:46:13,791 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 21:46:13,791 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-26 21:46:13,812 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:46:13,815 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:46:13,816 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:46:13,816 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 21:46:13,816 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 21:46:13,816 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 21:46:13,816 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 21:46:13,816 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 21:46:13,817 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 21:46:13,817 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 21:46:13,817 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 21:46:13,817 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:46:13,817 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 21:46:13,817 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 21:46:13,818 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 21:46:13,818 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:46:13,818 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:46:13,818 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:46:13,818 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:46:13,818 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 21:46:13,818 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:46:13,818 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:46:13,819 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:46:13,819 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:46:13,819 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:46:13,819 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:46:13,819 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:46:13,819 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:46:13,819 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:46:13,819 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:46:13,820 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 21:46:13,820 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:46:13,820 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 21:46:13,820 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 21:46:13,820 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_3837aa22-b02b-4676-a359-2b7058e22d5c/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 -> f441bd4a1f5705911b7315c074b39e665542818e [2018-10-26 21:46:13,845 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:46:13,855 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:46:13,858 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:46:13,859 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:46:13,860 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:46:13,860 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1252a_true-unreach-call.c [2018-10-26 21:46:13,908 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/bin-2019/utaipan/data/7b68606fb/f83d369fc1e24c60a3fdf532e0fa5364/FLAGb694fcf51 [2018-10-26 21:46:14,280 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:46:14,281 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/sv-benchmarks/c/float-newlib/float_req_bl_1252a_true-unreach-call.c [2018-10-26 21:46:14,286 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/bin-2019/utaipan/data/7b68606fb/f83d369fc1e24c60a3fdf532e0fa5364/FLAGb694fcf51 [2018-10-26 21:46:14,295 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/bin-2019/utaipan/data/7b68606fb/f83d369fc1e24c60a3fdf532e0fa5364 [2018-10-26 21:46:14,299 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:46:14,300 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 21:46:14,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:46:14,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:46:14,304 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:46:14,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:46:14" (1/1) ... [2018-10-26 21:46:14,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cf504d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:14, skipping insertion in model container [2018-10-26 21:46:14,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:46:14" (1/1) ... [2018-10-26 21:46:14,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:46:14,337 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:46:14,467 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:46:14,471 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:46:14,492 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:46:14,509 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:46:14,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:14 WrapperNode [2018-10-26 21:46:14,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:46:14,510 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:46:14,510 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:46:14,511 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:46:14,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:14" (1/1) ... [2018-10-26 21:46:14,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:14" (1/1) ... [2018-10-26 21:46:14,546 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:46:14,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:46:14,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:46:14,546 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:46:14,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:14" (1/1) ... [2018-10-26 21:46:14,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:14" (1/1) ... [2018-10-26 21:46:14,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:14" (1/1) ... [2018-10-26 21:46:14,557 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:14" (1/1) ... [2018-10-26 21:46:14,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:14" (1/1) ... [2018-10-26 21:46:14,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:14" (1/1) ... [2018-10-26 21:46:14,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:14" (1/1) ... [2018-10-26 21:46:14,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:46:14,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:46:14,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:46:14,572 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:46:14,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:46:14,734 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 21:46:14,734 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 21:46:14,734 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-10-26 21:46:14,734 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-10-26 21:46:14,734 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-10-26 21:46:14,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-10-26 21:46:14,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 21:46:14,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 21:46:14,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:46:14,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:46:14,735 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-10-26 21:46:14,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-10-26 21:46:15,252 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:46:15,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:46:15 BoogieIcfgContainer [2018-10-26 21:46:15,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:46:15,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:46:15,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:46:15,257 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:46:15,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:46:14" (1/3) ... [2018-10-26 21:46:15,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5073b140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:46:15, skipping insertion in model container [2018-10-26 21:46:15,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:14" (2/3) ... [2018-10-26 21:46:15,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5073b140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:46:15, skipping insertion in model container [2018-10-26 21:46:15,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:46:15" (3/3) ... [2018-10-26 21:46:15,260 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a_true-unreach-call.c [2018-10-26 21:46:15,268 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:46:15,278 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:46:15,292 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:46:15,326 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:46:15,326 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:46:15,326 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:46:15,326 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:46:15,327 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:46:15,327 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:46:15,327 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:46:15,327 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:46:15,343 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-10-26 21:46:15,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-26 21:46:15,349 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:15,350 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:46:15,352 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:15,357 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:15,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1632563656, now seen corresponding path program 1 times [2018-10-26 21:46:15,360 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 21:46:15,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:46:15,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:46:15,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:46:15,396 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 21:46:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:46:15,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:46:15,469 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:46:15,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 21:46:15,469 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 21:46:15,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 21:46:15,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 21:46:15,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 21:46:15,488 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-10-26 21:46:15,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:46:15,509 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2018-10-26 21:46:15,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 21:46:15,510 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-10-26 21:46:15,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:46:15,517 INFO L225 Difference]: With dead ends: 79 [2018-10-26 21:46:15,517 INFO L226 Difference]: Without dead ends: 40 [2018-10-26 21:46:15,520 INFO L605 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 [2018-10-26 21:46:15,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-26 21:46:15,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-26 21:46:15,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-26 21:46:15,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-10-26 21:46:15,555 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2018-10-26 21:46:15,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:46:15,556 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-10-26 21:46:15,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 21:46:15,556 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-10-26 21:46:15,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-26 21:46:15,558 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:15,559 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:46:15,559 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:15,559 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:15,559 INFO L82 PathProgramCache]: Analyzing trace with hash -330285144, now seen corresponding path program 1 times [2018-10-26 21:46:15,559 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 21:46:15,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:46:15,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:46:15,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:46:15,561 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 21:46:15,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:46:15,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:46:15,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:46:15,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:46:15,685 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 21:46:15,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:46:15,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:46:15,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:46:15,687 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-10-26 21:46:15,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:46:15,731 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2018-10-26 21:46:15,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:46:15,732 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-10-26 21:46:15,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:46:15,734 INFO L225 Difference]: With dead ends: 59 [2018-10-26 21:46:15,734 INFO L226 Difference]: Without dead ends: 44 [2018-10-26 21:46:15,735 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:46:15,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-26 21:46:15,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-10-26 21:46:15,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-26 21:46:15,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-10-26 21:46:15,743 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2018-10-26 21:46:15,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:46:15,744 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-10-26 21:46:15,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:46:15,744 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-10-26 21:46:15,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-26 21:46:15,744 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:15,745 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:46:15,745 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:15,745 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:15,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1694694321, now seen corresponding path program 1 times [2018-10-26 21:46:15,745 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 21:46:15,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:46:15,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:46:15,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:46:15,748 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 21:46:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:46:15,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:46:15,856 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:46:15,857 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:46:15,857 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 21:46:15,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:46:15,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:46:15,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:46:15,858 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2018-10-26 21:46:15,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:46:15,947 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2018-10-26 21:46:15,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:46:15,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-10-26 21:46:15,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:46:15,949 INFO L225 Difference]: With dead ends: 63 [2018-10-26 21:46:15,949 INFO L226 Difference]: Without dead ends: 48 [2018-10-26 21:46:15,950 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:46:15,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-26 21:46:15,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-10-26 21:46:15,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-26 21:46:15,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-10-26 21:46:15,960 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2018-10-26 21:46:15,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:46:15,960 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-10-26 21:46:15,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:46:15,961 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-10-26 21:46:15,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-26 21:46:15,961 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:15,961 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:46:15,962 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:15,962 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:15,962 INFO L82 PathProgramCache]: Analyzing trace with hash 803321616, now seen corresponding path program 1 times [2018-10-26 21:46:15,962 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 21:46:15,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:46:15,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:46:15,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:46:15,963 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 21:46:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 21:46:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 21:46:16,020 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 21:46:16,033 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:46:16,034 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:46:16,034 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:46:16,034 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:46:16,035 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:46:16,035 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:46:16,035 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:46:16,035 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:46:16,035 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:46:16,036 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:46:16,036 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:46:16,036 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:46:16,036 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:46:16,036 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:46:16,037 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:46:16,037 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:46:16,037 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:46:16,037 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:46:16,037 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:46:16,038 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:46:16,040 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:46:16,041 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:46:16,041 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:46:16,041 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:46:16,041 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:46:16,041 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:46:16,042 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:46:16,042 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:46:16,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 09:46:16 BoogieIcfgContainer [2018-10-26 21:46:16,055 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 21:46:16,055 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 21:46:16,055 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 21:46:16,055 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 21:46:16,056 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:46:15" (3/4) ... [2018-10-26 21:46:16,059 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-26 21:46:16,059 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 21:46:16,060 INFO L168 Benchmark]: Toolchain (without parser) took 1760.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 955.8 MB in the beginning and 1.1 GB in the end (delta: -132.7 MB). Peak memory consumption was 28.3 MB. Max. memory is 11.5 GB. [2018-10-26 21:46:16,061 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:46:16,062 INFO L168 Benchmark]: CACSL2BoogieTranslator took 209.26 ms. Allocated memory is still 1.0 GB. Free memory was 955.8 MB in the beginning and 945.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 21:46:16,063 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.65 ms. Allocated memory is still 1.0 GB. Free memory was 945.0 MB in the beginning and 942.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 21:46:16,063 INFO L168 Benchmark]: Boogie Preprocessor took 24.98 ms. Allocated memory is still 1.0 GB. Free memory was 942.4 MB in the beginning and 939.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 21:46:16,064 INFO L168 Benchmark]: RCFGBuilder took 681.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 939.7 MB in the beginning and 1.1 GB in the end (delta: -197.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2018-10-26 21:46:16,065 INFO L168 Benchmark]: TraceAbstraction took 801.68 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: 48.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 11.5 GB. [2018-10-26 21:46:16,065 INFO L168 Benchmark]: Witness Printer took 4.13 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:46:16,068 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 209.26 ms. Allocated memory is still 1.0 GB. Free memory was 955.8 MB in the beginning and 945.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.65 ms. Allocated memory is still 1.0 GB. Free memory was 945.0 MB in the beginning and 942.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.98 ms. Allocated memory is still 1.0 GB. Free memory was 942.4 MB in the beginning and 939.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 681.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 939.7 MB in the beginning and 1.1 GB in the end (delta: -197.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 801.68 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: 48.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 11.5 GB. * Witness Printer took 4.13 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 78, overapproximation of someUnaryFLOAToperation at line 72. Possible FailurePath: [L72] float x = -0.0f; [L73] float y = 0.0f; VAL [y=0] [L75] CALL, EXPR fmax_float(x, y) VAL [\old(x)=4286578692, \old(y)=0] [L43] CALL, EXPR __fpclassify_float(x) [L20] __uint32_t w; [L23] CALL ieee_float_shape_type gf_u; [L23] RET ieee_float_shape_type gf_u; [L24] CALL gf_u.value = (x) [L24] RET gf_u.value = (x) [L25] CALL, EXPR gf_u.word [L25] RET, EXPR gf_u.word [L25] (w) = gf_u.word [L25] RET (w) = gf_u.word [L26] COND FALSE !(0) [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] RET return 0; [L43] EXPR __fpclassify_float(x) VAL [\old(x)=4286578692, \old(y)=0, __fpclassify_float(x)=0, x=4286578692, y=0] [L43] COND TRUE __fpclassify_float(x) == 0 [L44] RET return y; VAL [\old(x)=4286578692, \old(y)=0, \result=0, x=4286578692, y=0] [L75] EXPR fmax_float(x, y) VAL [fmax_float(x, y)=0, x=4286578692, y=0] [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=0, res == 0.0f && __signbit_float(res) == 0=0, x=4286578692, y=0] [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() VAL [res=0, x=4286578692, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. UNSAFE Result, 0.7s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 149 SDtfs, 0 SDslu, 178 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1926 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-1dbac8b [2018-10-26 21:46:17,977 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:46:17,978 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:46:17,987 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:46:17,987 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:46:17,988 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:46:17,989 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:46:17,990 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:46:17,992 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:46:17,992 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:46:17,993 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:46:17,993 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:46:17,994 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:46:17,995 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:46:17,996 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:46:17,996 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:46:17,997 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:46:17,998 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:46:18,000 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:46:18,001 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:46:18,002 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:46:18,003 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:46:18,004 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 21:46:18,005 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 21:46:18,005 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 21:46:18,005 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 21:46:18,010 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 21:46:18,011 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 21:46:18,011 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 21:46:18,012 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 21:46:18,012 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 21:46:18,013 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 21:46:18,013 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 21:46:18,013 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 21:46:18,018 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 21:46:18,020 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 21:46:18,021 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-10-26 21:46:18,036 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:46:18,036 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:46:18,037 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:46:18,038 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 21:46:18,038 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 21:46:18,038 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 21:46:18,039 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 21:46:18,039 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 21:46:18,040 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:46:18,041 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 21:46:18,041 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 21:46:18,041 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:46:18,042 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:46:18,042 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:46:18,042 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:46:18,042 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-26 21:46:18,043 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-26 21:46:18,043 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 21:46:18,043 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:46:18,043 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:46:18,043 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:46:18,043 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:46:18,043 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:46:18,043 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:46:18,044 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:46:18,044 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:46:18,044 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:46:18,044 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:46:18,044 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-10-26 21:46:18,044 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:46:18,044 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-26 21:46:18,045 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-26 21:46:18,045 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_3837aa22-b02b-4676-a359-2b7058e22d5c/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 -> f441bd4a1f5705911b7315c074b39e665542818e [2018-10-26 21:46:18,089 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:46:18,099 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:46:18,102 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:46:18,103 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:46:18,104 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:46:18,104 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1252a_true-unreach-call.c [2018-10-26 21:46:18,153 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/bin-2019/utaipan/data/baeb0229e/0a0e6430a05f4d1d8cfad7dc8b54b4c3/FLAGf3a4eb560 [2018-10-26 21:46:18,533 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:46:18,533 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/sv-benchmarks/c/float-newlib/float_req_bl_1252a_true-unreach-call.c [2018-10-26 21:46:18,539 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/bin-2019/utaipan/data/baeb0229e/0a0e6430a05f4d1d8cfad7dc8b54b4c3/FLAGf3a4eb560 [2018-10-26 21:46:18,549 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/bin-2019/utaipan/data/baeb0229e/0a0e6430a05f4d1d8cfad7dc8b54b4c3 [2018-10-26 21:46:18,552 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:46:18,553 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 21:46:18,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:46:18,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:46:18,558 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:46:18,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:46:18" (1/1) ... [2018-10-26 21:46:18,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68d004eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:18, skipping insertion in model container [2018-10-26 21:46:18,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:46:18" (1/1) ... [2018-10-26 21:46:18,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:46:18,587 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:46:18,733 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:46:18,738 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:46:18,763 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:46:18,786 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:46:18,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:18 WrapperNode [2018-10-26 21:46:18,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:46:18,788 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:46:18,788 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:46:18,788 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:46:18,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:18" (1/1) ... [2018-10-26 21:46:18,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:18" (1/1) ... [2018-10-26 21:46:18,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:46:18,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:46:18,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:46:18,829 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:46:18,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:18" (1/1) ... [2018-10-26 21:46:18,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:18" (1/1) ... [2018-10-26 21:46:18,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:18" (1/1) ... [2018-10-26 21:46:18,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:18" (1/1) ... [2018-10-26 21:46:18,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:18" (1/1) ... [2018-10-26 21:46:18,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:18" (1/1) ... [2018-10-26 21:46:18,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:18" (1/1) ... [2018-10-26 21:46:18,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:46:18,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:46:18,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:46:18,878 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:46:18,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:46:19,011 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 21:46:19,011 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 21:46:19,012 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-10-26 21:46:19,012 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-10-26 21:46:19,012 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-10-26 21:46:19,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-10-26 21:46:19,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 21:46:19,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 21:46:19,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:46:19,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:46:19,012 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-10-26 21:46:19,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-10-26 21:46:19,398 WARN L317 ript$VariableManager]: TermVariabe |qquantified_#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-10-26 21:46:19,470 WARN L317 ript$VariableManager]: TermVariabe |qquantified_#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-10-26 21:46:19,474 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:46:19,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:46:19 BoogieIcfgContainer [2018-10-26 21:46:19,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:46:19,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:46:19,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:46:19,479 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:46:19,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:46:18" (1/3) ... [2018-10-26 21:46:19,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@173d87a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:46:19, skipping insertion in model container [2018-10-26 21:46:19,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:18" (2/3) ... [2018-10-26 21:46:19,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@173d87a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:46:19, skipping insertion in model container [2018-10-26 21:46:19,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:46:19" (3/3) ... [2018-10-26 21:46:19,483 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a_true-unreach-call.c [2018-10-26 21:46:19,492 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:46:19,500 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:46:19,514 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:46:19,539 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 21:46:19,539 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:46:19,539 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:46:19,539 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:46:19,539 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:46:19,540 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:46:19,540 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:46:19,540 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:46:19,540 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:46:19,555 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-10-26 21:46:19,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-26 21:46:19,560 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:19,561 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:46:19,563 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:19,567 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:19,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1894631508, now seen corresponding path program 1 times [2018-10-26 21:46:19,571 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:46:19,571 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-10-26 21:46:19,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:46:19,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:46:19,651 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:46:19,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:46:19,673 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:46:19,692 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:46:19,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 21:46:19,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 21:46:19,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 21:46:19,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 21:46:19,707 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-10-26 21:46:19,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:46:19,729 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-10-26 21:46:19,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 21:46:19,731 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-10-26 21:46:19,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:46:19,739 INFO L225 Difference]: With dead ends: 75 [2018-10-26 21:46:19,739 INFO L226 Difference]: Without dead ends: 38 [2018-10-26 21:46:19,743 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 21:46:19,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-26 21:46:19,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-10-26 21:46:19,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-26 21:46:19,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-10-26 21:46:19,787 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2018-10-26 21:46:19,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:46:19,787 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-10-26 21:46:19,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 21:46:19,787 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-10-26 21:46:19,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-26 21:46:19,789 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:19,789 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:46:19,789 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:19,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:19,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1732468330, now seen corresponding path program 1 times [2018-10-26 21:46:19,791 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:46:19,791 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 21:46:19,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-10-26 21:46:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:46:19,853 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:46:19,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:46:19,925 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:46:19,934 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:46:19,934 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:46:19,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:46:19,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:46:19,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:46:19,936 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-10-26 21:46:20,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:46:20,001 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-10-26 21:46:20,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:46:20,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-10-26 21:46:20,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:46:20,007 INFO L225 Difference]: With dead ends: 56 [2018-10-26 21:46:20,008 INFO L226 Difference]: Without dead ends: 41 [2018-10-26 21:46:20,009 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:46:20,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-26 21:46:20,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-26 21:46:20,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-26 21:46:20,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2018-10-26 21:46:20,023 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22 [2018-10-26 21:46:20,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:46:20,023 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-10-26 21:46:20,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:46:20,024 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2018-10-26 21:46:20,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-26 21:46:20,024 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:20,024 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:46:20,025 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:20,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:20,025 INFO L82 PathProgramCache]: Analyzing trace with hash 253537577, now seen corresponding path program 1 times [2018-10-26 21:46:20,025 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:46:20,025 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 21:46:20,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-10-26 21:46:20,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:46:20,089 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:46:20,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:46:20,379 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:46:20,394 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:46:20,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-26 21:46:20,394 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 21:46:20,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 21:46:20,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-26 21:46:20,395 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 8 states. [2018-10-26 21:46:21,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:46:21,028 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2018-10-26 21:46:21,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 21:46:21,029 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-10-26 21:46:21,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:46:21,030 INFO L225 Difference]: With dead ends: 60 [2018-10-26 21:46:21,030 INFO L226 Difference]: Without dead ends: 40 [2018-10-26 21:46:21,030 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-10-26 21:46:21,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-26 21:46:21,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-26 21:46:21,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-26 21:46:21,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-10-26 21:46:21,037 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 23 [2018-10-26 21:46:21,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:46:21,038 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-10-26 21:46:21,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 21:46:21,039 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-10-26 21:46:21,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-26 21:46:21,039 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:21,040 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:46:21,040 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:21,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:21,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1880877620, now seen corresponding path program 1 times [2018-10-26 21:46:21,041 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:46:21,041 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/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 [2018-10-26 21:46:21,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:46:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:46:21,112 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:46:21,135 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-26 21:46:21,135 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:46:21,144 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:46:21,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:46:21,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:46:21,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:46:21,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:46:21,145 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 4 states. [2018-10-26 21:46:21,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:46:21,242 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2018-10-26 21:46:21,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:46:21,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-10-26 21:46:21,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:46:21,245 INFO L225 Difference]: With dead ends: 56 [2018-10-26 21:46:21,245 INFO L226 Difference]: Without dead ends: 41 [2018-10-26 21:46:21,245 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:46:21,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-26 21:46:21,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-26 21:46:21,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-26 21:46:21,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-10-26 21:46:21,251 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 30 [2018-10-26 21:46:21,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:46:21,252 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-10-26 21:46:21,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:46:21,252 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-10-26 21:46:21,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-26 21:46:21,253 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:21,253 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:46:21,253 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:21,253 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:21,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1523154087, now seen corresponding path program 1 times [2018-10-26 21:46:21,254 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:46:21,255 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/bin-2019/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 21:46:21,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-10-26 21:46:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:46:21,326 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:46:21,531 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-26 21:46:21,531 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:46:21,543 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:46:21,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-26 21:46:21,544 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 21:46:21,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 21:46:21,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-26 21:46:21,545 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 8 states. [2018-10-26 21:46:21,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:46:21,923 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2018-10-26 21:46:21,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 21:46:21,924 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-10-26 21:46:21,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:46:21,925 INFO L225 Difference]: With dead ends: 58 [2018-10-26 21:46:21,925 INFO L226 Difference]: Without dead ends: 35 [2018-10-26 21:46:21,925 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-10-26 21:46:21,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-26 21:46:21,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-26 21:46:21,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-26 21:46:21,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-10-26 21:46:21,929 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 31 [2018-10-26 21:46:21,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:46:21,930 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-10-26 21:46:21,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 21:46:21,930 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-10-26 21:46:21,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-26 21:46:21,931 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:21,931 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:46:21,931 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:21,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:21,931 INFO L82 PathProgramCache]: Analyzing trace with hash -907350383, now seen corresponding path program 1 times [2018-10-26 21:46:21,932 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:46:21,932 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/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 [2018-10-26 21:46:21,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:46:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:46:21,983 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:46:22,041 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-26 21:46:22,042 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:46:22,049 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:46:22,050 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 21:46:22,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:46:22,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:46:22,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:46:22,050 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 5 states. [2018-10-26 21:46:22,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:46:22,120 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-10-26 21:46:22,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:46:22,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-10-26 21:46:22,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:46:22,127 INFO L225 Difference]: With dead ends: 51 [2018-10-26 21:46:22,128 INFO L226 Difference]: Without dead ends: 35 [2018-10-26 21:46:22,128 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 21:46:22,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-26 21:46:22,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-26 21:46:22,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-26 21:46:22,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-10-26 21:46:22,131 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2018-10-26 21:46:22,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:46:22,132 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-10-26 21:46:22,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:46:22,132 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-10-26 21:46:22,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-26 21:46:22,134 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:22,134 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:46:22,134 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:22,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:22,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1716697009, now seen corresponding path program 1 times [2018-10-26 21:46:22,135 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:46:22,135 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/bin-2019/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-10-26 21:46:22,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:46:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:46:22,204 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:46:22,292 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-26 21:46:22,293 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:46:22,304 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:46:22,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-26 21:46:22,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 21:46:22,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 21:46:22,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-26 21:46:22,305 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 8 states. [2018-10-26 21:46:22,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:46:22,546 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-10-26 21:46:22,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 21:46:22,546 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-10-26 21:46:22,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:46:22,547 INFO L225 Difference]: With dead ends: 38 [2018-10-26 21:46:22,547 INFO L226 Difference]: Without dead ends: 35 [2018-10-26 21:46:22,548 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-10-26 21:46:22,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-26 21:46:22,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-26 21:46:22,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-26 21:46:22,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-26 21:46:22,551 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-10-26 21:46:22,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:46:22,552 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-26 21:46:22,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 21:46:22,552 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-26 21:46:22,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-26 21:46:22,553 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:22,553 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:46:22,553 INFO L424 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:22,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:22,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1627131194, now seen corresponding path program 1 times [2018-10-26 21:46:22,554 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:46:22,554 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/bin-2019/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-10-26 21:46:22,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:46:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:46:22,626 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:46:22,829 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-26 21:46:22,830 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:46:22,843 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:46:22,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-10-26 21:46:22,844 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-26 21:46:22,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-26 21:46:22,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-10-26 21:46:22,844 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 13 states. [2018-10-26 21:46:23,083 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-10-26 21:46:23,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:46:23,292 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-26 21:46:23,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-26 21:46:23,293 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2018-10-26 21:46:23,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:46:23,294 INFO L225 Difference]: With dead ends: 35 [2018-10-26 21:46:23,294 INFO L226 Difference]: Without dead ends: 0 [2018-10-26 21:46:23,294 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2018-10-26 21:46:23,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-26 21:46:23,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-26 21:46:23,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-26 21:46:23,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-26 21:46:23,295 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2018-10-26 21:46:23,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:46:23,295 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-26 21:46:23,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-26 21:46:23,296 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-26 21:46:23,296 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 21:46:23,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-26 21:46:23,493 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-10-26 21:46:23,493 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-10-26 21:46:23,493 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-26 21:46:23,493 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-26 21:46:23,493 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-26 21:46:23,493 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-26 21:46:23,493 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-26 21:46:23,494 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 79) no Hoare annotation was computed. [2018-10-26 21:46:23,494 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 65 84) the Hoare annotation is: true [2018-10-26 21:46:23,494 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 65 84) no Hoare annotation was computed. [2018-10-26 21:46:23,494 INFO L425 ceAbstractionStarter]: For program point L79(line 79) no Hoare annotation was computed. [2018-10-26 21:46:23,494 INFO L425 ceAbstractionStarter]: For program point L78(line 78) no Hoare annotation was computed. [2018-10-26 21:46:23,494 INFO L421 ceAbstractionStarter]: At program point L78-1(line 78) the Hoare annotation is: (and (= (_ +zero 8 24) main_~res~0) |main_#t~short9| (= main_~x~0 (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) main_~y~0)) [2018-10-26 21:46:23,494 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 65 84) no Hoare annotation was computed. [2018-10-26 21:46:23,494 INFO L425 ceAbstractionStarter]: For program point L78-2(line 78) no Hoare annotation was computed. [2018-10-26 21:46:23,494 INFO L421 ceAbstractionStarter]: At program point L75(line 75) the Hoare annotation is: (and (= main_~x~0 (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) main_~y~0)) [2018-10-26 21:46:23,495 INFO L425 ceAbstractionStarter]: For program point L75-1(line 75) no Hoare annotation was computed. [2018-10-26 21:46:23,495 INFO L425 ceAbstractionStarter]: For program point L78-4(lines 78 81) no Hoare annotation was computed. [2018-10-26 21:46:23,495 INFO L425 ceAbstractionStarter]: For program point fmax_floatEXIT(lines 42 51) no Hoare annotation was computed. [2018-10-26 21:46:23,495 INFO L428 ceAbstractionStarter]: At program point fmax_floatENTRY(lines 42 51) the Hoare annotation is: true [2018-10-26 21:46:23,495 INFO L425 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2018-10-26 21:46:23,495 INFO L425 ceAbstractionStarter]: For program point L50-2(line 50) no Hoare annotation was computed. [2018-10-26 21:46:23,495 INFO L421 ceAbstractionStarter]: At program point L47(line 47) the Hoare annotation is: (let ((.cse0 (= |fmax_float_#in~x| fmax_float_~x))) (or (and (= |fmax_float_#in~y| fmax_float_~y) .cse0) (and (exists ((__fpclassify_float_~w~0 (_ BitVec 32))) (and (not (= (bvadd __fpclassify_float_~w~0 (_ bv2147483648 32)) (_ bv0 32))) (= |fmax_float_#in~x| (fp ((_ extract 31 31) __fpclassify_float_~w~0) ((_ extract 30 23) __fpclassify_float_~w~0) ((_ extract 22 0) __fpclassify_float_~w~0))))) .cse0))) [2018-10-26 21:46:23,495 INFO L425 ceAbstractionStarter]: For program point L47-1(lines 47 49) no Hoare annotation was computed. [2018-10-26 21:46:23,495 INFO L421 ceAbstractionStarter]: At program point L43(line 43) the Hoare annotation is: (and (= |fmax_float_#in~y| fmax_float_~y) (= |fmax_float_#in~x| fmax_float_~x)) [2018-10-26 21:46:23,496 INFO L425 ceAbstractionStarter]: For program point L43-1(lines 43 45) no Hoare annotation was computed. [2018-10-26 21:46:23,496 INFO L425 ceAbstractionStarter]: For program point fmax_floatFINAL(lines 42 51) no Hoare annotation was computed. [2018-10-26 21:46:23,496 INFO L425 ceAbstractionStarter]: For program point L33(lines 33 39) no Hoare annotation was computed. [2018-10-26 21:46:23,496 INFO L425 ceAbstractionStarter]: For program point __fpclassify_floatFINAL(lines 19 40) no Hoare annotation was computed. [2018-10-26 21:46:23,496 INFO L425 ceAbstractionStarter]: For program point L36(lines 36 39) no Hoare annotation was computed. [2018-10-26 21:46:23,496 INFO L425 ceAbstractionStarter]: For program point L30(lines 30 39) no Hoare annotation was computed. [2018-10-26 21:46:23,496 INFO L425 ceAbstractionStarter]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2018-10-26 21:46:23,496 INFO L421 ceAbstractionStarter]: At program point L22-3(lines 22 26) the Hoare annotation is: (= __fpclassify_float_~x |__fpclassify_float_#in~x|) [2018-10-26 21:46:23,496 INFO L425 ceAbstractionStarter]: For program point L22-4(lines 19 40) no Hoare annotation was computed. [2018-10-26 21:46:23,496 INFO L428 ceAbstractionStarter]: At program point __fpclassify_floatENTRY(lines 19 40) the Hoare annotation is: true [2018-10-26 21:46:23,496 INFO L425 ceAbstractionStarter]: For program point __fpclassify_floatEXIT(lines 19 40) no Hoare annotation was computed. [2018-10-26 21:46:23,497 INFO L425 ceAbstractionStarter]: For program point __signbit_floatFINAL(lines 53 63) no Hoare annotation was computed. [2018-10-26 21:46:23,497 INFO L425 ceAbstractionStarter]: For program point L56-1(lines 56 60) no Hoare annotation was computed. [2018-10-26 21:46:23,497 INFO L421 ceAbstractionStarter]: At program point L56-3(lines 56 60) the Hoare annotation is: (= |__signbit_float_#in~x| __signbit_float_~x) [2018-10-26 21:46:23,497 INFO L425 ceAbstractionStarter]: For program point L56-4(lines 56 60) no Hoare annotation was computed. [2018-10-26 21:46:23,497 INFO L428 ceAbstractionStarter]: At program point __signbit_floatENTRY(lines 53 63) the Hoare annotation is: true [2018-10-26 21:46:23,497 INFO L425 ceAbstractionStarter]: For program point __signbit_floatEXIT(lines 53 63) no Hoare annotation was computed. [2018-10-26 21:46:23,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 09:46:23 BoogieIcfgContainer [2018-10-26 21:46:23,507 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 21:46:23,507 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 21:46:23,508 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 21:46:23,508 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 21:46:23,508 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:46:19" (3/4) ... [2018-10-26 21:46:23,511 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-26 21:46:23,517 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-26 21:46:23,517 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-26 21:46:23,518 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure fmax_float [2018-10-26 21:46:23,518 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2018-10-26 21:46:23,519 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_float [2018-10-26 21:46:23,524 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 42 nodes and edges [2018-10-26 21:46:23,524 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2018-10-26 21:46:23,525 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-10-26 21:46:23,550 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x == \old(x) [2018-10-26 21:46:23,551 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-10-26 21:46:23,575 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_3837aa22-b02b-4676-a359-2b7058e22d5c/bin-2019/utaipan/witness.graphml [2018-10-26 21:46:23,576 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 21:46:23,576 INFO L168 Benchmark]: Toolchain (without parser) took 5024.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 180.4 MB). Free memory was 953.2 MB in the beginning and 871.4 MB in the end (delta: 81.9 MB). Peak memory consumption was 262.2 MB. Max. memory is 11.5 GB. [2018-10-26 21:46:23,577 INFO L168 Benchmark]: CDTParser took 0.15 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. [2018-10-26 21:46:23,577 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.06 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-10-26 21:46:23,578 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.46 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:46:23,578 INFO L168 Benchmark]: Boogie Preprocessor took 48.56 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:46:23,578 INFO L168 Benchmark]: RCFGBuilder took 597.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 180.4 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -205.8 MB). Peak memory consumption was 28.1 MB. Max. memory is 11.5 GB. [2018-10-26 21:46:23,579 INFO L168 Benchmark]: TraceAbstraction took 4031.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 878.2 MB in the end (delta: 264.8 MB). Peak memory consumption was 264.8 MB. Max. memory is 11.5 GB. [2018-10-26 21:46:23,579 INFO L168 Benchmark]: Witness Printer took 68.29 ms. Allocated memory is still 1.2 GB. Free memory was 878.2 MB in the beginning and 871.4 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-10-26 21:46:23,581 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 233.06 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.46 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 48.56 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 597.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 180.4 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -205.8 MB). Peak memory consumption was 28.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4031.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 878.2 MB in the end (delta: 264.8 MB). Peak memory consumption was 264.8 MB. Max. memory is 11.5 GB. * Witness Printer took 68.29 ms. Allocated memory is still 1.2 GB. Free memory was 878.2 MB in the beginning and 871.4 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 79]: 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: 22]: Loop Invariant Derived loop invariant: x == \old(x) - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. SAFE Result, 3.9s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 2.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 296 SDtfs, 121 SDslu, 975 SDs, 0 SdLazy, 365 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 242 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 31 PreInvPairs, 38 NumberOfFragments, 69 HoareAnnotationTreeSize, 31 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 231 NumberOfCodeBlocks, 231 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 223 ConstructedInterpolants, 14 QuantifiedInterpolants, 20050 SizeOfPredicates, 29 NumberOfNonLiveVariables, 833 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 30/30 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...