./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1011b_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_411d89fe-fec3-4728-b85b-e86e77295329/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_411d89fe-fec3-4728-b85b-e86e77295329/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_411d89fe-fec3-4728-b85b-e86e77295329/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_411d89fe-fec3-4728-b85b-e86e77295329/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1011b_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_411d89fe-fec3-4728-b85b-e86e77295329/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_411d89fe-fec3-4728-b85b-e86e77295329/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 333c17c406c444dae1f6637e8d10f8cdd725cd45 ................................................................................................................................................................................................................................................................................................................. 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_411d89fe-fec3-4728-b85b-e86e77295329/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_411d89fe-fec3-4728-b85b-e86e77295329/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_411d89fe-fec3-4728-b85b-e86e77295329/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_411d89fe-fec3-4728-b85b-e86e77295329/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1011b_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_411d89fe-fec3-4728-b85b-e86e77295329/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_411d89fe-fec3-4728-b85b-e86e77295329/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 333c17c406c444dae1f6637e8d10f8cdd725cd45 .................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 17:12:23,707 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 17:12:23,708 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 17:12:23,714 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 17:12:23,715 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 17:12:23,715 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 17:12:23,716 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 17:12:23,717 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 17:12:23,717 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 17:12:23,718 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 17:12:23,718 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 17:12:23,718 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 17:12:23,719 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 17:12:23,719 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 17:12:23,720 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 17:12:23,720 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 17:12:23,720 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 17:12:23,721 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 17:12:23,722 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 17:12:23,723 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 17:12:23,724 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 17:12:23,724 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 17:12:23,725 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 17:12:23,725 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 17:12:23,725 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 17:12:23,726 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 17:12:23,726 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 17:12:23,727 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 17:12:23,727 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 17:12:23,728 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 17:12:23,728 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 17:12:23,728 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 17:12:23,728 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 17:12:23,728 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 17:12:23,729 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 17:12:23,729 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 17:12:23,729 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_411d89fe-fec3-4728-b85b-e86e77295329/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-08 17:12:23,736 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 17:12:23,736 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 17:12:23,737 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 17:12:23,737 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 17:12:23,737 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-08 17:12:23,737 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-08 17:12:23,737 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-08 17:12:23,737 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-08 17:12:23,737 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-08 17:12:23,737 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-08 17:12:23,737 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-08 17:12:23,737 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-08 17:12:23,737 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-08 17:12:23,738 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 17:12:23,738 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 17:12:23,738 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 17:12:23,738 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 17:12:23,738 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 17:12:23,738 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 17:12:23,738 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 17:12:23,738 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 17:12:23,738 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 17:12:23,738 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 17:12:23,739 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 17:12:23,739 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 17:12:23,739 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 17:12:23,739 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 17:12:23,739 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 17:12:23,739 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 17:12:23,739 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 17:12:23,739 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 17:12:23,739 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 17:12:23,739 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-08 17:12:23,739 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 17:12:23,739 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 17:12:23,740 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-08 17:12:23,740 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_411d89fe-fec3-4728-b85b-e86e77295329/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 -> 333c17c406c444dae1f6637e8d10f8cdd725cd45 [2018-12-08 17:12:23,757 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 17:12:23,763 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 17:12:23,765 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 17:12:23,766 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 17:12:23,766 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 17:12:23,767 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_411d89fe-fec3-4728-b85b-e86e77295329/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1011b_true-unreach-call.c [2018-12-08 17:12:23,801 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_411d89fe-fec3-4728-b85b-e86e77295329/bin-2019/utaipan/data/0b1adab60/2bf2807de4714b189a28f82ce5fc9770/FLAGb3a37b2ad [2018-12-08 17:12:24,096 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 17:12:24,097 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_411d89fe-fec3-4728-b85b-e86e77295329/sv-benchmarks/c/float-newlib/float_req_bl_1011b_true-unreach-call.c [2018-12-08 17:12:24,101 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_411d89fe-fec3-4728-b85b-e86e77295329/bin-2019/utaipan/data/0b1adab60/2bf2807de4714b189a28f82ce5fc9770/FLAGb3a37b2ad [2018-12-08 17:12:24,110 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_411d89fe-fec3-4728-b85b-e86e77295329/bin-2019/utaipan/data/0b1adab60/2bf2807de4714b189a28f82ce5fc9770 [2018-12-08 17:12:24,112 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 17:12:24,113 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 17:12:24,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 17:12:24,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 17:12:24,116 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 17:12:24,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 05:12:24" (1/1) ... [2018-12-08 17:12:24,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@706fcb08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:12:24, skipping insertion in model container [2018-12-08 17:12:24,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 05:12:24" (1/1) ... [2018-12-08 17:12:24,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 17:12:24,132 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 17:12:24,220 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 17:12:24,222 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 17:12:24,234 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 17:12:24,246 INFO L195 MainTranslator]: Completed translation [2018-12-08 17:12:24,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:12:24 WrapperNode [2018-12-08 17:12:24,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 17:12:24,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 17:12:24,247 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 17:12:24,247 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 17:12:24,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:12:24" (1/1) ... [2018-12-08 17:12:24,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:12:24" (1/1) ... [2018-12-08 17:12:24,260 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 17:12:24,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 17:12:24,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 17:12:24,261 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 17:12:24,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:12:24" (1/1) ... [2018-12-08 17:12:24,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:12:24" (1/1) ... [2018-12-08 17:12:24,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:12:24" (1/1) ... [2018-12-08 17:12:24,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:12:24" (1/1) ... [2018-12-08 17:12:24,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:12:24" (1/1) ... [2018-12-08 17:12:24,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:12:24" (1/1) ... [2018-12-08 17:12:24,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:12:24" (1/1) ... [2018-12-08 17:12:24,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 17:12:24,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 17:12:24,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 17:12:24,309 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 17:12:24,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:12:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_411d89fe-fec3-4728-b85b-e86e77295329/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 [2018-12-08 17:12:24,342 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 17:12:24,342 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 17:12:24,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-12-08 17:12:24,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-08 17:12:24,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 17:12:24,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 17:12:24,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-08 17:12:24,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 17:12:24,342 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-12-08 17:12:24,342 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-12-08 17:12:24,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 17:12:24,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 17:12:24,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-08 17:12:24,343 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-08 17:12:24,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-08 17:12:24,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 17:12:24,462 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 17:12:24,463 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-08 17:12:24,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 05:12:24 BoogieIcfgContainer [2018-12-08 17:12:24,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 17:12:24,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 17:12:24,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 17:12:24,465 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 17:12:24,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 05:12:24" (1/3) ... [2018-12-08 17:12:24,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b0abea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 05:12:24, skipping insertion in model container [2018-12-08 17:12:24,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:12:24" (2/3) ... [2018-12-08 17:12:24,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b0abea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 05:12:24, skipping insertion in model container [2018-12-08 17:12:24,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 05:12:24" (3/3) ... [2018-12-08 17:12:24,467 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1011b_true-unreach-call.c [2018-12-08 17:12:24,473 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 17:12:24,478 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 17:12:24,487 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 17:12:24,504 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 17:12:24,504 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 17:12:24,504 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 17:12:24,504 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 17:12:24,504 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 17:12:24,504 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 17:12:24,504 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 17:12:24,504 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 17:12:24,514 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-12-08 17:12:24,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-08 17:12:24,517 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 17:12:24,518 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 17:12:24,520 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 17:12:24,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:12:24,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1505277509, now seen corresponding path program 1 times [2018-12-08 17:12:24,525 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 17:12:24,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:12:24,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:12:24,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:12:24,552 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 17:12:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:12:24,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:12:24,593 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 17:12:24,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 17:12:24,593 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 17:12:24,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-08 17:12:24,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-08 17:12:24,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 17:12:24,604 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2018-12-08 17:12:24,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 17:12:24,616 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2018-12-08 17:12:24,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-08 17:12:24,617 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-12-08 17:12:24,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 17:12:24,621 INFO L225 Difference]: With dead ends: 56 [2018-12-08 17:12:24,622 INFO L226 Difference]: Without dead ends: 28 [2018-12-08 17:12:24,623 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 17:12:24,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-08 17:12:24,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-12-08 17:12:24,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-08 17:12:24,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-12-08 17:12:24,644 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 17 [2018-12-08 17:12:24,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 17:12:24,644 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-12-08 17:12:24,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-08 17:12:24,644 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-12-08 17:12:24,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-08 17:12:24,645 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 17:12:24,645 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 17:12:24,645 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 17:12:24,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:12:24,645 INFO L82 PathProgramCache]: Analyzing trace with hash -820328856, now seen corresponding path program 1 times [2018-12-08 17:12:24,645 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 17:12:24,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:12:24,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:12:24,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:12:24,646 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 17:12:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 17:12:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 17:12:24,682 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-08 17:12:24,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 05:12:24 BoogieIcfgContainer [2018-12-08 17:12:24,698 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 17:12:24,698 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 17:12:24,698 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 17:12:24,698 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 17:12:24,699 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 05:12:24" (3/4) ... [2018-12-08 17:12:24,701 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-08 17:12:24,701 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 17:12:24,701 INFO L168 Benchmark]: Toolchain (without parser) took 589.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 949.7 MB in the beginning and 1.1 GB in the end (delta: -128.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 11.5 GB. [2018-12-08 17:12:24,702 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 17:12:24,703 INFO L168 Benchmark]: CACSL2BoogieTranslator took 133.12 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 17:12:24,703 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.70 ms. Allocated memory is still 1.0 GB. Free memory was 939.0 MB in the beginning and 936.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-08 17:12:24,703 INFO L168 Benchmark]: Boogie Preprocessor took 48.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 936.3 MB in the beginning and 1.1 GB in the end (delta: -191.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2018-12-08 17:12:24,704 INFO L168 Benchmark]: RCFGBuilder took 153.93 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: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2018-12-08 17:12:24,704 INFO L168 Benchmark]: TraceAbstraction took 234.77 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: 31.4 MB). Peak memory consumption was 31.4 MB. Max. memory is 11.5 GB. [2018-12-08 17:12:24,704 INFO L168 Benchmark]: Witness Printer took 2.67 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. [2018-12-08 17:12:24,706 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 133.12 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.70 ms. Allocated memory is still 1.0 GB. Free memory was 939.0 MB in the beginning and 936.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 48.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 936.3 MB in the beginning and 1.1 GB in the end (delta: -191.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 153.93 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: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 234.77 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: 31.4 MB). Peak memory consumption was 31.4 MB. Max. memory is 11.5 GB. * Witness Printer took 2.67 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 50]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 49, overapproximation of someUnaryFLOAToperation at line 45, overapproximation of bitwiseAnd at line 21. Possible FailurePath: [L45] float x = -0.0f; [L46] CALL, EXPR fabs_float(x) VAL [\old(x)=14] [L13] __uint32_t ix; VAL [\old(x)=14, x=14] [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (ix) = gf_u.word [L20] ieee_float_shape_type sf_u; [L21] sf_u.word = (ix & 0x7fffffff) [L22] EXPR sf_u.value [L22] (x) = sf_u.value [L24] return x; VAL [\old(x)=14, \result=5, ix=12, x=5] [L46] RET, EXPR fabs_float(x) VAL [fabs_float(x)=5, x=14] [L46] float res = fabs_float(x); [L49] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=5, res == 0.0f && __signbit_float(res) == 0=0, x=14] [L49] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L50] __VERIFIER_error() VAL [res=5, x=14] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 32 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 256 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-08 17:12:25,958 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 17:12:25,959 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 17:12:25,965 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 17:12:25,965 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 17:12:25,965 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 17:12:25,966 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 17:12:25,967 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 17:12:25,967 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 17:12:25,968 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 17:12:25,968 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 17:12:25,968 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 17:12:25,969 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 17:12:25,969 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 17:12:25,970 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 17:12:25,970 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 17:12:25,970 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 17:12:25,971 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 17:12:25,972 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 17:12:25,973 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 17:12:25,974 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 17:12:25,974 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 17:12:25,975 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 17:12:25,975 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 17:12:25,975 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 17:12:25,976 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 17:12:25,976 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 17:12:25,977 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 17:12:25,977 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 17:12:25,978 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 17:12:25,978 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 17:12:25,978 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 17:12:25,978 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 17:12:25,978 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 17:12:25,979 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 17:12:25,979 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 17:12:25,979 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_411d89fe-fec3-4728-b85b-e86e77295329/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-08 17:12:25,986 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 17:12:25,987 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 17:12:25,987 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 17:12:25,987 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 17:12:25,987 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-08 17:12:25,987 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-08 17:12:25,988 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-08 17:12:25,988 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-08 17:12:25,988 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-08 17:12:25,988 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-08 17:12:25,988 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 17:12:25,988 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 17:12:25,988 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 17:12:25,988 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 17:12:25,989 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 17:12:25,989 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 17:12:25,989 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 17:12:25,989 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-08 17:12:25,989 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-08 17:12:25,989 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 17:12:25,989 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 17:12:25,989 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 17:12:25,989 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 17:12:25,989 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 17:12:25,990 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 17:12:25,990 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 17:12:25,990 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 17:12:25,990 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 17:12:25,990 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 17:12:25,990 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 17:12:25,990 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 17:12:25,990 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-08 17:12:25,990 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 17:12:25,990 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-08 17:12:25,990 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-08 17:12:25,990 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_411d89fe-fec3-4728-b85b-e86e77295329/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 -> 333c17c406c444dae1f6637e8d10f8cdd725cd45 [2018-12-08 17:12:26,009 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 17:12:26,018 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 17:12:26,021 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 17:12:26,022 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 17:12:26,022 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 17:12:26,023 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_411d89fe-fec3-4728-b85b-e86e77295329/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1011b_true-unreach-call.c [2018-12-08 17:12:26,064 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_411d89fe-fec3-4728-b85b-e86e77295329/bin-2019/utaipan/data/f09a7a684/15de631c84be424fb35c610affc18276/FLAG60193b652 [2018-12-08 17:12:26,448 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 17:12:26,449 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_411d89fe-fec3-4728-b85b-e86e77295329/sv-benchmarks/c/float-newlib/float_req_bl_1011b_true-unreach-call.c [2018-12-08 17:12:26,454 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_411d89fe-fec3-4728-b85b-e86e77295329/bin-2019/utaipan/data/f09a7a684/15de631c84be424fb35c610affc18276/FLAG60193b652 [2018-12-08 17:12:26,462 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_411d89fe-fec3-4728-b85b-e86e77295329/bin-2019/utaipan/data/f09a7a684/15de631c84be424fb35c610affc18276 [2018-12-08 17:12:26,463 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 17:12:26,464 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 17:12:26,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 17:12:26,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 17:12:26,467 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 17:12:26,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 05:12:26" (1/1) ... [2018-12-08 17:12:26,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@267733d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:12:26, skipping insertion in model container [2018-12-08 17:12:26,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 05:12:26" (1/1) ... [2018-12-08 17:12:26,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 17:12:26,486 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 17:12:26,586 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 17:12:26,589 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 17:12:26,603 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 17:12:26,622 INFO L195 MainTranslator]: Completed translation [2018-12-08 17:12:26,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:12:26 WrapperNode [2018-12-08 17:12:26,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 17:12:26,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 17:12:26,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 17:12:26,623 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 17:12:26,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:12:26" (1/1) ... [2018-12-08 17:12:26,634 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:12:26" (1/1) ... [2018-12-08 17:12:26,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 17:12:26,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 17:12:26,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 17:12:26,638 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 17:12:26,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:12:26" (1/1) ... [2018-12-08 17:12:26,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:12:26" (1/1) ... [2018-12-08 17:12:26,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:12:26" (1/1) ... [2018-12-08 17:12:26,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:12:26" (1/1) ... [2018-12-08 17:12:26,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:12:26" (1/1) ... [2018-12-08 17:12:26,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:12:26" (1/1) ... [2018-12-08 17:12:26,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:12:26" (1/1) ... [2018-12-08 17:12:26,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 17:12:26,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 17:12:26,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 17:12:26,659 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 17:12:26,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:12:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_411d89fe-fec3-4728-b85b-e86e77295329/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 [2018-12-08 17:12:26,729 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 17:12:26,730 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 17:12:26,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-12-08 17:12:26,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 17:12:26,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 17:12:26,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 17:12:26,730 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-12-08 17:12:26,730 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-12-08 17:12:26,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-08 17:12:26,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 17:12:26,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 17:12:26,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-12-08 17:12:26,730 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-08 17:12:26,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-08 17:12:26,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-08 17:12:26,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 17:12:26,827 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 17:12:26,859 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 17:12:26,865 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 17:12:26,865 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-08 17:12:26,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 05:12:26 BoogieIcfgContainer [2018-12-08 17:12:26,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 17:12:26,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 17:12:26,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 17:12:26,868 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 17:12:26,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 05:12:26" (1/3) ... [2018-12-08 17:12:26,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5857fba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 05:12:26, skipping insertion in model container [2018-12-08 17:12:26,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:12:26" (2/3) ... [2018-12-08 17:12:26,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5857fba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 05:12:26, skipping insertion in model container [2018-12-08 17:12:26,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 05:12:26" (3/3) ... [2018-12-08 17:12:26,869 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1011b_true-unreach-call.c [2018-12-08 17:12:26,875 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 17:12:26,879 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 17:12:26,887 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 17:12:26,903 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 17:12:26,903 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 17:12:26,903 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 17:12:26,904 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 17:12:26,904 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 17:12:26,904 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 17:12:26,904 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 17:12:26,904 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 17:12:26,904 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 17:12:26,914 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-12-08 17:12:26,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-08 17:12:26,918 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 17:12:26,918 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 17:12:26,919 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 17:12:26,922 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:12:26,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1505277509, now seen corresponding path program 1 times [2018-12-08 17:12:26,925 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 17:12:26,925 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_411d89fe-fec3-4728-b85b-e86e77295329/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 [2018-12-08 17:12:26,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:12:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:12:26,964 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:12:26,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:12:26,974 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 17:12:26,982 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 17:12:26,983 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 17:12:26,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-08 17:12:26,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-08 17:12:26,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 17:12:26,993 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2018-12-08 17:12:27,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 17:12:27,005 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2018-12-08 17:12:27,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-08 17:12:27,006 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-12-08 17:12:27,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 17:12:27,011 INFO L225 Difference]: With dead ends: 56 [2018-12-08 17:12:27,011 INFO L226 Difference]: Without dead ends: 28 [2018-12-08 17:12:27,013 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 17:12:27,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-08 17:12:27,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-12-08 17:12:27,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-08 17:12:27,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-12-08 17:12:27,033 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 17 [2018-12-08 17:12:27,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 17:12:27,033 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-12-08 17:12:27,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-08 17:12:27,034 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-12-08 17:12:27,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-08 17:12:27,034 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 17:12:27,034 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 17:12:27,034 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 17:12:27,034 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:12:27,034 INFO L82 PathProgramCache]: Analyzing trace with hash -820328856, now seen corresponding path program 1 times [2018-12-08 17:12:27,035 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 17:12:27,035 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_411d89fe-fec3-4728-b85b-e86e77295329/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-12-08 17:12:27,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:12:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:12:27,068 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:12:27,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:12:27,205 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 17:12:27,211 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 17:12:27,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-08 17:12:27,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-08 17:12:27,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-08 17:12:27,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-08 17:12:27,213 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 9 states. [2018-12-08 17:12:27,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 17:12:27,445 INFO L93 Difference]: Finished difference Result 31 states and 30 transitions. [2018-12-08 17:12:27,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-08 17:12:27,445 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2018-12-08 17:12:27,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 17:12:27,446 INFO L225 Difference]: With dead ends: 31 [2018-12-08 17:12:27,446 INFO L226 Difference]: Without dead ends: 28 [2018-12-08 17:12:27,447 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2018-12-08 17:12:27,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-08 17:12:27,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-12-08 17:12:27,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-08 17:12:27,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2018-12-08 17:12:27,449 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 19 [2018-12-08 17:12:27,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 17:12:27,450 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2018-12-08 17:12:27,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-08 17:12:27,450 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2018-12-08 17:12:27,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-08 17:12:27,450 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 17:12:27,450 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 17:12:27,450 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 17:12:27,451 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:12:27,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1040391693, now seen corresponding path program 1 times [2018-12-08 17:12:27,451 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 17:12:27,451 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_411d89fe-fec3-4728-b85b-e86e77295329/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-12-08 17:12:27,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:12:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:12:27,493 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:12:27,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:12:27,776 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 17:12:27,786 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 17:12:27,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-12-08 17:12:27,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-08 17:12:27,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-08 17:12:27,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-12-08 17:12:27,788 INFO L87 Difference]: Start difference. First operand 28 states and 27 transitions. Second operand 14 states. [2018-12-08 17:12:28,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 17:12:28,337 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2018-12-08 17:12:28,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-08 17:12:28,338 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 27 [2018-12-08 17:12:28,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 17:12:28,338 INFO L225 Difference]: With dead ends: 28 [2018-12-08 17:12:28,338 INFO L226 Difference]: Without dead ends: 0 [2018-12-08 17:12:28,338 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2018-12-08 17:12:28,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-08 17:12:28,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-08 17:12:28,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-08 17:12:28,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-08 17:12:28,339 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-12-08 17:12:28,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 17:12:28,339 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 17:12:28,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-08 17:12:28,339 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-08 17:12:28,339 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-08 17:12:28,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-08 17:12:28,388 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-08 17:12:28,388 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-08 17:12:28,388 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-08 17:12:28,388 INFO L448 ceAbstractionStarter]: For program point fabs_floatFINAL(lines 12 25) no Hoare annotation was computed. [2018-12-08 17:12:28,388 INFO L448 ceAbstractionStarter]: For program point fabs_floatEXIT(lines 12 25) no Hoare annotation was computed. [2018-12-08 17:12:28,388 INFO L451 ceAbstractionStarter]: At program point fabs_floatENTRY(lines 12 25) the Hoare annotation is: true [2018-12-08 17:12:28,389 INFO L448 ceAbstractionStarter]: For program point L19(lines 19 23) no Hoare annotation was computed. [2018-12-08 17:12:28,389 INFO L448 ceAbstractionStarter]: For program point L19-1(lines 12 25) no Hoare annotation was computed. [2018-12-08 17:12:28,389 INFO L448 ceAbstractionStarter]: For program point L19-2(lines 19 23) no Hoare annotation was computed. [2018-12-08 17:12:28,389 INFO L448 ceAbstractionStarter]: For program point L14-1(lines 14 18) no Hoare annotation was computed. [2018-12-08 17:12:28,389 INFO L444 ceAbstractionStarter]: At program point L14-2(lines 14 18) the Hoare annotation is: (= fabs_float_~x |fabs_float_#in~x|) [2018-12-08 17:12:28,389 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-08 17:12:28,389 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-08 17:12:28,389 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-08 17:12:28,389 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-08 17:12:28,389 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 39 55) the Hoare annotation is: true [2018-12-08 17:12:28,389 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 39 55) no Hoare annotation was computed. [2018-12-08 17:12:28,389 INFO L448 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2018-12-08 17:12:28,389 INFO L448 ceAbstractionStarter]: For program point L49(line 49) no Hoare annotation was computed. [2018-12-08 17:12:28,390 INFO L444 ceAbstractionStarter]: At program point L49-1(line 49) the Hoare annotation is: (and |main_#t~short8| (= main_~x~0 (fp.neg (_ +zero 8 24))) (exists ((fabs_float_~ix~0 (_ BitVec 32))) (and (= (fp ((_ extract 31 31) fabs_float_~ix~0) ((_ extract 30 23) fabs_float_~ix~0) ((_ extract 22 0) fabs_float_~ix~0)) (fp.neg (_ +zero 8 24))) (= main_~res~0 (let ((.cse0 (bvand (_ bv2147483647 32) fabs_float_~ix~0))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0))))))) [2018-12-08 17:12:28,390 INFO L448 ceAbstractionStarter]: For program point L49-2(line 49) no Hoare annotation was computed. [2018-12-08 17:12:28,390 INFO L444 ceAbstractionStarter]: At program point L46(line 46) the Hoare annotation is: (= main_~x~0 (fp.neg (_ +zero 8 24))) [2018-12-08 17:12:28,390 INFO L448 ceAbstractionStarter]: For program point L46-1(line 46) no Hoare annotation was computed. [2018-12-08 17:12:28,390 INFO L448 ceAbstractionStarter]: For program point L49-4(lines 49 52) no Hoare annotation was computed. [2018-12-08 17:12:28,390 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 39 55) no Hoare annotation was computed. [2018-12-08 17:12:28,390 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 50) no Hoare annotation was computed. [2018-12-08 17:12:28,390 INFO L448 ceAbstractionStarter]: For program point L30-1(lines 30 34) no Hoare annotation was computed. [2018-12-08 17:12:28,390 INFO L444 ceAbstractionStarter]: At program point L30-2(lines 30 34) the Hoare annotation is: (= |__signbit_float_#in~x| __signbit_float_~x) [2018-12-08 17:12:28,390 INFO L448 ceAbstractionStarter]: For program point L30-3(lines 30 34) no Hoare annotation was computed. [2018-12-08 17:12:28,390 INFO L448 ceAbstractionStarter]: For program point __signbit_floatFINAL(lines 27 37) no Hoare annotation was computed. [2018-12-08 17:12:28,390 INFO L451 ceAbstractionStarter]: At program point __signbit_floatENTRY(lines 27 37) the Hoare annotation is: true [2018-12-08 17:12:28,390 INFO L448 ceAbstractionStarter]: For program point __signbit_floatEXIT(lines 27 37) no Hoare annotation was computed. [2018-12-08 17:12:28,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 05:12:28 BoogieIcfgContainer [2018-12-08 17:12:28,398 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 17:12:28,399 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 17:12:28,399 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 17:12:28,399 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 17:12:28,399 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 05:12:26" (3/4) ... [2018-12-08 17:12:28,401 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-08 17:12:28,406 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-08 17:12:28,406 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fabs_float [2018-12-08 17:12:28,406 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-08 17:12:28,407 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_float [2018-12-08 17:12:28,409 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2018-12-08 17:12:28,410 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-12-08 17:12:28,410 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-08 17:12:28,426 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x == \old(x) [2018-12-08 17:12:28,427 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-12-08 17:12:28,438 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_411d89fe-fec3-4728-b85b-e86e77295329/bin-2019/utaipan/witness.graphml [2018-12-08 17:12:28,439 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 17:12:28,439 INFO L168 Benchmark]: Toolchain (without parser) took 1975.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 943.4 MB in the beginning and 923.7 MB in the end (delta: 19.7 MB). Peak memory consumption was 140.8 MB. Max. memory is 11.5 GB. [2018-12-08 17:12:28,440 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 17:12:28,440 INFO L168 Benchmark]: CACSL2BoogieTranslator took 157.61 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 17:12:28,441 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.25 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-08 17:12:28,441 INFO L168 Benchmark]: Boogie Preprocessor took 20.39 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 17:12:28,441 INFO L168 Benchmark]: RCFGBuilder took 206.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -163.3 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. [2018-12-08 17:12:28,441 INFO L168 Benchmark]: TraceAbstraction took 1532.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 930.6 MB in the end (delta: 159.9 MB). Peak memory consumption was 159.9 MB. Max. memory is 11.5 GB. [2018-12-08 17:12:28,442 INFO L168 Benchmark]: Witness Printer took 40.11 ms. Allocated memory is still 1.2 GB. Free memory was 930.6 MB in the beginning and 923.7 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2018-12-08 17:12:28,444 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 157.61 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 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 15.25 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.39 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 206.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -163.3 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1532.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 930.6 MB in the end (delta: 159.9 MB). Peak memory consumption was 159.9 MB. Max. memory is 11.5 GB. * Witness Printer took 40.11 ms. Allocated memory is still 1.2 GB. Free memory was 930.6 MB in the beginning and 923.7 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: 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: 30]: Loop Invariant Derived loop invariant: \old(x) == x - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: x == \old(x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. SAFE Result, 1.4s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 68 SDtfs, 27 SDslu, 277 SDs, 0 SdLazy, 158 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 12 PreInvPairs, 15 NumberOfFragments, 49 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 60 ConstructedInterpolants, 14 QuantifiedInterpolants, 11832 SizeOfPredicates, 13 NumberOfNonLiveVariables, 172 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...