./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1091_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_33512df0-afe4-4a1d-9cee-be0126108632/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_33512df0-afe4-4a1d-9cee-be0126108632/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_33512df0-afe4-4a1d-9cee-be0126108632/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_33512df0-afe4-4a1d-9cee-be0126108632/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1091_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_33512df0-afe4-4a1d-9cee-be0126108632/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_33512df0-afe4-4a1d-9cee-be0126108632/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 84dba58cac25505e0eb3c404a47a071a268de901 ............................................................................................................................................................................................................................................................................................................................. 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_33512df0-afe4-4a1d-9cee-be0126108632/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_33512df0-afe4-4a1d-9cee-be0126108632/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_33512df0-afe4-4a1d-9cee-be0126108632/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_33512df0-afe4-4a1d-9cee-be0126108632/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1091_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_33512df0-afe4-4a1d-9cee-be0126108632/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_33512df0-afe4-4a1d-9cee-be0126108632/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 84dba58cac25505e0eb3c404a47a071a268de901 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 19:14:54,217 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 19:14:54,218 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 19:14:54,226 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 19:14:54,226 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 19:14:54,227 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 19:14:54,228 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 19:14:54,229 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 19:14:54,230 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 19:14:54,231 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 19:14:54,231 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 19:14:54,231 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 19:14:54,232 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 19:14:54,233 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 19:14:54,233 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 19:14:54,234 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 19:14:54,234 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 19:14:54,235 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 19:14:54,236 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 19:14:54,237 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 19:14:54,238 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 19:14:54,238 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 19:14:54,240 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 19:14:54,240 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 19:14:54,240 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 19:14:54,241 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 19:14:54,241 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 19:14:54,242 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 19:14:54,242 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 19:14:54,243 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 19:14:54,243 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 19:14:54,244 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 19:14:54,244 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 19:14:54,244 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 19:14:54,245 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 19:14:54,245 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 19:14:54,245 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_33512df0-afe4-4a1d-9cee-be0126108632/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 19:14:54,255 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 19:14:54,255 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 19:14:54,256 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 19:14:54,256 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 19:14:54,256 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 19:14:54,256 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 19:14:54,257 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 19:14:54,257 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 19:14:54,257 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 19:14:54,257 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 19:14:54,257 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 19:14:54,257 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 19:14:54,257 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 19:14:54,258 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 19:14:54,258 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 19:14:54,258 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 19:14:54,259 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 19:14:54,259 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 19:14:54,259 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 19:14:54,259 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 19:14:54,259 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 19:14:54,259 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 19:14:54,259 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 19:14:54,260 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 19:14:54,260 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 19:14:54,260 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 19:14:54,260 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 19:14:54,260 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 19:14:54,260 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 19:14:54,261 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 19:14:54,261 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 19:14:54,261 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 19:14:54,261 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 19:14:54,261 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 19:14:54,261 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 19:14:54,261 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 19:14:54,262 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_33512df0-afe4-4a1d-9cee-be0126108632/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 -> 84dba58cac25505e0eb3c404a47a071a268de901 [2018-12-09 19:14:54,282 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 19:14:54,291 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 19:14:54,294 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 19:14:54,295 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 19:14:54,295 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 19:14:54,296 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_33512df0-afe4-4a1d-9cee-be0126108632/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1091_true-unreach-call.c [2018-12-09 19:14:54,336 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_33512df0-afe4-4a1d-9cee-be0126108632/bin-2019/utaipan/data/8b46c60f8/781ba5d03a644165bf081d8de31b70e4/FLAGf13efba6c [2018-12-09 19:14:54,710 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 19:14:54,710 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_33512df0-afe4-4a1d-9cee-be0126108632/sv-benchmarks/c/float-newlib/double_req_bl_1091_true-unreach-call.c [2018-12-09 19:14:54,714 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_33512df0-afe4-4a1d-9cee-be0126108632/bin-2019/utaipan/data/8b46c60f8/781ba5d03a644165bf081d8de31b70e4/FLAGf13efba6c [2018-12-09 19:14:55,086 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_33512df0-afe4-4a1d-9cee-be0126108632/bin-2019/utaipan/data/8b46c60f8/781ba5d03a644165bf081d8de31b70e4 [2018-12-09 19:14:55,089 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 19:14:55,090 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 19:14:55,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 19:14:55,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 19:14:55,094 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 19:14:55,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:14:55" (1/1) ... [2018-12-09 19:14:55,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73600ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:55, skipping insertion in model container [2018-12-09 19:14:55,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:14:55" (1/1) ... [2018-12-09 19:14:55,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 19:14:55,116 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 19:14:55,223 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:14:55,226 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 19:14:55,247 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:14:55,259 INFO L195 MainTranslator]: Completed translation [2018-12-09 19:14:55,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:55 WrapperNode [2018-12-09 19:14:55,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 19:14:55,259 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 19:14:55,259 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 19:14:55,259 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 19:14:55,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:55" (1/1) ... [2018-12-09 19:14:55,269 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:55" (1/1) ... [2018-12-09 19:14:55,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 19:14:55,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 19:14:55,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 19:14:55,304 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 19:14:55,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:55" (1/1) ... [2018-12-09 19:14:55,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:55" (1/1) ... [2018-12-09 19:14:55,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:55" (1/1) ... [2018-12-09 19:14:55,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:55" (1/1) ... [2018-12-09 19:14:55,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:55" (1/1) ... [2018-12-09 19:14:55,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:55" (1/1) ... [2018-12-09 19:14:55,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:55" (1/1) ... [2018-12-09 19:14:55,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 19:14:55,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 19:14:55,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 19:14:55,328 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 19:14:55,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_33512df0-afe4-4a1d-9cee-be0126108632/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 [2018-12-09 19:14:55,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-12-09 19:14:55,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 19:14:55,358 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-12-09 19:14:55,358 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-12-09 19:14:55,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 19:14:55,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 19:14:55,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-09 19:14:55,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 19:14:55,359 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2018-12-09 19:14:55,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2018-12-09 19:14:55,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 19:14:55,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 19:14:55,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 19:14:55,359 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 19:14:55,359 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 19:14:55,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 19:14:55,516 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 19:14:55,516 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-09 19:14:55,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:14:55 BoogieIcfgContainer [2018-12-09 19:14:55,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 19:14:55,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 19:14:55,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 19:14:55,518 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 19:14:55,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:14:55" (1/3) ... [2018-12-09 19:14:55,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a589ca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:14:55, skipping insertion in model container [2018-12-09 19:14:55,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:55" (2/3) ... [2018-12-09 19:14:55,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a589ca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:14:55, skipping insertion in model container [2018-12-09 19:14:55,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:14:55" (3/3) ... [2018-12-09 19:14:55,520 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091_true-unreach-call.c [2018-12-09 19:14:55,526 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 19:14:55,530 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 19:14:55,540 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 19:14:55,558 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 19:14:55,558 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 19:14:55,558 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 19:14:55,558 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 19:14:55,558 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 19:14:55,558 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 19:14:55,558 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 19:14:55,559 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 19:14:55,569 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2018-12-09 19:14:55,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 19:14:55,572 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:14:55,573 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:14:55,574 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:14:55,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:14:55,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1881433434, now seen corresponding path program 1 times [2018-12-09 19:14:55,578 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:14:55,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:14:55,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:14:55,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:14:55,606 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:14:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:14:55,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:14:55,655 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:14:55,655 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 19:14:55,655 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:14:55,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 19:14:55,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 19:14:55,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 19:14:55,667 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2018-12-09 19:14:55,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:14:55,680 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2018-12-09 19:14:55,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 19:14:55,681 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2018-12-09 19:14:55,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:14:55,687 INFO L225 Difference]: With dead ends: 86 [2018-12-09 19:14:55,687 INFO L226 Difference]: Without dead ends: 43 [2018-12-09 19:14:55,689 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 [2018-12-09 19:14:55,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-09 19:14:55,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-09 19:14:55,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-09 19:14:55,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2018-12-09 19:14:55,712 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2018-12-09 19:14:55,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:14:55,712 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2018-12-09 19:14:55,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 19:14:55,712 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2018-12-09 19:14:55,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-09 19:14:55,713 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:14:55,713 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] [2018-12-09 19:14:55,713 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:14:55,713 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:14:55,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1135906069, now seen corresponding path program 1 times [2018-12-09 19:14:55,713 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:14:55,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:14:55,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:14:55,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:14:55,714 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:14:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 19:14:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 19:14:55,769 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 19:14:55,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:14:55 BoogieIcfgContainer [2018-12-09 19:14:55,787 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 19:14:55,787 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 19:14:55,787 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 19:14:55,787 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 19:14:55,788 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:14:55" (3/4) ... [2018-12-09 19:14:55,790 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 19:14:55,790 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 19:14:55,790 INFO L168 Benchmark]: Toolchain (without parser) took 700.61 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.1 MB). Free memory was 949.7 MB in the beginning and 1.0 GB in the end (delta: -86.3 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. [2018-12-09 19:14:55,791 INFO L168 Benchmark]: CDTParser took 0.16 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. [2018-12-09 19:14:55,791 INFO L168 Benchmark]: CACSL2BoogieTranslator took 168.19 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 936.3 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-12-09 19:14:55,792 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.51 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.1 MB). Free memory was 936.3 MB in the beginning and 1.1 GB in the end (delta: -163.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. [2018-12-09 19:14:55,792 INFO L168 Benchmark]: Boogie Preprocessor took 24.06 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-09 19:14:55,793 INFO L168 Benchmark]: RCFGBuilder took 188.10 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. [2018-12-09 19:14:55,793 INFO L168 Benchmark]: TraceAbstraction took 270.23 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 11.5 GB. [2018-12-09 19:14:55,793 INFO L168 Benchmark]: Witness Printer took 2.67 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:14:55,795 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 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 168.19 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 936.3 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.51 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.1 MB). Free memory was 936.3 MB in the beginning and 1.1 GB in the end (delta: -163.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.06 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 188.10 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 270.23 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 11.5 GB. * Witness Printer took 2.67 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 95]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 41, overapproximation of bitwiseOr at line 42, overapproximation of someBinaryArithmeticDOUBLEoperation at line 90, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 15. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; VAL [\old(huge_ceil)=10737418244, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L90] double x = 0.0 / 0.0; VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L91] CALL, EXPR ceil_double(x) VAL [\old(x)=10737418245, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L20] __int32_t i0, i1, j0; [L21] __uint32_t i, j; VAL [\old(x)=10737418245, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=10737418245] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [\old(x)=10737418245, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-2147483648, i1=-2147483648, x=10737418245] [L29] COND TRUE j0 < 20 VAL [\old(x)=10737418245, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-2147483648, i1=-2147483648, j0=0, x=10737418245] [L30] COND FALSE !(j0 < 0) [L41] i = (0x000fffff) >> j0 VAL [\old(x)=10737418245, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-2147483648, i1=-2147483648, j0=0, x=10737418245] [L42] COND TRUE ((i0 & i) | i1) == 0 [L43] return x; VAL [\old(x)=10737418245, \result=10737418245, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-2147483648, i1=-2147483648, j0=0, x=10737418245] [L91] RET, EXPR ceil_double(x) VAL [ceil_double(x)=10737418245, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=10737418245] [L91] double res = ceil_double(x); [L94] CALL, EXPR isnan_double(res) VAL [\old(x)=10737418245, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L15] return x != x; VAL [\old(x)=10737418245, \result=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=10737418245] [L94] RET, EXPR isnan_double(res) VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, isnan_double(res)=0, res=10737418245, x=10737418245] [L94] COND TRUE !isnan_double(res) [L95] __VERIFIER_error() VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=10737418245, x=10737418245] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 61 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=47occurred 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, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 484 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 [2018-12-09 19:14:57,075 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 19:14:57,076 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 19:14:57,082 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 19:14:57,082 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 19:14:57,082 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 19:14:57,083 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 19:14:57,084 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 19:14:57,084 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 19:14:57,085 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 19:14:57,085 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 19:14:57,085 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 19:14:57,086 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 19:14:57,086 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 19:14:57,087 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 19:14:57,087 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 19:14:57,087 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 19:14:57,088 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 19:14:57,089 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 19:14:57,090 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 19:14:57,090 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 19:14:57,091 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 19:14:57,092 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 19:14:57,092 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 19:14:57,092 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 19:14:57,093 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 19:14:57,093 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 19:14:57,093 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 19:14:57,094 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 19:14:57,094 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 19:14:57,094 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 19:14:57,095 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 19:14:57,095 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 19:14:57,095 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 19:14:57,095 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 19:14:57,096 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 19:14:57,096 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_33512df0-afe4-4a1d-9cee-be0126108632/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-09 19:14:57,103 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 19:14:57,103 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 19:14:57,104 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 19:14:57,104 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 19:14:57,104 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 19:14:57,104 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 19:14:57,104 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 19:14:57,104 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 19:14:57,104 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 19:14:57,104 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 19:14:57,105 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 19:14:57,105 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 19:14:57,105 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 19:14:57,105 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 19:14:57,105 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 19:14:57,105 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 19:14:57,105 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 19:14:57,105 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 19:14:57,105 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 19:14:57,105 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 19:14:57,105 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 19:14:57,106 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 19:14:57,106 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 19:14:57,106 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 19:14:57,106 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 19:14:57,106 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 19:14:57,106 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 19:14:57,106 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 19:14:57,106 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 19:14:57,106 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 19:14:57,106 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 19:14:57,106 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-09 19:14:57,106 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 19:14:57,106 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 19:14:57,107 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 19:14:57,107 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_33512df0-afe4-4a1d-9cee-be0126108632/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 -> 84dba58cac25505e0eb3c404a47a071a268de901 [2018-12-09 19:14:57,124 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 19:14:57,131 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 19:14:57,133 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 19:14:57,134 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 19:14:57,134 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 19:14:57,135 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_33512df0-afe4-4a1d-9cee-be0126108632/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1091_true-unreach-call.c [2018-12-09 19:14:57,169 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_33512df0-afe4-4a1d-9cee-be0126108632/bin-2019/utaipan/data/b8d78c9f6/8ab13e8f14514b5e81e1b09b8c627262/FLAGcc219cd41 [2018-12-09 19:14:57,535 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 19:14:57,535 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_33512df0-afe4-4a1d-9cee-be0126108632/sv-benchmarks/c/float-newlib/double_req_bl_1091_true-unreach-call.c [2018-12-09 19:14:57,539 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_33512df0-afe4-4a1d-9cee-be0126108632/bin-2019/utaipan/data/b8d78c9f6/8ab13e8f14514b5e81e1b09b8c627262/FLAGcc219cd41 [2018-12-09 19:14:57,912 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_33512df0-afe4-4a1d-9cee-be0126108632/bin-2019/utaipan/data/b8d78c9f6/8ab13e8f14514b5e81e1b09b8c627262 [2018-12-09 19:14:57,915 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 19:14:57,916 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 19:14:57,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 19:14:57,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 19:14:57,920 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 19:14:57,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:14:57" (1/1) ... [2018-12-09 19:14:57,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3832628d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:57, skipping insertion in model container [2018-12-09 19:14:57,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:14:57" (1/1) ... [2018-12-09 19:14:57,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 19:14:57,945 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 19:14:58,047 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:14:58,051 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 19:14:58,069 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:14:58,086 INFO L195 MainTranslator]: Completed translation [2018-12-09 19:14:58,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:58 WrapperNode [2018-12-09 19:14:58,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 19:14:58,087 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 19:14:58,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 19:14:58,087 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 19:14:58,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:58" (1/1) ... [2018-12-09 19:14:58,098 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:58" (1/1) ... [2018-12-09 19:14:58,103 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 19:14:58,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 19:14:58,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 19:14:58,103 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 19:14:58,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:58" (1/1) ... [2018-12-09 19:14:58,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:58" (1/1) ... [2018-12-09 19:14:58,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:58" (1/1) ... [2018-12-09 19:14:58,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:58" (1/1) ... [2018-12-09 19:14:58,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:58" (1/1) ... [2018-12-09 19:14:58,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:58" (1/1) ... [2018-12-09 19:14:58,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:58" (1/1) ... [2018-12-09 19:14:58,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 19:14:58,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 19:14:58,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 19:14:58,158 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 19:14:58,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_33512df0-afe4-4a1d-9cee-be0126108632/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 [2018-12-09 19:14:58,189 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-12-09 19:14:58,189 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-12-09 19:14:58,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-12-09 19:14:58,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 19:14:58,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 19:14:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 19:14:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-09 19:14:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-12-09 19:14:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2018-12-09 19:14:58,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2018-12-09 19:14:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 19:14:58,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 19:14:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 19:14:58,190 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 19:14:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-09 19:14:58,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 19:14:58,361 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:14:59,207 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 19:14:59,207 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-09 19:14:59,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:14:59 BoogieIcfgContainer [2018-12-09 19:14:59,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 19:14:59,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 19:14:59,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 19:14:59,209 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 19:14:59,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:14:57" (1/3) ... [2018-12-09 19:14:59,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37379bd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:14:59, skipping insertion in model container [2018-12-09 19:14:59,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:14:58" (2/3) ... [2018-12-09 19:14:59,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37379bd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:14:59, skipping insertion in model container [2018-12-09 19:14:59,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:14:59" (3/3) ... [2018-12-09 19:14:59,211 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091_true-unreach-call.c [2018-12-09 19:14:59,216 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 19:14:59,220 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 19:14:59,229 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 19:14:59,245 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 19:14:59,245 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 19:14:59,245 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 19:14:59,245 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 19:14:59,245 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 19:14:59,245 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 19:14:59,246 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 19:14:59,246 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 19:14:59,246 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 19:14:59,255 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-12-09 19:14:59,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-09 19:14:59,258 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:14:59,259 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] [2018-12-09 19:14:59,260 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:14:59,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:14:59,263 INFO L82 PathProgramCache]: Analyzing trace with hash -645750269, now seen corresponding path program 1 times [2018-12-09 19:14:59,265 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 19:14:59,265 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_33512df0-afe4-4a1d-9cee-be0126108632/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 [2018-12-09 19:14:59,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:14:59,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:14:59,311 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:14:59,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:14:59,326 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 19:14:59,335 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:14:59,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 19:14:59,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 19:14:59,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 19:14:59,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 19:14:59,346 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 2 states. [2018-12-09 19:14:59,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:14:59,358 INFO L93 Difference]: Finished difference Result 84 states and 122 transitions. [2018-12-09 19:14:59,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 19:14:59,359 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-12-09 19:14:59,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:14:59,368 INFO L225 Difference]: With dead ends: 84 [2018-12-09 19:14:59,368 INFO L226 Difference]: Without dead ends: 42 [2018-12-09 19:14:59,371 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 19:14:59,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-09 19:14:59,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-12-09 19:14:59,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-12-09 19:14:59,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 56 transitions. [2018-12-09 19:14:59,399 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 56 transitions. Word has length 22 [2018-12-09 19:14:59,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:14:59,400 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 56 transitions. [2018-12-09 19:14:59,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 19:14:59,400 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 56 transitions. [2018-12-09 19:14:59,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 19:14:59,401 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:14:59,401 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:14:59,401 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:14:59,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:14:59,402 INFO L82 PathProgramCache]: Analyzing trace with hash 938296292, now seen corresponding path program 1 times [2018-12-09 19:14:59,402 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 19:14:59,402 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_33512df0-afe4-4a1d-9cee-be0126108632/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 [2018-12-09 19:14:59,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:14:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:14:59,450 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:14:59,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:14:59,574 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 19:14:59,581 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:14:59,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-09 19:14:59,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 19:14:59,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 19:14:59,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-09 19:14:59,582 INFO L87 Difference]: Start difference. First operand 42 states and 56 transitions. Second operand 9 states. [2018-12-09 19:15:00,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:15:00,874 INFO L93 Difference]: Finished difference Result 51 states and 65 transitions. [2018-12-09 19:15:00,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 19:15:00,875 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2018-12-09 19:15:00,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:15:00,876 INFO L225 Difference]: With dead ends: 51 [2018-12-09 19:15:00,876 INFO L226 Difference]: Without dead ends: 44 [2018-12-09 19:15:00,877 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-12-09 19:15:00,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-09 19:15:00,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2018-12-09 19:15:00,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-12-09 19:15:00,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2018-12-09 19:15:00,883 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 23 [2018-12-09 19:15:00,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:15:00,883 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2018-12-09 19:15:00,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 19:15:00,883 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2018-12-09 19:15:00,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 19:15:00,884 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:15:00,884 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:15:00,884 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:15:00,884 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:15:00,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1029166427, now seen corresponding path program 1 times [2018-12-09 19:15:00,885 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 19:15:00,885 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_33512df0-afe4-4a1d-9cee-be0126108632/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 [2018-12-09 19:15:00,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:15:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:15:00,951 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:15:01,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:15:01,701 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 19:15:01,711 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:15:01,711 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-09 19:15:01,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 19:15:01,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 19:15:01,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-09 19:15:01,711 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand 9 states. [2018-12-09 19:15:03,593 WARN L180 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-12-09 19:15:05,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:15:05,181 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2018-12-09 19:15:05,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 19:15:05,182 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2018-12-09 19:15:05,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:15:05,183 INFO L225 Difference]: With dead ends: 49 [2018-12-09 19:15:05,183 INFO L226 Difference]: Without dead ends: 41 [2018-12-09 19:15:05,183 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-12-09 19:15:05,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-09 19:15:05,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-09 19:15:05,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-09 19:15:05,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2018-12-09 19:15:05,186 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 23 [2018-12-09 19:15:05,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:15:05,186 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2018-12-09 19:15:05,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 19:15:05,186 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2018-12-09 19:15:05,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 19:15:05,187 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:15:05,187 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] [2018-12-09 19:15:05,187 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:15:05,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:15:05,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1513115684, now seen corresponding path program 1 times [2018-12-09 19:15:05,188 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 19:15:05,188 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_33512df0-afe4-4a1d-9cee-be0126108632/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 [2018-12-09 19:15:05,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:15:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:15:05,285 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:15:05,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:15:05,398 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 19:15:05,406 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:15:05,406 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 19:15:05,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 19:15:05,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 19:15:05,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-09 19:15:05,407 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand 7 states. [2018-12-09 19:15:07,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:15:07,284 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2018-12-09 19:15:07,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-09 19:15:07,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2018-12-09 19:15:07,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:15:07,285 INFO L225 Difference]: With dead ends: 67 [2018-12-09 19:15:07,286 INFO L226 Difference]: Without dead ends: 40 [2018-12-09 19:15:07,286 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2018-12-09 19:15:07,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-09 19:15:07,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2018-12-09 19:15:07,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 19:15:07,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2018-12-09 19:15:07,289 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 26 [2018-12-09 19:15:07,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:15:07,289 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2018-12-09 19:15:07,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 19:15:07,289 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2018-12-09 19:15:07,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-09 19:15:07,289 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:15:07,289 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] [2018-12-09 19:15:07,290 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:15:07,290 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:15:07,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1571354609, now seen corresponding path program 1 times [2018-12-09 19:15:07,290 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 19:15:07,290 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_33512df0-afe4-4a1d-9cee-be0126108632/bin-2019/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-12-09 19:15:07,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:15:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:15:07,395 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:15:07,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:15:07,528 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 19:15:07,536 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:15:07,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 19:15:07,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 19:15:07,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 19:15:07,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-12-09 19:15:07,537 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 8 states. [2018-12-09 19:15:07,981 WARN L180 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2018-12-09 19:15:08,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:15:08,676 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2018-12-09 19:15:08,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-09 19:15:08,676 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2018-12-09 19:15:08,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:15:08,677 INFO L225 Difference]: With dead ends: 40 [2018-12-09 19:15:08,677 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 19:15:08,677 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2018-12-09 19:15:08,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 19:15:08,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 19:15:08,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 19:15:08,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 19:15:08,677 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-12-09 19:15:08,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:15:08,678 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 19:15:08,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 19:15:08,678 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 19:15:08,678 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 19:15:08,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 19:15:08,737 INFO L451 ceAbstractionStarter]: At program point isnan_doubleENTRY(line 15) the Hoare annotation is: true [2018-12-09 19:15:08,738 INFO L448 ceAbstractionStarter]: For program point isnan_doubleEXIT(line 15) no Hoare annotation was computed. [2018-12-09 19:15:08,738 INFO L448 ceAbstractionStarter]: For program point isnan_doubleFINAL(line 15) no Hoare annotation was computed. [2018-12-09 19:15:08,738 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-09 19:15:08,738 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-09 19:15:08,738 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 19:15:08,738 INFO L448 ceAbstractionStarter]: For program point L31(lines 31 39) no Hoare annotation was computed. [2018-12-09 19:15:08,738 INFO L448 ceAbstractionStarter]: For program point L60(lines 60 72) no Hoare annotation was computed. [2018-12-09 19:15:08,738 INFO L448 ceAbstractionStarter]: For program point L52(lines 52 55) no Hoare annotation was computed. [2018-12-09 19:15:08,738 INFO L448 ceAbstractionStarter]: For program point L44(lines 44 49) no Hoare annotation was computed. [2018-12-09 19:15:08,738 INFO L448 ceAbstractionStarter]: For program point L32(lines 32 38) no Hoare annotation was computed. [2018-12-09 19:15:08,738 INFO L448 ceAbstractionStarter]: For program point L61(lines 61 70) no Hoare annotation was computed. [2018-12-09 19:15:08,738 INFO L448 ceAbstractionStarter]: For program point L61-1(lines 61 70) no Hoare annotation was computed. [2018-12-09 19:15:08,738 INFO L448 ceAbstractionStarter]: For program point L45(lines 45 46) no Hoare annotation was computed. [2018-12-09 19:15:08,738 INFO L448 ceAbstractionStarter]: For program point L45-2(lines 45 46) no Hoare annotation was computed. [2018-12-09 19:15:08,738 INFO L448 ceAbstractionStarter]: For program point L74(lines 74 79) no Hoare annotation was computed. [2018-12-09 19:15:08,738 INFO L448 ceAbstractionStarter]: For program point L74-1(lines 19 81) no Hoare annotation was computed. [2018-12-09 19:15:08,738 INFO L448 ceAbstractionStarter]: For program point L74-2(lines 74 79) no Hoare annotation was computed. [2018-12-09 19:15:08,738 INFO L448 ceAbstractionStarter]: For program point L66(lines 66 67) no Hoare annotation was computed. [2018-12-09 19:15:08,739 INFO L448 ceAbstractionStarter]: For program point L66-2(lines 66 67) no Hoare annotation was computed. [2018-12-09 19:15:08,739 INFO L448 ceAbstractionStarter]: For program point L62(lines 62 69) no Hoare annotation was computed. [2018-12-09 19:15:08,739 INFO L448 ceAbstractionStarter]: For program point L29(lines 29 73) no Hoare annotation was computed. [2018-12-09 19:15:08,739 INFO L448 ceAbstractionStarter]: For program point L58(lines 58 59) no Hoare annotation was computed. [2018-12-09 19:15:08,739 INFO L451 ceAbstractionStarter]: At program point ceil_doubleENTRY(lines 19 81) the Hoare annotation is: true [2018-12-09 19:15:08,739 INFO L448 ceAbstractionStarter]: For program point L42(lines 42 43) no Hoare annotation was computed. [2018-12-09 19:15:08,739 INFO L448 ceAbstractionStarter]: For program point ceil_doubleFINAL(lines 19 81) no Hoare annotation was computed. [2018-12-09 19:15:08,739 INFO L448 ceAbstractionStarter]: For program point ceil_doubleEXIT(lines 19 81) no Hoare annotation was computed. [2018-12-09 19:15:08,739 INFO L448 ceAbstractionStarter]: For program point L30(lines 30 50) no Hoare annotation was computed. [2018-12-09 19:15:08,739 INFO L448 ceAbstractionStarter]: For program point L22-1(lines 22 27) no Hoare annotation was computed. [2018-12-09 19:15:08,739 INFO L444 ceAbstractionStarter]: At program point L22-2(lines 22 27) the Hoare annotation is: (= |ceil_double_#in~x| ceil_double_~x) [2018-12-09 19:15:08,739 INFO L448 ceAbstractionStarter]: For program point L22-3(lines 22 27) no Hoare annotation was computed. [2018-12-09 19:15:08,739 INFO L448 ceAbstractionStarter]: For program point L51(lines 51 73) no Hoare annotation was computed. [2018-12-09 19:15:08,739 INFO L448 ceAbstractionStarter]: For program point L35(lines 35 38) no Hoare annotation was computed. [2018-12-09 19:15:08,739 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 19:15:08,739 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 19:15:08,739 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 19:15:08,739 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 19:15:08,739 INFO L448 ceAbstractionStarter]: For program point L95(line 95) no Hoare annotation was computed. [2018-12-09 19:15:08,739 INFO L444 ceAbstractionStarter]: At program point L94(line 94) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53)))) (and (= main_~x~0 .cse0) (= main_~res~0 .cse0))) [2018-12-09 19:15:08,740 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 83 100) the Hoare annotation is: true [2018-12-09 19:15:08,740 INFO L448 ceAbstractionStarter]: For program point L94-1(lines 94 97) no Hoare annotation was computed. [2018-12-09 19:15:08,740 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 83 100) no Hoare annotation was computed. [2018-12-09 19:15:08,740 INFO L444 ceAbstractionStarter]: At program point L91(line 91) the Hoare annotation is: (= main_~x~0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53))) [2018-12-09 19:15:08,740 INFO L448 ceAbstractionStarter]: For program point L91-1(line 91) no Hoare annotation was computed. [2018-12-09 19:15:08,740 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 83 100) no Hoare annotation was computed. [2018-12-09 19:15:08,740 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 95) no Hoare annotation was computed. [2018-12-09 19:15:08,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:15:08 BoogieIcfgContainer [2018-12-09 19:15:08,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 19:15:08,747 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 19:15:08,747 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 19:15:08,747 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 19:15:08,748 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:14:59" (3/4) ... [2018-12-09 19:15:08,750 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 19:15:08,754 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_double [2018-12-09 19:15:08,754 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 19:15:08,754 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ceil_double [2018-12-09 19:15:08,754 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 19:15:08,757 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2018-12-09 19:15:08,757 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-09 19:15:08,757 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 19:15:08,773 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-12-09 19:15:08,786 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_33512df0-afe4-4a1d-9cee-be0126108632/bin-2019/utaipan/witness.graphml [2018-12-09 19:15:08,787 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 19:15:08,787 INFO L168 Benchmark]: Toolchain (without parser) took 10871.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 943.4 MB in the beginning and 869.2 MB in the end (delta: 74.2 MB). Peak memory consumption was 217.8 MB. Max. memory is 11.5 GB. [2018-12-09 19:15:08,787 INFO L168 Benchmark]: CDTParser took 0.12 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. [2018-12-09 19:15:08,788 INFO L168 Benchmark]: CACSL2BoogieTranslator took 169.88 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 927.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-12-09 19:15:08,788 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.82 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. [2018-12-09 19:15:08,788 INFO L168 Benchmark]: Boogie Preprocessor took 54.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -205.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-12-09 19:15:08,788 INFO L168 Benchmark]: RCFGBuilder took 1049.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 11.5 GB. [2018-12-09 19:15:08,788 INFO L168 Benchmark]: TraceAbstraction took 9539.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 875.7 MB in the end (delta: 219.7 MB). Peak memory consumption was 219.7 MB. Max. memory is 11.5 GB. [2018-12-09 19:15:08,789 INFO L168 Benchmark]: Witness Printer took 39.29 ms. Allocated memory is still 1.2 GB. Free memory was 875.7 MB in the beginning and 869.2 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2018-12-09 19:15:08,790 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 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 169.88 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 927.3 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 15.82 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. * Boogie Preprocessor took 54.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -205.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1049.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9539.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 875.7 MB in the end (delta: 219.7 MB). Peak memory consumption was 219.7 MB. Max. memory is 11.5 GB. * Witness Printer took 39.29 ms. Allocated memory is still 1.2 GB. Free memory was 875.7 MB in the beginning and 869.2 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 95]: 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: \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 46 locations, 1 error locations. SAFE Result, 9.5s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 7.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 186 SDtfs, 249 SDslu, 649 SDs, 0 SdLazy, 326 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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, 5 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 13 PreInvPairs, 16 NumberOfFragments, 28 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 20 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 116 ConstructedInterpolants, 21 QuantifiedInterpolants, 18833 SizeOfPredicates, 16 NumberOfNonLiveVariables, 333 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...