./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.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 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_1adc1271-0e09-4b67-b84f-645b28e52b14/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1adc1271-0e09-4b67-b84f-645b28e52b14/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1adc1271-0e09-4b67-b84f-645b28e52b14/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1adc1271-0e09-4b67-b84f-645b28e52b14/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_1adc1271-0e09-4b67-b84f-645b28e52b14/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1adc1271-0e09-4b67-b84f-645b28e52b14/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_1adc1271-0e09-4b67-b84f-645b28e52b14/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1adc1271-0e09-4b67-b84f-645b28e52b14/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1adc1271-0e09-4b67-b84f-645b28e52b14/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1adc1271-0e09-4b67-b84f-645b28e52b14/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_1adc1271-0e09-4b67-b84f-645b28e52b14/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1adc1271-0e09-4b67-b84f-645b28e52b14/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 0.1.23-5842f4b [2018-11-18 11:36:08,303 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 11:36:08,305 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 11:36:08,314 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 11:36:08,314 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 11:36:08,315 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 11:36:08,316 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 11:36:08,318 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 11:36:08,319 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 11:36:08,320 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 11:36:08,321 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 11:36:08,321 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 11:36:08,322 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 11:36:08,323 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 11:36:08,324 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 11:36:08,324 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 11:36:08,325 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 11:36:08,327 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 11:36:08,328 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 11:36:08,330 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 11:36:08,331 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 11:36:08,332 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 11:36:08,334 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 11:36:08,334 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 11:36:08,334 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 11:36:08,335 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 11:36:08,336 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 11:36:08,336 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 11:36:08,337 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 11:36:08,339 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 11:36:08,339 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 11:36:08,340 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 11:36:08,340 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 11:36:08,340 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 11:36:08,341 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 11:36:08,341 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 11:36:08,342 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1adc1271-0e09-4b67-b84f-645b28e52b14/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 11:36:08,354 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 11:36:08,354 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 11:36:08,355 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 11:36:08,355 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 11:36:08,355 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 11:36:08,355 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 11:36:08,355 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 11:36:08,356 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 11:36:08,356 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 11:36:08,356 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 11:36:08,356 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 11:36:08,356 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 11:36:08,356 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 11:36:08,357 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 11:36:08,357 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 11:36:08,359 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 11:36:08,359 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 11:36:08,359 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 11:36:08,359 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 11:36:08,359 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 11:36:08,360 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 11:36:08,360 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 11:36:08,360 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 11:36:08,360 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 11:36:08,360 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 11:36:08,360 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 11:36:08,361 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 11:36:08,361 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 11:36:08,361 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 11:36:08,361 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:36:08,361 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 11:36:08,362 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 11:36:08,362 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 11:36:08,362 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 11:36:08,362 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 11:36:08,362 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 11:36:08,362 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 11:36:08,363 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_1adc1271-0e09-4b67-b84f-645b28e52b14/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 [2018-11-18 11:36:08,406 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 11:36:08,419 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 11:36:08,422 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 11:36:08,423 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 11:36:08,424 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 11:36:08,424 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1adc1271-0e09-4b67-b84f-645b28e52b14/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1091_true-unreach-call.c [2018-11-18 11:36:08,476 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1adc1271-0e09-4b67-b84f-645b28e52b14/bin-2019/utaipan/data/42af055e1/954e98c0e9444fdf990b8665abd7c5ef/FLAG695f46a30 [2018-11-18 11:36:08,836 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 11:36:08,837 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1adc1271-0e09-4b67-b84f-645b28e52b14/sv-benchmarks/c/float-newlib/double_req_bl_1091_true-unreach-call.c [2018-11-18 11:36:08,843 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1adc1271-0e09-4b67-b84f-645b28e52b14/bin-2019/utaipan/data/42af055e1/954e98c0e9444fdf990b8665abd7c5ef/FLAG695f46a30 [2018-11-18 11:36:09,252 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1adc1271-0e09-4b67-b84f-645b28e52b14/bin-2019/utaipan/data/42af055e1/954e98c0e9444fdf990b8665abd7c5ef [2018-11-18 11:36:09,254 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 11:36:09,256 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 11:36:09,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 11:36:09,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 11:36:09,260 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 11:36:09,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:36:09" (1/1) ... [2018-11-18 11:36:09,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26de3d9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:36:09, skipping insertion in model container [2018-11-18 11:36:09,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:36:09" (1/1) ... [2018-11-18 11:36:09,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 11:36:09,292 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 11:36:09,439 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:36:09,442 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 11:36:09,467 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:36:09,484 INFO L195 MainTranslator]: Completed translation [2018-11-18 11:36:09,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:36:09 WrapperNode [2018-11-18 11:36:09,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 11:36:09,486 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 11:36:09,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 11:36:09,486 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 11:36:09,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:36:09" (1/1) ... [2018-11-18 11:36:09,501 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:36:09" (1/1) ... [2018-11-18 11:36:09,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 11:36:09,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 11:36:09,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 11:36:09,507 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 11:36:09,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:36:09" (1/1) ... [2018-11-18 11:36:09,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:36:09" (1/1) ... [2018-11-18 11:36:09,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:36:09" (1/1) ... [2018-11-18 11:36:09,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:36:09" (1/1) ... [2018-11-18 11:36:09,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:36:09" (1/1) ... [2018-11-18 11:36:09,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:36:09" (1/1) ... [2018-11-18 11:36:09,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:36:09" (1/1) ... [2018-11-18 11:36:09,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 11:36:09,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 11:36:09,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 11:36:09,579 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 11:36:09,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:36:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1adc1271-0e09-4b67-b84f-645b28e52b14/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:36:09,626 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-11-18 11:36:09,626 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-11-18 11:36:09,626 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2018-11-18 11:36:09,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2018-11-18 11:36:09,627 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 11:36:09,627 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 11:36:09,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-18 11:36:09,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 11:36:09,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 11:36:09,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 11:36:09,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-18 11:36:09,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 11:36:09,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 11:36:09,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 11:36:09,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 11:36:09,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 11:36:09,890 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 11:36:09,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:36:09 BoogieIcfgContainer [2018-11-18 11:36:09,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 11:36:09,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 11:36:09,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 11:36:09,894 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 11:36:09,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:36:09" (1/3) ... [2018-11-18 11:36:09,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7671da65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:36:09, skipping insertion in model container [2018-11-18 11:36:09,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:36:09" (2/3) ... [2018-11-18 11:36:09,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7671da65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:36:09, skipping insertion in model container [2018-11-18 11:36:09,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:36:09" (3/3) ... [2018-11-18 11:36:09,896 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091_true-unreach-call.c [2018-11-18 11:36:09,902 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 11:36:09,908 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 11:36:09,917 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 11:36:09,938 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 11:36:09,938 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 11:36:09,938 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 11:36:09,939 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 11:36:09,939 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 11:36:09,939 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 11:36:09,939 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 11:36:09,939 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 11:36:09,953 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2018-11-18 11:36:09,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 11:36:09,958 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:36:09,958 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:36:09,960 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:36:09,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:36:09,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1424647203, now seen corresponding path program 1 times [2018-11-18 11:36:09,967 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:36:10,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:36:10,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:36:10,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:36:10,006 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:36:10,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:36:10,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:36:10,069 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:36:10,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:36:10,070 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:36:10,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 11:36:10,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 11:36:10,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 11:36:10,088 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2018-11-18 11:36:10,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:36:10,103 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2018-11-18 11:36:10,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 11:36:10,103 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2018-11-18 11:36:10,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:36:10,110 INFO L225 Difference]: With dead ends: 86 [2018-11-18 11:36:10,110 INFO L226 Difference]: Without dead ends: 43 [2018-11-18 11:36:10,113 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 11:36:10,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-18 11:36:10,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-11-18 11:36:10,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-18 11:36:10,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2018-11-18 11:36:10,141 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2018-11-18 11:36:10,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:36:10,142 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2018-11-18 11:36:10,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 11:36:10,142 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2018-11-18 11:36:10,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 11:36:10,143 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:36:10,143 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:36:10,143 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:36:10,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:36:10,144 INFO L82 PathProgramCache]: Analyzing trace with hash 4748179, now seen corresponding path program 1 times [2018-11-18 11:36:10,144 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:36:10,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:36:10,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:36:10,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:36:10,145 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:36:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:36:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:36:10,210 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 11:36:10,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 11:36:10 BoogieIcfgContainer [2018-11-18 11:36:10,230 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 11:36:10,230 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 11:36:10,230 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 11:36:10,231 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 11:36:10,231 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:36:09" (3/4) ... [2018-11-18 11:36:10,233 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 11:36:10,233 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 11:36:10,234 INFO L168 Benchmark]: Toolchain (without parser) took 978.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.6 MB). Free memory was 960.7 MB in the beginning and 1.1 GB in the end (delta: -157.4 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. [2018-11-18 11:36:10,235 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:36:10,235 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.62 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 947.3 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-18 11:36:10,235 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.33 ms. Allocated memory is still 1.0 GB. Free memory is still 947.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:36:10,235 INFO L168 Benchmark]: Boogie Preprocessor took 71.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.6 MB). Free memory was 947.3 MB in the beginning and 1.2 GB in the end (delta: -222.8 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-18 11:36:10,236 INFO L168 Benchmark]: RCFGBuilder took 311.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 23.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2018-11-18 11:36:10,236 INFO L168 Benchmark]: TraceAbstraction took 338.95 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: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. [2018-11-18 11:36:10,237 INFO L168 Benchmark]: Witness Printer took 2.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:36:10,239 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 228.62 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 947.3 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 21.33 ms. Allocated memory is still 1.0 GB. Free memory is still 947.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 71.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.6 MB). Free memory was 947.3 MB in the beginning and 1.2 GB in the end (delta: -222.8 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 311.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 23.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 338.95 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: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. * Witness Printer took 2.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 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)=6442450946, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L90] double x = 0.0 / 0.0; VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L91] CALL, EXPR ceil_double(x) VAL [\old(x)=6442450947, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L20] __int32_t i0, i1, j0; [L21] __uint32_t i, j; VAL [\old(x)=6442450947, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=6442450947] [L23] FCALL ieee_double_shape_type ew_u; [L24] FCALL ew_u.value = (x) [L25] EXPR, FCALL ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR, FCALL ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L27] COND FALSE !(0) VAL [\old(x)=6442450947, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=2147483647, i1=3, x=6442450947] [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [\old(x)=6442450947, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=2147483647, i1=3, x=6442450947] [L29] COND TRUE j0 < 20 VAL [\old(x)=6442450947, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=2147483647, i1=3, j0=0, x=6442450947] [L30] COND FALSE !(j0 < 0) [L41] i = (0x000fffff) >> j0 VAL [\old(x)=6442450947, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=2147483647, i1=3, j0=0, x=6442450947] [L42] COND TRUE ((i0 & i) | i1) == 0 [L43] RET return x; VAL [\old(x)=6442450947, \result=6442450947, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=2147483647, i1=3, j0=0, x=6442450947] [L91] EXPR ceil_double(x) VAL [ceil_double(x)=6442450947, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=6442450947] [L91] double res = ceil_double(x); [L94] CALL, EXPR isnan_double(res) VAL [\old(x)=6442450947, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L15] RET return x != x; VAL [\old(x)=6442450947, \result=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=6442450947] [L94] EXPR isnan_double(res) VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, isnan_double(res)=0, res=6442450947, x=6442450947] [L94] COND TRUE !isnan_double(res) [L95] __VERIFIER_error() VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=6442450947, x=6442450947] - 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 0.1.23-5842f4b [2018-11-18 11:36:11,791 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 11:36:11,792 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 11:36:11,800 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 11:36:11,800 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 11:36:11,801 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 11:36:11,802 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 11:36:11,803 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 11:36:11,804 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 11:36:11,805 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 11:36:11,805 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 11:36:11,806 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 11:36:11,806 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 11:36:11,807 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 11:36:11,808 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 11:36:11,808 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 11:36:11,809 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 11:36:11,810 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 11:36:11,811 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 11:36:11,813 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 11:36:11,813 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 11:36:11,814 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 11:36:11,823 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 11:36:11,823 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 11:36:11,823 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 11:36:11,824 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 11:36:11,825 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 11:36:11,825 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 11:36:11,826 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 11:36:11,827 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 11:36:11,827 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 11:36:11,828 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 11:36:11,828 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 11:36:11,828 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 11:36:11,829 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 11:36:11,829 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 11:36:11,830 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1adc1271-0e09-4b67-b84f-645b28e52b14/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-18 11:36:11,848 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 11:36:11,848 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 11:36:11,849 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 11:36:11,849 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 11:36:11,854 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 11:36:11,854 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 11:36:11,854 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 11:36:11,854 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 11:36:11,855 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 11:36:11,855 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 11:36:11,855 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 11:36:11,855 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 11:36:11,855 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 11:36:11,856 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 11:36:11,856 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 11:36:11,856 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 11:36:11,856 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 11:36:11,856 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 11:36:11,856 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 11:36:11,856 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 11:36:11,856 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 11:36:11,857 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 11:36:11,857 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 11:36:11,857 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 11:36:11,857 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 11:36:11,857 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 11:36:11,857 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 11:36:11,859 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:36:11,859 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 11:36:11,859 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 11:36:11,859 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 11:36:11,859 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 11:36:11,860 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 11:36:11,860 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 11:36:11,860 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 11:36:11,860 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_1adc1271-0e09-4b67-b84f-645b28e52b14/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 [2018-11-18 11:36:11,900 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 11:36:11,909 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 11:36:11,912 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 11:36:11,913 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 11:36:11,913 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 11:36:11,914 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1adc1271-0e09-4b67-b84f-645b28e52b14/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1091_true-unreach-call.c [2018-11-18 11:36:11,957 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1adc1271-0e09-4b67-b84f-645b28e52b14/bin-2019/utaipan/data/acc19cb13/8d1a98f785944180901b1abcde294dfd/FLAG0fdbfeedd [2018-11-18 11:36:12,329 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 11:36:12,330 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1adc1271-0e09-4b67-b84f-645b28e52b14/sv-benchmarks/c/float-newlib/double_req_bl_1091_true-unreach-call.c [2018-11-18 11:36:12,335 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1adc1271-0e09-4b67-b84f-645b28e52b14/bin-2019/utaipan/data/acc19cb13/8d1a98f785944180901b1abcde294dfd/FLAG0fdbfeedd [2018-11-18 11:36:12,346 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1adc1271-0e09-4b67-b84f-645b28e52b14/bin-2019/utaipan/data/acc19cb13/8d1a98f785944180901b1abcde294dfd [2018-11-18 11:36:12,349 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 11:36:12,350 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 11:36:12,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 11:36:12,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 11:36:12,354 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 11:36:12,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:36:12" (1/1) ... [2018-11-18 11:36:12,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42845a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:36:12, skipping insertion in model container [2018-11-18 11:36:12,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:36:12" (1/1) ... [2018-11-18 11:36:12,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 11:36:12,382 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 11:36:12,540 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:36:12,544 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 11:36:12,570 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:36:12,592 INFO L195 MainTranslator]: Completed translation [2018-11-18 11:36:12,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:36:12 WrapperNode [2018-11-18 11:36:12,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 11:36:12,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 11:36:12,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 11:36:12,593 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 11:36:12,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:36:12" (1/1) ... [2018-11-18 11:36:12,609 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:36:12" (1/1) ... [2018-11-18 11:36:12,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 11:36:12,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 11:36:12,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 11:36:12,615 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 11:36:12,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:36:12" (1/1) ... [2018-11-18 11:36:12,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:36:12" (1/1) ... [2018-11-18 11:36:12,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:36:12" (1/1) ... [2018-11-18 11:36:12,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:36:12" (1/1) ... [2018-11-18 11:36:12,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:36:12" (1/1) ... [2018-11-18 11:36:12,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:36:12" (1/1) ... [2018-11-18 11:36:12,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:36:12" (1/1) ... [2018-11-18 11:36:12,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 11:36:12,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 11:36:12,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 11:36:12,659 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 11:36:12,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:36:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1adc1271-0e09-4b67-b84f-645b28e52b14/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:36:12,766 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-11-18 11:36:12,766 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-11-18 11:36:12,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-11-18 11:36:12,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-11-18 11:36:12,767 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2018-11-18 11:36:12,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2018-11-18 11:36:12,767 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 11:36:12,767 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 11:36:12,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 11:36:12,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 11:36:12,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 11:36:12,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 11:36:12,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 11:36:12,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 11:36:12,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 11:36:12,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 11:36:12,968 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 11:36:14,036 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 11:36:14,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:36:14 BoogieIcfgContainer [2018-11-18 11:36:14,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 11:36:14,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 11:36:14,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 11:36:14,040 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 11:36:14,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:36:12" (1/3) ... [2018-11-18 11:36:14,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df8a9a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:36:14, skipping insertion in model container [2018-11-18 11:36:14,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:36:12" (2/3) ... [2018-11-18 11:36:14,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df8a9a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:36:14, skipping insertion in model container [2018-11-18 11:36:14,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:36:14" (3/3) ... [2018-11-18 11:36:14,042 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091_true-unreach-call.c [2018-11-18 11:36:14,048 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 11:36:14,053 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 11:36:14,061 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 11:36:14,083 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 11:36:14,084 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 11:36:14,084 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 11:36:14,084 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 11:36:14,084 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 11:36:14,084 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 11:36:14,085 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 11:36:14,085 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 11:36:14,085 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 11:36:14,098 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-11-18 11:36:14,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 11:36:14,102 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:36:14,102 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:36:14,104 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:36:14,107 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:36:14,108 INFO L82 PathProgramCache]: Analyzing trace with hash 910169954, now seen corresponding path program 1 times [2018-11-18 11:36:14,110 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:36:14,111 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1adc1271-0e09-4b67-b84f-645b28e52b14/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-18 11:36:14,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:36:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:36:14,168 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:36:14,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:36:14,182 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:36:14,195 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:36:14,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:36:14,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 11:36:14,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 11:36:14,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 11:36:14,207 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 2 states. [2018-11-18 11:36:14,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:36:14,223 INFO L93 Difference]: Finished difference Result 84 states and 122 transitions. [2018-11-18 11:36:14,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 11:36:14,224 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-11-18 11:36:14,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:36:14,231 INFO L225 Difference]: With dead ends: 84 [2018-11-18 11:36:14,231 INFO L226 Difference]: Without dead ends: 42 [2018-11-18 11:36:14,233 INFO L604 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 [2018-11-18 11:36:14,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-18 11:36:14,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-11-18 11:36:14,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-18 11:36:14,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 56 transitions. [2018-11-18 11:36:14,260 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 56 transitions. Word has length 22 [2018-11-18 11:36:14,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:36:14,260 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 56 transitions. [2018-11-18 11:36:14,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 11:36:14,260 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 56 transitions. [2018-11-18 11:36:14,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 11:36:14,261 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:36:14,261 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:36:14,261 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:36:14,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:36:14,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1178901992, now seen corresponding path program 1 times [2018-11-18 11:36:14,262 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:36:14,262 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1adc1271-0e09-4b67-b84f-645b28e52b14/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-18 11:36:14,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:36:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:36:14,318 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:36:14,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:36:14,487 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:36:14,494 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:36:14,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-18 11:36:14,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 11:36:14,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 11:36:14,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-18 11:36:14,496 INFO L87 Difference]: Start difference. First operand 42 states and 56 transitions. Second operand 9 states. [2018-11-18 11:36:15,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:36:15,733 INFO L93 Difference]: Finished difference Result 51 states and 65 transitions. [2018-11-18 11:36:15,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 11:36:15,733 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2018-11-18 11:36:15,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:36:15,735 INFO L225 Difference]: With dead ends: 51 [2018-11-18 11:36:15,735 INFO L226 Difference]: Without dead ends: 44 [2018-11-18 11:36:15,736 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-11-18 11:36:15,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-18 11:36:15,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2018-11-18 11:36:15,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-18 11:36:15,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2018-11-18 11:36:15,743 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 23 [2018-11-18 11:36:15,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:36:15,743 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2018-11-18 11:36:15,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 11:36:15,743 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2018-11-18 11:36:15,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 11:36:15,744 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:36:15,744 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:36:15,744 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:36:15,745 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:36:15,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1269772127, now seen corresponding path program 1 times [2018-11-18 11:36:15,745 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:36:15,745 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1adc1271-0e09-4b67-b84f-645b28e52b14/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-18 11:36:15,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:36:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:36:15,821 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:36:16,264 WARN L180 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2018-11-18 11:36:16,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:36:16,877 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:36:16,888 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:36:16,888 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-18 11:36:16,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 11:36:16,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 11:36:16,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-18 11:36:16,889 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand 9 states. [2018-11-18 11:36:18,502 WARN L180 SmtUtils]: Spent 503.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-18 11:36:20,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:36:20,658 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2018-11-18 11:36:20,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 11:36:20,659 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2018-11-18 11:36:20,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:36:20,660 INFO L225 Difference]: With dead ends: 49 [2018-11-18 11:36:20,660 INFO L226 Difference]: Without dead ends: 41 [2018-11-18 11:36:20,660 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-11-18 11:36:20,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-18 11:36:20,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-18 11:36:20,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-18 11:36:20,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2018-11-18 11:36:20,664 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 23 [2018-11-18 11:36:20,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:36:20,665 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2018-11-18 11:36:20,665 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 11:36:20,665 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2018-11-18 11:36:20,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 11:36:20,666 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:36:20,666 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:36:20,666 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:36:20,666 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:36:20,666 INFO L82 PathProgramCache]: Analyzing trace with hash -566235198, now seen corresponding path program 1 times [2018-11-18 11:36:20,667 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:36:20,667 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1adc1271-0e09-4b67-b84f-645b28e52b14/bin-2019/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-18 11:36:20,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:36:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:36:20,786 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:36:20,817 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:36:20,818 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:36:20,821 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2018-11-18 11:36:20,853 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:36:20,860 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2018-11-18 11:36:20,861 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 11:36:20,871 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2018-11-18 11:36:20,876 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 4 [2018-11-18 11:36:20,876 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 11:36:20,879 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:36:20,881 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:36:20,889 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 11:36:20,889 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:42, output treesize:14 [2018-11-18 11:36:20,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:36:20,979 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:36:20,991 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:36:20,991 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 11:36:20,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 11:36:20,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 11:36:20,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 11:36:20,992 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand 7 states. [2018-11-18 11:36:23,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:36:23,330 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2018-11-18 11:36:23,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-18 11:36:23,331 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2018-11-18 11:36:23,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:36:23,332 INFO L225 Difference]: With dead ends: 67 [2018-11-18 11:36:23,332 INFO L226 Difference]: Without dead ends: 40 [2018-11-18 11:36:23,332 INFO L604 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 [2018-11-18 11:36:23,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-18 11:36:23,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2018-11-18 11:36:23,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-18 11:36:23,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2018-11-18 11:36:23,335 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 26 [2018-11-18 11:36:23,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:36:23,336 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2018-11-18 11:36:23,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 11:36:23,336 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2018-11-18 11:36:23,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 11:36:23,337 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:36:23,337 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:36:23,337 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:36:23,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:36:23,337 INFO L82 PathProgramCache]: Analyzing trace with hash -904830508, now seen corresponding path program 1 times [2018-11-18 11:36:23,338 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:36:23,338 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1adc1271-0e09-4b67-b84f-645b28e52b14/bin-2019/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-11-18 11:36:23,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:36:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:36:23,463 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:36:23,479 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:36:23,480 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:36:23,481 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2018-11-18 11:36:23,512 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2018-11-18 11:36:23,513 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 11:36:23,526 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2018-11-18 11:36:23,530 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2018-11-18 11:36:23,531 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 11:36:23,532 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:36:23,534 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:36:23,539 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 11:36:23,540 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:42, output treesize:14 [2018-11-18 11:36:23,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:36:23,663 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:36:23,672 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:36:23,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 11:36:23,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 11:36:23,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 11:36:23,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-11-18 11:36:23,672 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 8 states. [2018-11-18 11:36:23,929 WARN L180 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-11-18 11:36:24,150 WARN L180 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2018-11-18 11:36:24,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:36:24,696 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2018-11-18 11:36:24,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 11:36:24,696 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2018-11-18 11:36:24,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:36:24,697 INFO L225 Difference]: With dead ends: 40 [2018-11-18 11:36:24,697 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 11:36:24,697 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2018-11-18 11:36:24,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 11:36:24,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 11:36:24,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 11:36:24,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 11:36:24,698 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-11-18 11:36:24,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:36:24,698 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 11:36:24,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 11:36:24,698 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 11:36:24,698 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 11:36:24,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 11:36:24,771 INFO L428 ceAbstractionStarter]: At program point isnan_doubleENTRY(line 15) the Hoare annotation is: true [2018-11-18 11:36:24,771 INFO L425 ceAbstractionStarter]: For program point isnan_doubleEXIT(line 15) no Hoare annotation was computed. [2018-11-18 11:36:24,771 INFO L425 ceAbstractionStarter]: For program point isnan_doubleFINAL(line 15) no Hoare annotation was computed. [2018-11-18 11:36:24,771 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 11:36:24,771 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 11:36:24,771 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 11:36:24,771 INFO L425 ceAbstractionStarter]: For program point L31(lines 31 39) no Hoare annotation was computed. [2018-11-18 11:36:24,771 INFO L425 ceAbstractionStarter]: For program point L60(lines 60 72) no Hoare annotation was computed. [2018-11-18 11:36:24,771 INFO L425 ceAbstractionStarter]: For program point L52(lines 52 55) no Hoare annotation was computed. [2018-11-18 11:36:24,772 INFO L425 ceAbstractionStarter]: For program point L44(lines 44 49) no Hoare annotation was computed. [2018-11-18 11:36:24,772 INFO L425 ceAbstractionStarter]: For program point L32(lines 32 38) no Hoare annotation was computed. [2018-11-18 11:36:24,772 INFO L425 ceAbstractionStarter]: For program point L61(lines 61 70) no Hoare annotation was computed. [2018-11-18 11:36:24,772 INFO L425 ceAbstractionStarter]: For program point L61-1(lines 61 70) no Hoare annotation was computed. [2018-11-18 11:36:24,772 INFO L425 ceAbstractionStarter]: For program point L45(lines 45 46) no Hoare annotation was computed. [2018-11-18 11:36:24,772 INFO L425 ceAbstractionStarter]: For program point L45-2(lines 45 46) no Hoare annotation was computed. [2018-11-18 11:36:24,772 INFO L425 ceAbstractionStarter]: For program point L74(lines 74 79) no Hoare annotation was computed. [2018-11-18 11:36:24,772 INFO L425 ceAbstractionStarter]: For program point L74-2(lines 19 81) no Hoare annotation was computed. [2018-11-18 11:36:24,772 INFO L425 ceAbstractionStarter]: For program point L74-3(lines 74 79) no Hoare annotation was computed. [2018-11-18 11:36:24,772 INFO L425 ceAbstractionStarter]: For program point L66(lines 66 67) no Hoare annotation was computed. [2018-11-18 11:36:24,772 INFO L425 ceAbstractionStarter]: For program point L66-2(lines 66 67) no Hoare annotation was computed. [2018-11-18 11:36:24,772 INFO L425 ceAbstractionStarter]: For program point L62(lines 62 69) no Hoare annotation was computed. [2018-11-18 11:36:24,772 INFO L425 ceAbstractionStarter]: For program point L29(lines 29 73) no Hoare annotation was computed. [2018-11-18 11:36:24,773 INFO L425 ceAbstractionStarter]: For program point L58(lines 58 59) no Hoare annotation was computed. [2018-11-18 11:36:24,773 INFO L428 ceAbstractionStarter]: At program point ceil_doubleENTRY(lines 19 81) the Hoare annotation is: true [2018-11-18 11:36:24,773 INFO L425 ceAbstractionStarter]: For program point L42(lines 42 43) no Hoare annotation was computed. [2018-11-18 11:36:24,773 INFO L425 ceAbstractionStarter]: For program point ceil_doubleFINAL(lines 19 81) no Hoare annotation was computed. [2018-11-18 11:36:24,773 INFO L425 ceAbstractionStarter]: For program point ceil_doubleEXIT(lines 19 81) no Hoare annotation was computed. [2018-11-18 11:36:24,773 INFO L425 ceAbstractionStarter]: For program point L30(lines 30 50) no Hoare annotation was computed. [2018-11-18 11:36:24,773 INFO L425 ceAbstractionStarter]: For program point L22-1(lines 22 27) no Hoare annotation was computed. [2018-11-18 11:36:24,773 INFO L421 ceAbstractionStarter]: At program point L22-3(lines 22 27) the Hoare annotation is: (= |ceil_double_#in~x| ceil_double_~x) [2018-11-18 11:36:24,773 INFO L425 ceAbstractionStarter]: For program point L51(lines 51 73) no Hoare annotation was computed. [2018-11-18 11:36:24,773 INFO L425 ceAbstractionStarter]: For program point L22-4(lines 22 27) no Hoare annotation was computed. [2018-11-18 11:36:24,773 INFO L425 ceAbstractionStarter]: For program point L35(lines 35 38) no Hoare annotation was computed. [2018-11-18 11:36:24,773 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 11:36:24,774 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 11:36:24,774 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 11:36:24,774 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 11:36:24,774 INFO L425 ceAbstractionStarter]: For program point L95(line 95) no Hoare annotation was computed. [2018-11-18 11:36:24,774 INFO L421 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))) [2018-11-18 11:36:24,774 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 83 100) the Hoare annotation is: true [2018-11-18 11:36:24,774 INFO L425 ceAbstractionStarter]: For program point L94-1(lines 94 97) no Hoare annotation was computed. [2018-11-18 11:36:24,774 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 83 100) no Hoare annotation was computed. [2018-11-18 11:36:24,774 INFO L421 ceAbstractionStarter]: At program point L91(line 91) the Hoare annotation is: (= main_~x~0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53))) [2018-11-18 11:36:24,774 INFO L425 ceAbstractionStarter]: For program point L91-1(line 91) no Hoare annotation was computed. [2018-11-18 11:36:24,774 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 83 100) no Hoare annotation was computed. [2018-11-18 11:36:24,775 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 95) no Hoare annotation was computed. [2018-11-18 11:36:24,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 11:36:24 BoogieIcfgContainer [2018-11-18 11:36:24,783 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 11:36:24,784 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 11:36:24,784 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 11:36:24,784 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 11:36:24,784 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:36:14" (3/4) ... [2018-11-18 11:36:24,787 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 11:36:24,791 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_double [2018-11-18 11:36:24,791 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 11:36:24,791 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ceil_double [2018-11-18 11:36:24,792 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 11:36:24,796 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2018-11-18 11:36:24,796 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-18 11:36:24,796 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 11:36:24,814 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-11-18 11:36:24,834 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_1adc1271-0e09-4b67-b84f-645b28e52b14/bin-2019/utaipan/witness.graphml [2018-11-18 11:36:24,834 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 11:36:24,834 INFO L168 Benchmark]: Toolchain (without parser) took 12485.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 950.5 MB in the beginning and 859.3 MB in the end (delta: 91.2 MB). Peak memory consumption was 239.6 MB. Max. memory is 11.5 GB. [2018-11-18 11:36:24,835 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:36:24,835 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.08 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 934.4 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 11:36:24,835 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.46 ms. Allocated memory is still 1.0 GB. Free memory is still 934.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:36:24,835 INFO L168 Benchmark]: Boogie Preprocessor took 43.56 ms. Allocated memory is still 1.0 GB. Free memory is still 934.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:36:24,835 INFO L168 Benchmark]: RCFGBuilder took 1378.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 934.4 MB in the beginning and 1.1 GB in the end (delta: -173.5 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. [2018-11-18 11:36:24,836 INFO L168 Benchmark]: TraceAbstraction took 10745.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 866.1 MB in the end (delta: 241.8 MB). Peak memory consumption was 241.8 MB. Max. memory is 11.5 GB. [2018-11-18 11:36:24,837 INFO L168 Benchmark]: Witness Printer took 50.13 ms. Allocated memory is still 1.2 GB. Free memory was 866.1 MB in the beginning and 859.3 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-11-18 11:36:24,838 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 242.08 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 934.4 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 21.46 ms. Allocated memory is still 1.0 GB. Free memory is still 934.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 43.56 ms. Allocated memory is still 1.0 GB. Free memory is still 934.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1378.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 934.4 MB in the beginning and 1.1 GB in the end (delta: -173.5 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 10745.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 866.1 MB in the end (delta: 241.8 MB). Peak memory consumption was 241.8 MB. Max. memory is 11.5 GB. * Witness Printer took 50.13 ms. Allocated memory is still 1.2 GB. Free memory was 866.1 MB in the beginning and 859.3 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 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, 10.6s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 8.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 186 SDtfs, 249 SDslu, 649 SDs, 0 SdLazy, 326 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 3.6s 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, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 116 ConstructedInterpolants, 21 QuantifiedInterpolants, 18833 SizeOfPredicates, 16 NumberOfNonLiveVariables, 325 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...