./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1032c_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_8e1597ad-7167-48ad-8a69-ed309f50632f/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8e1597ad-7167-48ad-8a69-ed309f50632f/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8e1597ad-7167-48ad-8a69-ed309f50632f/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8e1597ad-7167-48ad-8a69-ed309f50632f/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1032c_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_8e1597ad-7167-48ad-8a69-ed309f50632f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8e1597ad-7167-48ad-8a69-ed309f50632f/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 b4428fa1091f4cda8c57d8e78988385def4dacf9 .............................................................................................................................................................................................................................................................................................................................. 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_8e1597ad-7167-48ad-8a69-ed309f50632f/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8e1597ad-7167-48ad-8a69-ed309f50632f/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8e1597ad-7167-48ad-8a69-ed309f50632f/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8e1597ad-7167-48ad-8a69-ed309f50632f/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1032c_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_8e1597ad-7167-48ad-8a69-ed309f50632f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8e1597ad-7167-48ad-8a69-ed309f50632f/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 b4428fa1091f4cda8c57d8e78988385def4dacf9 ............................................................................................................................................................................................................................................................................................................................................................................................... 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 17:36:52,094 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 17:36:52,095 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 17:36:52,103 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 17:36:52,103 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 17:36:52,104 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 17:36:52,105 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 17:36:52,106 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 17:36:52,107 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 17:36:52,108 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 17:36:52,109 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 17:36:52,109 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 17:36:52,110 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 17:36:52,111 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 17:36:52,112 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 17:36:52,112 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 17:36:52,113 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 17:36:52,115 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 17:36:52,116 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 17:36:52,117 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 17:36:52,118 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 17:36:52,119 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 17:36:52,121 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 17:36:52,121 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 17:36:52,121 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 17:36:52,122 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 17:36:52,123 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 17:36:52,124 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 17:36:52,124 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 17:36:52,125 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 17:36:52,125 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 17:36:52,126 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 17:36:52,126 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 17:36:52,126 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 17:36:52,127 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 17:36:52,128 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 17:36:52,128 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8e1597ad-7167-48ad-8a69-ed309f50632f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 17:36:52,138 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 17:36:52,139 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 17:36:52,139 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 17:36:52,139 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 17:36:52,140 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 17:36:52,140 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 17:36:52,140 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 17:36:52,140 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 17:36:52,140 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 17:36:52,140 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 17:36:52,140 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 17:36:52,140 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 17:36:52,141 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 17:36:52,141 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 17:36:52,141 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 17:36:52,141 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 17:36:52,142 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 17:36:52,142 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 17:36:52,142 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 17:36:52,144 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 17:36:52,144 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 17:36:52,144 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 17:36:52,144 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 17:36:52,144 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 17:36:52,144 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 17:36:52,144 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 17:36:52,145 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 17:36:52,145 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 17:36:52,145 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 17:36:52,145 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:36:52,145 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 17:36:52,145 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 17:36:52,145 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 17:36:52,145 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 17:36:52,146 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 17:36:52,146 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 17:36:52,146 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 17:36:52,146 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_8e1597ad-7167-48ad-8a69-ed309f50632f/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 -> b4428fa1091f4cda8c57d8e78988385def4dacf9 [2018-11-18 17:36:52,174 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 17:36:52,184 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 17:36:52,187 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 17:36:52,188 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 17:36:52,189 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 17:36:52,189 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8e1597ad-7167-48ad-8a69-ed309f50632f/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1032c_true-unreach-call.c [2018-11-18 17:36:52,250 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8e1597ad-7167-48ad-8a69-ed309f50632f/bin-2019/utaipan/data/81060bc5f/d67d1ac475b94a68b3d6b549b33cea63/FLAG993bdeae0 [2018-11-18 17:36:52,667 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 17:36:52,667 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8e1597ad-7167-48ad-8a69-ed309f50632f/sv-benchmarks/c/float-newlib/float_req_bl_1032c_true-unreach-call.c [2018-11-18 17:36:52,672 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8e1597ad-7167-48ad-8a69-ed309f50632f/bin-2019/utaipan/data/81060bc5f/d67d1ac475b94a68b3d6b549b33cea63/FLAG993bdeae0 [2018-11-18 17:36:52,685 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8e1597ad-7167-48ad-8a69-ed309f50632f/bin-2019/utaipan/data/81060bc5f/d67d1ac475b94a68b3d6b549b33cea63 [2018-11-18 17:36:52,688 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 17:36:52,690 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 17:36:52,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 17:36:52,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 17:36:52,694 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 17:36:52,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:36:52" (1/1) ... [2018-11-18 17:36:52,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fb059b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:36:52, skipping insertion in model container [2018-11-18 17:36:52,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:36:52" (1/1) ... [2018-11-18 17:36:52,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 17:36:52,729 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 17:36:52,906 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:36:52,909 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 17:36:52,928 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:36:52,943 INFO L195 MainTranslator]: Completed translation [2018-11-18 17:36:52,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:36:52 WrapperNode [2018-11-18 17:36:52,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 17:36:52,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 17:36:52,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 17:36:52,945 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 17:36:52,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:36:52" (1/1) ... [2018-11-18 17:36:52,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:36:52" (1/1) ... [2018-11-18 17:36:52,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 17:36:52,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 17:36:52,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 17:36:52,965 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 17:36:52,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:36:52" (1/1) ... [2018-11-18 17:36:52,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:36:52" (1/1) ... [2018-11-18 17:36:52,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:36:52" (1/1) ... [2018-11-18 17:36:52,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:36:52" (1/1) ... [2018-11-18 17:36:52,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:36:52" (1/1) ... [2018-11-18 17:36:53,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:36:52" (1/1) ... [2018-11-18 17:36:53,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:36:52" (1/1) ... [2018-11-18 17:36:53,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 17:36:53,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 17:36:53,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 17:36:53,051 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 17:36:53,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:36:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8e1597ad-7167-48ad-8a69-ed309f50632f/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 17:36:53,093 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 17:36:53,093 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 17:36:53,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-18 17:36:53,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 17:36:53,093 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2018-11-18 17:36:53,093 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2018-11-18 17:36:53,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 17:36:53,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 17:36:53,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-18 17:36:53,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 17:36:53,094 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2018-11-18 17:36:53,094 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2018-11-18 17:36:53,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 17:36:53,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 17:36:53,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 17:36:53,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 17:36:53,329 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 17:36:53,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:36:53 BoogieIcfgContainer [2018-11-18 17:36:53,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 17:36:53,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 17:36:53,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 17:36:53,333 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 17:36:53,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 05:36:52" (1/3) ... [2018-11-18 17:36:53,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@736aa342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:36:53, skipping insertion in model container [2018-11-18 17:36:53,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:36:52" (2/3) ... [2018-11-18 17:36:53,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@736aa342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:36:53, skipping insertion in model container [2018-11-18 17:36:53,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:36:53" (3/3) ... [2018-11-18 17:36:53,335 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032c_true-unreach-call.c [2018-11-18 17:36:53,343 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 17:36:53,350 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 17:36:53,366 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 17:36:53,394 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 17:36:53,394 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 17:36:53,394 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 17:36:53,394 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 17:36:53,395 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 17:36:53,395 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 17:36:53,395 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 17:36:53,395 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 17:36:53,410 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-11-18 17:36:53,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 17:36:53,416 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:36:53,416 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 17:36:53,418 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:36:53,423 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:36:53,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1938672589, now seen corresponding path program 1 times [2018-11-18 17:36:53,425 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:36:53,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:36:53,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:36:53,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:36:53,464 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:36:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:36:53,526 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 17:36:53,528 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:36:53,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 17:36:53,528 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:36:53,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 17:36:53,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 17:36:53,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 17:36:53,549 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2018-11-18 17:36:53,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:36:53,566 INFO L93 Difference]: Finished difference Result 66 states and 89 transitions. [2018-11-18 17:36:53,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 17:36:53,567 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-11-18 17:36:53,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:36:53,578 INFO L225 Difference]: With dead ends: 66 [2018-11-18 17:36:53,578 INFO L226 Difference]: Without dead ends: 33 [2018-11-18 17:36:53,581 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 17:36:53,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-18 17:36:53,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-11-18 17:36:53,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-18 17:36:53,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-11-18 17:36:53,611 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 24 [2018-11-18 17:36:53,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:36:53,611 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-18 17:36:53,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 17:36:53,612 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-11-18 17:36:53,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 17:36:53,612 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:36:53,613 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 17:36:53,613 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:36:53,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:36:53,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1201747331, now seen corresponding path program 1 times [2018-11-18 17:36:53,613 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:36:53,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:36:53,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:36:53,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:36:53,615 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:36:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:36:53,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:36:53,714 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 17:36:53,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 05:36:53 BoogieIcfgContainer [2018-11-18 17:36:53,736 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 17:36:53,737 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 17:36:53,737 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 17:36:53,737 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 17:36:53,737 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:36:53" (3/4) ... [2018-11-18 17:36:53,740 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 17:36:53,740 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 17:36:53,741 INFO L168 Benchmark]: Toolchain (without parser) took 1052.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 959.8 MB in the beginning and 1.1 GB in the end (delta: -124.5 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2018-11-18 17:36:53,742 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:36:53,746 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.55 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 946.4 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-18 17:36:53,747 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.77 ms. Allocated memory is still 1.0 GB. Free memory is still 946.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:36:53,747 INFO L168 Benchmark]: Boogie Preprocessor took 83.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 946.4 MB in the beginning and 1.1 GB in the end (delta: -195.6 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. [2018-11-18 17:36:53,747 INFO L168 Benchmark]: RCFGBuilder took 279.08 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: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 11.5 GB. [2018-11-18 17:36:53,748 INFO L168 Benchmark]: TraceAbstraction took 406.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.3 MB). Peak memory consumption was 32.3 MB. Max. memory is 11.5 GB. [2018-11-18 17:36:53,748 INFO L168 Benchmark]: Witness Printer took 3.79 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 17:36:53,751 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 253.55 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 946.4 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 19.77 ms. Allocated memory is still 1.0 GB. Free memory is still 946.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 83.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 946.4 MB in the beginning and 1.1 GB in the end (delta: -195.6 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 279.08 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: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 406.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.3 MB). Peak memory consumption was 32.3 MB. Max. memory is 11.5 GB. * Witness Printer took 3.79 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: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 42, overapproximation of bitwiseAnd at line 62. Possible FailurePath: [L74] float x = 1.0f / 0.0f; [L75] CALL, EXPR round_float(x) VAL [\old(x)=6442450950] [L12] __uint32_t w; [L14] int exponent_less_127; VAL [\old(x)=6442450950, x=6442450950] [L17] FCALL ieee_float_shape_type gf_u; [L18] FCALL gf_u.value = (x) [L19] EXPR, FCALL gf_u.word [L19] (w) = gf_u.word [L20] COND FALSE !(0) VAL [\old(x)=6442450950, w=2147483652, x=6442450950] [L22] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 VAL [\old(x)=6442450950, exponent_less_127=128, w=2147483652, x=6442450950] [L24] COND FALSE !(exponent_less_127 < 23) VAL [\old(x)=6442450950, exponent_less_127=128, w=2147483652, x=6442450950] [L40] COND TRUE exponent_less_127 == 128 [L42] RET return x + x; VAL [\old(x)=6442450950, exponent_less_127=128, w=2147483652, x=6442450950] [L75] EXPR round_float(x) VAL [round_float(x)=6442450946, x=6442450950] [L75] float res = round_float(x); [L78] CALL, EXPR isinf_float(res) VAL [\old(x)=6442450946] [L56] __int32_t ix; VAL [\old(x)=6442450946, x=6442450946] [L58] FCALL ieee_float_shape_type gf_u; [L59] FCALL gf_u.value = (x) [L60] EXPR, FCALL gf_u.word [L60] (ix) = gf_u.word [L61] COND FALSE !(0) VAL [\old(x)=6442450946, ix=2147483647, x=6442450946] [L62] ix &= 0x7fffffff [L63] RET return ((ix) == 0x7f800000L); VAL [\old(x)=6442450946, \result=0, ix=0, x=6442450946] [L78] EXPR isinf_float(res) VAL [isinf_float(res)=0, res=6442450946, x=6442450950] [L78] COND TRUE !isinf_float(res) [L79] __VERIFIER_error() VAL [res=6442450946, x=6442450950] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 41 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=37occurred 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, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 529 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 17:36:55,538 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 17:36:55,539 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 17:36:55,549 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 17:36:55,549 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 17:36:55,550 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 17:36:55,551 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 17:36:55,552 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 17:36:55,553 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 17:36:55,553 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 17:36:55,554 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 17:36:55,554 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 17:36:55,555 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 17:36:55,556 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 17:36:55,557 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 17:36:55,558 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 17:36:55,559 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 17:36:55,560 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 17:36:55,562 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 17:36:55,563 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 17:36:55,565 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 17:36:55,566 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 17:36:55,568 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 17:36:55,568 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 17:36:55,568 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 17:36:55,569 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 17:36:55,570 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 17:36:55,571 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 17:36:55,572 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 17:36:55,573 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 17:36:55,573 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 17:36:55,574 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 17:36:55,574 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 17:36:55,574 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 17:36:55,575 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 17:36:55,576 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 17:36:55,576 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8e1597ad-7167-48ad-8a69-ed309f50632f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-18 17:36:55,589 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 17:36:55,589 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 17:36:55,590 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 17:36:55,590 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 17:36:55,591 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 17:36:55,591 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 17:36:55,591 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 17:36:55,591 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 17:36:55,591 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 17:36:55,591 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 17:36:55,592 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 17:36:55,592 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 17:36:55,592 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 17:36:55,592 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 17:36:55,593 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 17:36:55,593 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 17:36:55,593 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 17:36:55,593 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 17:36:55,593 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 17:36:55,593 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 17:36:55,593 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 17:36:55,594 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 17:36:55,594 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 17:36:55,594 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 17:36:55,594 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 17:36:55,594 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 17:36:55,594 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 17:36:55,595 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:36:55,595 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 17:36:55,595 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 17:36:55,595 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 17:36:55,595 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 17:36:55,595 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 17:36:55,595 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 17:36:55,596 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 17:36:55,596 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_8e1597ad-7167-48ad-8a69-ed309f50632f/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 -> b4428fa1091f4cda8c57d8e78988385def4dacf9 [2018-11-18 17:36:55,633 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 17:36:55,644 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 17:36:55,647 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 17:36:55,649 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 17:36:55,649 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 17:36:55,650 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8e1597ad-7167-48ad-8a69-ed309f50632f/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1032c_true-unreach-call.c [2018-11-18 17:36:55,712 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8e1597ad-7167-48ad-8a69-ed309f50632f/bin-2019/utaipan/data/287dd03fc/613c1b7b6bce45f6b49a6d9671796114/FLAG59988a861 [2018-11-18 17:36:56,093 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 17:36:56,093 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8e1597ad-7167-48ad-8a69-ed309f50632f/sv-benchmarks/c/float-newlib/float_req_bl_1032c_true-unreach-call.c [2018-11-18 17:36:56,099 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8e1597ad-7167-48ad-8a69-ed309f50632f/bin-2019/utaipan/data/287dd03fc/613c1b7b6bce45f6b49a6d9671796114/FLAG59988a861 [2018-11-18 17:36:56,110 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8e1597ad-7167-48ad-8a69-ed309f50632f/bin-2019/utaipan/data/287dd03fc/613c1b7b6bce45f6b49a6d9671796114 [2018-11-18 17:36:56,113 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 17:36:56,114 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 17:36:56,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 17:36:56,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 17:36:56,118 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 17:36:56,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:36:56" (1/1) ... [2018-11-18 17:36:56,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18dbaebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:36:56, skipping insertion in model container [2018-11-18 17:36:56,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:36:56" (1/1) ... [2018-11-18 17:36:56,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 17:36:56,150 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 17:36:56,334 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:36:56,338 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 17:36:56,363 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:36:56,386 INFO L195 MainTranslator]: Completed translation [2018-11-18 17:36:56,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:36:56 WrapperNode [2018-11-18 17:36:56,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 17:36:56,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 17:36:56,387 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 17:36:56,387 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 17:36:56,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:36:56" (1/1) ... [2018-11-18 17:36:56,405 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:36:56" (1/1) ... [2018-11-18 17:36:56,411 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 17:36:56,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 17:36:56,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 17:36:56,412 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 17:36:56,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:36:56" (1/1) ... [2018-11-18 17:36:56,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:36:56" (1/1) ... [2018-11-18 17:36:56,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:36:56" (1/1) ... [2018-11-18 17:36:56,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:36:56" (1/1) ... [2018-11-18 17:36:56,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:36:56" (1/1) ... [2018-11-18 17:36:56,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:36:56" (1/1) ... [2018-11-18 17:36:56,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:36:56" (1/1) ... [2018-11-18 17:36:56,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 17:36:56,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 17:36:56,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 17:36:56,448 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 17:36:56,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:36:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8e1597ad-7167-48ad-8a69-ed309f50632f/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 17:36:56,557 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 17:36:56,557 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 17:36:56,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-11-18 17:36:56,557 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2018-11-18 17:36:56,558 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2018-11-18 17:36:56,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 17:36:56,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 17:36:56,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 17:36:56,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 17:36:56,558 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2018-11-18 17:36:56,558 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2018-11-18 17:36:56,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 17:36:56,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 17:36:56,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-18 17:36:56,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 17:36:56,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 17:36:56,769 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 17:36:56,821 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 17:36:56,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:36:56 BoogieIcfgContainer [2018-11-18 17:36:56,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 17:36:56,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 17:36:56,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 17:36:56,825 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 17:36:56,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 05:36:56" (1/3) ... [2018-11-18 17:36:56,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9aaf65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:36:56, skipping insertion in model container [2018-11-18 17:36:56,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:36:56" (2/3) ... [2018-11-18 17:36:56,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9aaf65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:36:56, skipping insertion in model container [2018-11-18 17:36:56,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:36:56" (3/3) ... [2018-11-18 17:36:56,829 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032c_true-unreach-call.c [2018-11-18 17:36:56,839 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 17:36:56,847 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 17:36:56,864 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 17:36:56,892 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 17:36:56,893 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 17:36:56,893 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 17:36:56,893 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 17:36:56,893 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 17:36:56,893 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 17:36:56,893 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 17:36:56,894 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 17:36:56,894 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 17:36:56,910 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2018-11-18 17:36:56,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 17:36:56,916 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:36:56,917 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 17:36:56,919 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:36:56,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:36:56,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1479900989, now seen corresponding path program 1 times [2018-11-18 17:36:56,929 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 17:36:56,929 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8e1597ad-7167-48ad-8a69-ed309f50632f/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 17:36:56,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:36:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:36:57,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:36:57,028 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 17:36:57,028 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:36:57,042 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:36:57,042 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 17:36:57,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 17:36:57,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 17:36:57,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 17:36:57,056 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2018-11-18 17:36:57,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:36:57,078 INFO L93 Difference]: Finished difference Result 64 states and 87 transitions. [2018-11-18 17:36:57,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 17:36:57,080 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2018-11-18 17:36:57,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:36:57,089 INFO L225 Difference]: With dead ends: 64 [2018-11-18 17:36:57,089 INFO L226 Difference]: Without dead ends: 32 [2018-11-18 17:36:57,093 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 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 17:36:57,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-18 17:36:57,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-11-18 17:36:57,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-18 17:36:57,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2018-11-18 17:36:57,133 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2018-11-18 17:36:57,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:36:57,134 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2018-11-18 17:36:57,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 17:36:57,135 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2018-11-18 17:36:57,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 17:36:57,135 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:36:57,136 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] [2018-11-18 17:36:57,136 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:36:57,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:36:57,137 INFO L82 PathProgramCache]: Analyzing trace with hash -691551121, now seen corresponding path program 1 times [2018-11-18 17:36:57,137 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 17:36:57,137 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8e1597ad-7167-48ad-8a69-ed309f50632f/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 17:36:57,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:36:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:36:57,216 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:36:58,288 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 17:36:58,289 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:36:58,314 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:36:58,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-11-18 17:36:58,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 17:36:58,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 17:36:58,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-11-18 17:36:58,316 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 11 states. [2018-11-18 17:36:58,803 WARN L180 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-18 17:36:59,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:36:59,835 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2018-11-18 17:36:59,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 17:36:59,836 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-11-18 17:36:59,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:36:59,838 INFO L225 Difference]: With dead ends: 41 [2018-11-18 17:36:59,839 INFO L226 Difference]: Without dead ends: 34 [2018-11-18 17:36:59,840 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2018-11-18 17:36:59,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-18 17:36:59,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2018-11-18 17:36:59,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-18 17:36:59,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2018-11-18 17:36:59,849 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 25 [2018-11-18 17:36:59,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:36:59,849 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2018-11-18 17:36:59,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 17:36:59,850 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2018-11-18 17:36:59,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 17:36:59,850 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:36:59,851 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] [2018-11-18 17:36:59,851 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:36:59,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:36:59,851 INFO L82 PathProgramCache]: Analyzing trace with hash -984954128, now seen corresponding path program 1 times [2018-11-18 17:36:59,852 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 17:36:59,852 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8e1597ad-7167-48ad-8a69-ed309f50632f/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 17:36:59,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:36:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:36:59,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:37:00,009 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 17:37:00,010 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:37:00,022 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:37:00,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 17:37:00,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 17:37:00,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 17:37:00,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 17:37:00,024 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 7 states. [2018-11-18 17:37:00,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:37:00,331 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2018-11-18 17:37:00,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 17:37:00,332 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2018-11-18 17:37:00,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:37:00,332 INFO L225 Difference]: With dead ends: 34 [2018-11-18 17:37:00,333 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 17:37:00,333 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-11-18 17:37:00,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 17:37:00,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 17:37:00,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 17:37:00,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 17:37:00,334 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-11-18 17:37:00,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:37:00,334 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 17:37:00,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 17:37:00,334 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 17:37:00,334 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 17:37:00,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 17:37:00,401 INFO L425 ceAbstractionStarter]: For program point L57-1(lines 57 61) no Hoare annotation was computed. [2018-11-18 17:37:00,401 INFO L421 ceAbstractionStarter]: At program point L57-3(lines 57 61) the Hoare annotation is: (= |isinf_float_#in~x| isinf_float_~x) [2018-11-18 17:37:00,401 INFO L425 ceAbstractionStarter]: For program point L57-4(lines 57 61) no Hoare annotation was computed. [2018-11-18 17:37:00,401 INFO L428 ceAbstractionStarter]: At program point isinf_floatENTRY(lines 55 64) the Hoare annotation is: true [2018-11-18 17:37:00,402 INFO L425 ceAbstractionStarter]: For program point isinf_floatEXIT(lines 55 64) no Hoare annotation was computed. [2018-11-18 17:37:00,402 INFO L425 ceAbstractionStarter]: For program point isinf_floatFINAL(lines 55 64) no Hoare annotation was computed. [2018-11-18 17:37:00,402 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 17:37:00,402 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 17:37:00,402 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 17:37:00,402 INFO L428 ceAbstractionStarter]: At program point round_floatENTRY(lines 11 52) the Hoare annotation is: true [2018-11-18 17:37:00,402 INFO L425 ceAbstractionStarter]: For program point L27(lines 27 29) no Hoare annotation was computed. [2018-11-18 17:37:00,403 INFO L425 ceAbstractionStarter]: For program point L25(lines 25 38) no Hoare annotation was computed. [2018-11-18 17:37:00,403 INFO L425 ceAbstractionStarter]: For program point L46(lines 46 50) no Hoare annotation was computed. [2018-11-18 17:37:00,403 INFO L425 ceAbstractionStarter]: For program point L46-2(lines 11 52) no Hoare annotation was computed. [2018-11-18 17:37:00,403 INFO L425 ceAbstractionStarter]: For program point L46-3(lines 46 50) no Hoare annotation was computed. [2018-11-18 17:37:00,403 INFO L425 ceAbstractionStarter]: For program point round_floatFINAL(lines 11 52) no Hoare annotation was computed. [2018-11-18 17:37:00,403 INFO L425 ceAbstractionStarter]: For program point L40(lines 40 44) no Hoare annotation was computed. [2018-11-18 17:37:00,403 INFO L425 ceAbstractionStarter]: For program point L32(lines 32 34) no Hoare annotation was computed. [2018-11-18 17:37:00,403 INFO L425 ceAbstractionStarter]: For program point round_floatEXIT(lines 11 52) no Hoare annotation was computed. [2018-11-18 17:37:00,403 INFO L425 ceAbstractionStarter]: For program point L24(lines 24 45) no Hoare annotation was computed. [2018-11-18 17:37:00,403 INFO L425 ceAbstractionStarter]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2018-11-18 17:37:00,403 INFO L421 ceAbstractionStarter]: At program point L16-3(lines 16 20) the Hoare annotation is: (= round_float_~x |round_float_#in~x|) [2018-11-18 17:37:00,404 INFO L425 ceAbstractionStarter]: For program point L16-4(lines 16 20) no Hoare annotation was computed. [2018-11-18 17:37:00,404 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 17:37:00,404 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 17:37:00,404 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 17:37:00,404 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 17:37:00,404 INFO L425 ceAbstractionStarter]: For program point L79(line 79) no Hoare annotation was computed. [2018-11-18 17:37:00,404 INFO L421 ceAbstractionStarter]: At program point L78(line 78) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven 1.0) (_ +zero 8 24)))) (and (= main_~res~0 (fp.add roundNearestTiesToEven .cse0 .cse0)) (= main_~x~0 .cse0))) [2018-11-18 17:37:00,404 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 66 84) the Hoare annotation is: true [2018-11-18 17:37:00,404 INFO L425 ceAbstractionStarter]: For program point L78-1(lines 78 81) no Hoare annotation was computed. [2018-11-18 17:37:00,404 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 66 84) no Hoare annotation was computed. [2018-11-18 17:37:00,405 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 79) no Hoare annotation was computed. [2018-11-18 17:37:00,405 INFO L421 ceAbstractionStarter]: At program point L75(line 75) the Hoare annotation is: (= main_~x~0 (fp.div roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven 1.0) (_ +zero 8 24))) [2018-11-18 17:37:00,405 INFO L425 ceAbstractionStarter]: For program point L75-1(line 75) no Hoare annotation was computed. [2018-11-18 17:37:00,405 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 66 84) no Hoare annotation was computed. [2018-11-18 17:37:00,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 05:37:00 BoogieIcfgContainer [2018-11-18 17:37:00,415 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 17:37:00,415 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 17:37:00,415 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 17:37:00,416 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 17:37:00,416 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:36:56" (3/4) ... [2018-11-18 17:37:00,419 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 17:37:00,424 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isinf_float [2018-11-18 17:37:00,424 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 17:37:00,424 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure round_float [2018-11-18 17:37:00,425 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 17:37:00,429 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2018-11-18 17:37:00,430 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-11-18 17:37:00,430 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 17:37:00,453 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x == \old(x) [2018-11-18 17:37:00,453 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-11-18 17:37:00,472 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_8e1597ad-7167-48ad-8a69-ed309f50632f/bin-2019/utaipan/witness.graphml [2018-11-18 17:37:00,472 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 17:37:00,473 INFO L168 Benchmark]: Toolchain (without parser) took 4359.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 954.6 MB in the beginning and 970.8 MB in the end (delta: -16.2 MB). Peak memory consumption was 112.7 MB. Max. memory is 11.5 GB. [2018-11-18 17:37:00,474 INFO L168 Benchmark]: CDTParser took 0.19 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 17:37:00,474 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.79 ms. Allocated memory is still 1.0 GB. Free memory was 954.6 MB in the beginning and 938.5 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 17:37:00,474 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.55 ms. Allocated memory is still 1.0 GB. Free memory is still 938.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:37:00,475 INFO L168 Benchmark]: Boogie Preprocessor took 35.88 ms. Allocated memory is still 1.0 GB. Free memory is still 938.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:37:00,475 INFO L168 Benchmark]: RCFGBuilder took 373.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 938.5 MB in the beginning and 1.1 GB in the end (delta: -155.9 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. [2018-11-18 17:37:00,476 INFO L168 Benchmark]: TraceAbstraction took 3592.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 970.8 MB in the end (delta: 123.5 MB). Peak memory consumption was 123.5 MB. Max. memory is 11.5 GB. [2018-11-18 17:37:00,476 INFO L168 Benchmark]: Witness Printer took 57.01 ms. Allocated memory is still 1.2 GB. Free memory is still 970.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:37:00,480 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 271.79 ms. Allocated memory is still 1.0 GB. Free memory was 954.6 MB in the beginning and 938.5 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 24.55 ms. Allocated memory is still 1.0 GB. Free memory is still 938.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.88 ms. Allocated memory is still 1.0 GB. Free memory is still 938.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 373.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 938.5 MB in the beginning and 1.1 GB in the end (delta: -155.9 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3592.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 970.8 MB in the end (delta: 123.5 MB). Peak memory consumption was 123.5 MB. Max. memory is 11.5 GB. * Witness Printer took 57.01 ms. Allocated memory is still 1.2 GB. Free memory is still 970.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 79]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: x == \old(x) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 36 locations, 1 error locations. SAFE Result, 3.5s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 1.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 80 SDtfs, 53 SDslu, 256 SDs, 0 SdLazy, 137 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 14 PreInvPairs, 17 NumberOfFragments, 45 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 70 ConstructedInterpolants, 6 QuantifiedInterpolants, 8116 SizeOfPredicates, 9 NumberOfNonLiveVariables, 187 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...