./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1010_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_8c4ecf3f-cb25-4235-a866-909d3916f774/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8c4ecf3f-cb25-4235-a866-909d3916f774/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8c4ecf3f-cb25-4235-a866-909d3916f774/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8c4ecf3f-cb25-4235-a866-909d3916f774/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1010_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_8c4ecf3f-cb25-4235-a866-909d3916f774/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8c4ecf3f-cb25-4235-a866-909d3916f774/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 70ee165c745ab937eeca69bc762f66bcb3efe6fa .................................................................................................................................................................................................................................................................................................................. 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_8c4ecf3f-cb25-4235-a866-909d3916f774/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8c4ecf3f-cb25-4235-a866-909d3916f774/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8c4ecf3f-cb25-4235-a866-909d3916f774/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8c4ecf3f-cb25-4235-a866-909d3916f774/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1010_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_8c4ecf3f-cb25-4235-a866-909d3916f774/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8c4ecf3f-cb25-4235-a866-909d3916f774/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 70ee165c745ab937eeca69bc762f66bcb3efe6fa ............................................................................................................................................................................................................................................................................................................................................... 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 17:46:23,119 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 17:46:23,119 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 17:46:23,127 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 17:46:23,127 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 17:46:23,128 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 17:46:23,129 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 17:46:23,130 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 17:46:23,131 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 17:46:23,131 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 17:46:23,132 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 17:46:23,132 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 17:46:23,132 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 17:46:23,133 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 17:46:23,133 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 17:46:23,134 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 17:46:23,134 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 17:46:23,135 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 17:46:23,136 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 17:46:23,137 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 17:46:23,137 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 17:46:23,138 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 17:46:23,139 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 17:46:23,139 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 17:46:23,139 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 17:46:23,140 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 17:46:23,141 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 17:46:23,141 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 17:46:23,142 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 17:46:23,143 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 17:46:23,143 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 17:46:23,143 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 17:46:23,144 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 17:46:23,144 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 17:46:23,144 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 17:46:23,145 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 17:46:23,145 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8c4ecf3f-cb25-4235-a866-909d3916f774/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 17:46:23,154 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 17:46:23,155 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 17:46:23,155 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 17:46:23,155 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 17:46:23,155 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 17:46:23,156 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 17:46:23,156 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 17:46:23,156 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 17:46:23,156 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 17:46:23,156 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 17:46:23,156 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 17:46:23,157 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 17:46:23,157 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 17:46:23,157 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 17:46:23,157 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 17:46:23,158 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 17:46:23,158 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 17:46:23,158 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 17:46:23,158 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 17:46:23,158 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 17:46:23,158 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 17:46:23,159 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 17:46:23,159 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 17:46:23,159 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 17:46:23,159 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 17:46:23,159 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 17:46:23,159 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 17:46:23,159 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 17:46:23,160 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 17:46:23,160 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:46:23,160 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 17:46:23,160 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 17:46:23,160 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 17:46:23,160 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 17:46:23,160 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 17:46:23,161 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 17:46:23,161 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 17:46:23,161 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_8c4ecf3f-cb25-4235-a866-909d3916f774/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 -> 70ee165c745ab937eeca69bc762f66bcb3efe6fa [2018-11-18 17:46:23,184 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 17:46:23,192 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 17:46:23,194 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 17:46:23,195 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 17:46:23,195 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 17:46:23,196 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8c4ecf3f-cb25-4235-a866-909d3916f774/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1010_true-unreach-call.c [2018-11-18 17:46:23,231 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8c4ecf3f-cb25-4235-a866-909d3916f774/bin-2019/utaipan/data/0d07907e2/8a880a0751bf4185a8707934e1e9df3e/FLAG96489939b [2018-11-18 17:46:23,626 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 17:46:23,626 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8c4ecf3f-cb25-4235-a866-909d3916f774/sv-benchmarks/c/float-newlib/float_req_bl_1010_true-unreach-call.c [2018-11-18 17:46:23,630 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8c4ecf3f-cb25-4235-a866-909d3916f774/bin-2019/utaipan/data/0d07907e2/8a880a0751bf4185a8707934e1e9df3e/FLAG96489939b [2018-11-18 17:46:23,639 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8c4ecf3f-cb25-4235-a866-909d3916f774/bin-2019/utaipan/data/0d07907e2/8a880a0751bf4185a8707934e1e9df3e [2018-11-18 17:46:23,641 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 17:46:23,641 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 17:46:23,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 17:46:23,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 17:46:23,645 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 17:46:23,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:46:23" (1/1) ... [2018-11-18 17:46:23,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f003888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:46:23, skipping insertion in model container [2018-11-18 17:46:23,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:46:23" (1/1) ... [2018-11-18 17:46:23,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 17:46:23,667 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 17:46:23,777 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:46:23,779 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 17:46:23,791 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:46:23,803 INFO L195 MainTranslator]: Completed translation [2018-11-18 17:46:23,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:46:23 WrapperNode [2018-11-18 17:46:23,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 17:46:23,804 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 17:46:23,804 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 17:46:23,804 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 17:46:23,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:46:23" (1/1) ... [2018-11-18 17:46:23,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:46:23" (1/1) ... [2018-11-18 17:46:23,820 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 17:46:23,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 17:46:23,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 17:46:23,820 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 17:46:23,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:46:23" (1/1) ... [2018-11-18 17:46:23,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:46:23" (1/1) ... [2018-11-18 17:46:23,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:46:23" (1/1) ... [2018-11-18 17:46:23,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:46:23" (1/1) ... [2018-11-18 17:46:23,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:46:23" (1/1) ... [2018-11-18 17:46:23,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:46:23" (1/1) ... [2018-11-18 17:46:23,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:46:23" (1/1) ... [2018-11-18 17:46:23,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 17:46:23,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 17:46:23,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 17:46:23,876 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 17:46:23,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:46:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8c4ecf3f-cb25-4235-a866-909d3916f774/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 17:46:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 17:46:23,927 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 17:46:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-18 17:46:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 17:46:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-18 17:46:23,927 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-18 17:46:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 17:46:23,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 17:46:23,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-18 17:46:23,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 17:46:23,928 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-11-18 17:46:23,928 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-11-18 17:46:23,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 17:46:23,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 17:46:23,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 17:46:23,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 17:46:24,067 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 17:46:24,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:46:24 BoogieIcfgContainer [2018-11-18 17:46:24,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 17:46:24,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 17:46:24,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 17:46:24,071 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 17:46:24,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 05:46:23" (1/3) ... [2018-11-18 17:46:24,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a35e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:46:24, skipping insertion in model container [2018-11-18 17:46:24,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:46:23" (2/3) ... [2018-11-18 17:46:24,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a35e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:46:24, skipping insertion in model container [2018-11-18 17:46:24,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:46:24" (3/3) ... [2018-11-18 17:46:24,074 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1010_true-unreach-call.c [2018-11-18 17:46:24,082 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 17:46:24,089 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 17:46:24,103 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 17:46:24,129 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 17:46:24,130 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 17:46:24,130 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 17:46:24,130 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 17:46:24,130 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 17:46:24,130 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 17:46:24,130 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 17:46:24,130 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 17:46:24,145 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-11-18 17:46:24,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 17:46:24,150 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:46:24,151 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:46:24,153 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:46:24,159 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:46:24,159 INFO L82 PathProgramCache]: Analyzing trace with hash 2087573030, now seen corresponding path program 1 times [2018-11-18 17:46:24,161 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:46:24,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:46:24,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:46:24,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:46:24,201 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:46:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:46:24,261 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 17:46:24,262 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:46:24,263 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 17:46:24,263 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:46:24,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 17:46:24,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 17:46:24,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 17:46:24,279 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2018-11-18 17:46:24,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:46:24,295 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2018-11-18 17:46:24,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 17:46:24,296 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-18 17:46:24,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:46:24,304 INFO L225 Difference]: With dead ends: 48 [2018-11-18 17:46:24,304 INFO L226 Difference]: Without dead ends: 24 [2018-11-18 17:46:24,307 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 17:46:24,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-18 17:46:24,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-18 17:46:24,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-18 17:46:24,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 23 transitions. [2018-11-18 17:46:24,337 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 23 transitions. Word has length 21 [2018-11-18 17:46:24,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:46:24,338 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 23 transitions. [2018-11-18 17:46:24,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 17:46:24,338 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2018-11-18 17:46:24,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 17:46:24,339 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:46:24,339 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 17:46:24,339 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:46:24,339 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:46:24,339 INFO L82 PathProgramCache]: Analyzing trace with hash -283999958, now seen corresponding path program 1 times [2018-11-18 17:46:24,340 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:46:24,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:46:24,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:46:24,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:46:24,341 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:46:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:46:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:46:24,395 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 17:46:24,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 05:46:24 BoogieIcfgContainer [2018-11-18 17:46:24,412 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 17:46:24,412 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 17:46:24,412 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 17:46:24,412 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 17:46:24,412 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:46:24" (3/4) ... [2018-11-18 17:46:24,415 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 17:46:24,415 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 17:46:24,415 INFO L168 Benchmark]: Toolchain (without parser) took 774.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 959.2 MB in the beginning and 1.1 GB in the end (delta: -127.4 MB). Peak memory consumption was 5.7 MB. Max. memory is 11.5 GB. [2018-11-18 17:46:24,416 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:46:24,417 INFO L168 Benchmark]: CACSL2BoogieTranslator took 161.99 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 17:46:24,417 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.84 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 17:46:24,417 INFO L168 Benchmark]: Boogie Preprocessor took 54.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -187.4 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-18 17:46:24,418 INFO L168 Benchmark]: RCFGBuilder took 192.06 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2018-11-18 17:46:24,418 INFO L168 Benchmark]: TraceAbstraction took 343.85 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: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 11.5 GB. [2018-11-18 17:46:24,418 INFO L168 Benchmark]: Witness Printer took 2.91 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 17:46:24,421 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 161.99 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.84 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 54.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -187.4 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 192.06 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 343.85 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: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 11.5 GB. * Witness Printer took 2.91 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: 40]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 12, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseAnd at line 23. Possible FailurePath: [L35] float x = 0.0f / 0.0f; [L36] CALL, EXPR fabs_float(x) VAL [\old(x)=11] [L15] __uint32_t ix; VAL [\old(x)=11, x=11] [L17] FCALL ieee_float_shape_type gf_u; [L18] FCALL gf_u.value = (x) [L19] EXPR, FCALL gf_u.word [L19] (ix) = gf_u.word [L20] COND FALSE !(0) VAL [\old(x)=11, ix=9, x=11] [L22] FCALL ieee_float_shape_type sf_u; [L23] FCALL sf_u.word = (ix & 0x7fffffff) [L24] EXPR, FCALL sf_u.value [L24] (x) = sf_u.value [L25] COND FALSE !(0) VAL [\old(x)=11, ix=9, x=13] [L26] RET return x; VAL [\old(x)=11, \result=13, ix=9, x=13] [L36] EXPR fabs_float(x) VAL [fabs_float(x)=13, x=11] [L36] float res = fabs_float(x); [L39] CALL, EXPR isnan_float(res) VAL [\old(x)=13] [L12] RET return x != x; VAL [\old(x)=13, \result=0, x=13] [L39] EXPR isnan_float(res) VAL [isnan_float(res)=0, res=13, x=11] [L39] COND TRUE !isnan_float(res) [L40] __VERIFIER_error() VAL [res=13, x=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 27 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=28occurred 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, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 400 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 17:46:25,849 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 17:46:25,850 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 17:46:25,859 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 17:46:25,859 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 17:46:25,860 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 17:46:25,861 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 17:46:25,862 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 17:46:25,863 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 17:46:25,864 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 17:46:25,864 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 17:46:25,865 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 17:46:25,865 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 17:46:25,866 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 17:46:25,867 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 17:46:25,868 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 17:46:25,868 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 17:46:25,869 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 17:46:25,871 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 17:46:25,872 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 17:46:25,873 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 17:46:25,873 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 17:46:25,875 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 17:46:25,875 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 17:46:25,875 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 17:46:25,876 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 17:46:25,877 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 17:46:25,877 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 17:46:25,878 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 17:46:25,878 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 17:46:25,879 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 17:46:25,879 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 17:46:25,879 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 17:46:25,879 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 17:46:25,880 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 17:46:25,881 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 17:46:25,881 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8c4ecf3f-cb25-4235-a866-909d3916f774/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-18 17:46:25,891 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 17:46:25,891 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 17:46:25,892 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 17:46:25,892 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 17:46:25,893 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 17:46:25,893 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 17:46:25,893 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 17:46:25,893 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 17:46:25,893 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 17:46:25,893 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 17:46:25,894 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 17:46:25,894 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 17:46:25,894 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 17:46:25,894 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 17:46:25,895 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 17:46:25,895 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 17:46:25,895 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 17:46:25,895 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 17:46:25,895 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 17:46:25,895 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 17:46:25,895 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 17:46:25,895 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 17:46:25,896 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 17:46:25,896 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 17:46:25,896 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 17:46:25,896 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 17:46:25,896 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 17:46:25,896 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:46:25,897 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 17:46:25,897 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 17:46:25,897 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 17:46:25,897 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 17:46:25,897 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 17:46:25,897 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 17:46:25,897 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 17:46:25,897 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_8c4ecf3f-cb25-4235-a866-909d3916f774/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 -> 70ee165c745ab937eeca69bc762f66bcb3efe6fa [2018-11-18 17:46:25,927 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 17:46:25,936 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 17:46:25,939 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 17:46:25,940 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 17:46:25,940 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 17:46:25,941 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8c4ecf3f-cb25-4235-a866-909d3916f774/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1010_true-unreach-call.c [2018-11-18 17:46:25,984 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8c4ecf3f-cb25-4235-a866-909d3916f774/bin-2019/utaipan/data/85c299689/648e4137ac9247dcb22cb1c584bacb10/FLAG76a0ffaa8 [2018-11-18 17:46:26,305 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 17:46:26,305 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8c4ecf3f-cb25-4235-a866-909d3916f774/sv-benchmarks/c/float-newlib/float_req_bl_1010_true-unreach-call.c [2018-11-18 17:46:26,309 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8c4ecf3f-cb25-4235-a866-909d3916f774/bin-2019/utaipan/data/85c299689/648e4137ac9247dcb22cb1c584bacb10/FLAG76a0ffaa8 [2018-11-18 17:46:26,740 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8c4ecf3f-cb25-4235-a866-909d3916f774/bin-2019/utaipan/data/85c299689/648e4137ac9247dcb22cb1c584bacb10 [2018-11-18 17:46:26,742 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 17:46:26,743 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 17:46:26,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 17:46:26,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 17:46:26,745 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 17:46:26,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:46:26" (1/1) ... [2018-11-18 17:46:26,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cc3b22b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:46:26, skipping insertion in model container [2018-11-18 17:46:26,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:46:26" (1/1) ... [2018-11-18 17:46:26,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 17:46:26,765 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 17:46:26,876 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:46:26,880 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 17:46:26,894 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:46:26,910 INFO L195 MainTranslator]: Completed translation [2018-11-18 17:46:26,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:46:26 WrapperNode [2018-11-18 17:46:26,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 17:46:26,911 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 17:46:26,911 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 17:46:26,911 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 17:46:26,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:46:26" (1/1) ... [2018-11-18 17:46:26,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:46:26" (1/1) ... [2018-11-18 17:46:26,926 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 17:46:26,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 17:46:26,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 17:46:26,927 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 17:46:26,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:46:26" (1/1) ... [2018-11-18 17:46:26,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:46:26" (1/1) ... [2018-11-18 17:46:26,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:46:26" (1/1) ... [2018-11-18 17:46:26,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:46:26" (1/1) ... [2018-11-18 17:46:26,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:46:26" (1/1) ... [2018-11-18 17:46:26,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:46:26" (1/1) ... [2018-11-18 17:46:26,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:46:26" (1/1) ... [2018-11-18 17:46:26,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 17:46:26,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 17:46:26,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 17:46:26,945 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 17:46:26,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:46:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8c4ecf3f-cb25-4235-a866-909d3916f774/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 17:46:27,016 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 17:46:27,016 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 17:46:27,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-11-18 17:46:27,016 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-18 17:46:27,017 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-18 17:46:27,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 17:46:27,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 17:46:27,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 17:46:27,017 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-11-18 17:46:27,017 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-11-18 17:46:27,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 17:46:27,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 17:46:27,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 17:46:27,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-18 17:46:27,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 17:46:27,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 17:46:27,176 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 17:46:27,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:46:27 BoogieIcfgContainer [2018-11-18 17:46:27,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 17:46:27,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 17:46:27,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 17:46:27,179 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 17:46:27,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 05:46:26" (1/3) ... [2018-11-18 17:46:27,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5737d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:46:27, skipping insertion in model container [2018-11-18 17:46:27,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:46:26" (2/3) ... [2018-11-18 17:46:27,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5737d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:46:27, skipping insertion in model container [2018-11-18 17:46:27,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:46:27" (3/3) ... [2018-11-18 17:46:27,182 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1010_true-unreach-call.c [2018-11-18 17:46:27,188 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 17:46:27,193 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 17:46:27,202 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 17:46:27,223 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 17:46:27,224 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 17:46:27,224 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 17:46:27,224 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 17:46:27,224 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 17:46:27,224 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 17:46:27,224 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 17:46:27,224 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 17:46:27,224 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 17:46:27,235 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-11-18 17:46:27,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 17:46:27,238 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:46:27,239 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] [2018-11-18 17:46:27,240 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:46:27,243 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:46:27,244 INFO L82 PathProgramCache]: Analyzing trace with hash -662660666, now seen corresponding path program 1 times [2018-11-18 17:46:27,246 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 17:46:27,247 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8c4ecf3f-cb25-4235-a866-909d3916f774/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 17:46:27,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:46:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:46:27,289 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:46:27,300 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 17:46:27,300 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:46:27,308 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:46:27,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 17:46:27,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 17:46:27,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 17:46:27,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 17:46:27,325 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2018-11-18 17:46:27,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:46:27,338 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2018-11-18 17:46:27,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 17:46:27,339 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2018-11-18 17:46:27,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:46:27,346 INFO L225 Difference]: With dead ends: 46 [2018-11-18 17:46:27,346 INFO L226 Difference]: Without dead ends: 23 [2018-11-18 17:46:27,349 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 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 17:46:27,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-18 17:46:27,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-11-18 17:46:27,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-18 17:46:27,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2018-11-18 17:46:27,375 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 20 [2018-11-18 17:46:27,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:46:27,376 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2018-11-18 17:46:27,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 17:46:27,376 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2018-11-18 17:46:27,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 17:46:27,377 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:46:27,377 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 17:46:27,377 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:46:27,377 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:46:27,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1916796354, now seen corresponding path program 1 times [2018-11-18 17:46:27,378 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 17:46:27,378 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8c4ecf3f-cb25-4235-a866-909d3916f774/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 17:46:27,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:46:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:46:27,424 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:46:27,686 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 17:46:27,686 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:46:27,693 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:46:27,693 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-11-18 17:46:27,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 17:46:27,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 17:46:27,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-11-18 17:46:27,694 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand 11 states. [2018-11-18 17:46:28,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:46:28,085 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2018-11-18 17:46:28,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 17:46:28,085 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2018-11-18 17:46:28,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:46:28,086 INFO L225 Difference]: With dead ends: 23 [2018-11-18 17:46:28,086 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 17:46:28,087 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2018-11-18 17:46:28,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 17:46:28,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 17:46:28,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 17:46:28,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 17:46:28,088 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2018-11-18 17:46:28,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:46:28,088 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 17:46:28,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 17:46:28,088 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 17:46:28,088 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 17:46:28,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 17:46:28,142 INFO L425 ceAbstractionStarter]: For program point isnan_floatFINAL(line 12) no Hoare annotation was computed. [2018-11-18 17:46:28,142 INFO L428 ceAbstractionStarter]: At program point isnan_floatENTRY(line 12) the Hoare annotation is: true [2018-11-18 17:46:28,142 INFO L425 ceAbstractionStarter]: For program point isnan_floatEXIT(line 12) no Hoare annotation was computed. [2018-11-18 17:46:28,142 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 17:46:28,142 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 17:46:28,142 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 17:46:28,143 INFO L425 ceAbstractionStarter]: For program point fabs_floatEXIT(lines 14 27) no Hoare annotation was computed. [2018-11-18 17:46:28,143 INFO L425 ceAbstractionStarter]: For program point L21(lines 21 25) no Hoare annotation was computed. [2018-11-18 17:46:28,143 INFO L425 ceAbstractionStarter]: For program point L21-2(lines 14 27) no Hoare annotation was computed. [2018-11-18 17:46:28,143 INFO L425 ceAbstractionStarter]: For program point L21-3(lines 21 25) no Hoare annotation was computed. [2018-11-18 17:46:28,143 INFO L425 ceAbstractionStarter]: For program point fabs_floatFINAL(lines 14 27) no Hoare annotation was computed. [2018-11-18 17:46:28,143 INFO L428 ceAbstractionStarter]: At program point fabs_floatENTRY(lines 14 27) the Hoare annotation is: true [2018-11-18 17:46:28,143 INFO L425 ceAbstractionStarter]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2018-11-18 17:46:28,143 INFO L421 ceAbstractionStarter]: At program point L16-3(lines 16 20) the Hoare annotation is: (= fabs_float_~x |fabs_float_#in~x|) [2018-11-18 17:46:28,143 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 17:46:28,143 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 17:46:28,143 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 17:46:28,143 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 17:46:28,144 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 40) no Hoare annotation was computed. [2018-11-18 17:46:28,144 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 29 45) the Hoare annotation is: true [2018-11-18 17:46:28,144 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 29 45) no Hoare annotation was computed. [2018-11-18 17:46:28,144 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 29 45) no Hoare annotation was computed. [2018-11-18 17:46:28,144 INFO L425 ceAbstractionStarter]: For program point L40(line 40) no Hoare annotation was computed. [2018-11-18 17:46:28,144 INFO L421 ceAbstractionStarter]: At program point L39(line 39) the Hoare annotation is: (and (exists ((fabs_float_~ix~0 (_ BitVec 32))) (and (= (fp ((_ extract 31 31) fabs_float_~ix~0) ((_ extract 30 23) fabs_float_~ix~0) ((_ extract 22 0) fabs_float_~ix~0)) (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24))) (= main_~res~0 (let ((.cse0 (bvand (_ bv2147483647 32) fabs_float_~ix~0))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0)))))) (= main_~x~0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) [2018-11-18 17:46:28,144 INFO L425 ceAbstractionStarter]: For program point L39-1(lines 39 42) no Hoare annotation was computed. [2018-11-18 17:46:28,146 INFO L421 ceAbstractionStarter]: At program point L36(line 36) the Hoare annotation is: (= main_~x~0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24))) [2018-11-18 17:46:28,146 INFO L425 ceAbstractionStarter]: For program point L36-1(line 36) no Hoare annotation was computed. [2018-11-18 17:46:28,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 05:46:28 BoogieIcfgContainer [2018-11-18 17:46:28,153 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 17:46:28,154 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 17:46:28,154 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 17:46:28,154 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 17:46:28,154 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:46:27" (3/4) ... [2018-11-18 17:46:28,157 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 17:46:28,161 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2018-11-18 17:46:28,161 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 17:46:28,161 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure fabs_float [2018-11-18 17:46:28,162 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 17:46:28,165 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2018-11-18 17:46:28,165 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-18 17:46:28,165 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 17:46:28,185 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x == \old(x) [2018-11-18 17:46:28,197 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_8c4ecf3f-cb25-4235-a866-909d3916f774/bin-2019/utaipan/witness.graphml [2018-11-18 17:46:28,197 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 17:46:28,197 INFO L168 Benchmark]: Toolchain (without parser) took 1455.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 949.7 MB in the beginning and 1.0 GB in the end (delta: -63.3 MB). Peak memory consumption was 66.8 MB. Max. memory is 11.5 GB. [2018-11-18 17:46:28,198 INFO L168 Benchmark]: CDTParser took 0.16 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 17:46:28,198 INFO L168 Benchmark]: CACSL2BoogieTranslator took 167.52 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 933.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 17:46:28,199 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.45 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:46:28,199 INFO L168 Benchmark]: Boogie Preprocessor took 18.46 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:46:28,199 INFO L168 Benchmark]: RCFGBuilder took 231.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -168.9 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2018-11-18 17:46:28,199 INFO L168 Benchmark]: TraceAbstraction took 976.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 89.6 MB). Peak memory consumption was 89.6 MB. Max. memory is 11.5 GB. [2018-11-18 17:46:28,200 INFO L168 Benchmark]: Witness Printer took 43.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:46:28,201 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 167.52 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 933.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.45 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.46 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 231.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -168.9 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 976.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 89.6 MB). Peak memory consumption was 89.6 MB. Max. memory is 11.5 GB. * Witness Printer took 43.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 40]: 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) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 40 SDtfs, 7 SDslu, 107 SDs, 0 SdLazy, 54 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 10 PreInvPairs, 12 NumberOfFragments, 51 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 40 ConstructedInterpolants, 6 QuantifiedInterpolants, 5317 SizeOfPredicates, 6 NumberOfNonLiveVariables, 103 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...