./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/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 c9c4c4712c0b03f250e94d62f797a284bfa7b46f ..................................................................................................................................................................................................................................................................................... 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_abd6d11b-2d93-4afe-9040-39e25a5e8be0/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/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 c9c4c4712c0b03f250e94d62f797a284bfa7b46f .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 09:20:48,210 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 09:20:48,211 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 09:20:48,219 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 09:20:48,220 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 09:20:48,220 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 09:20:48,221 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 09:20:48,222 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 09:20:48,223 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 09:20:48,224 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 09:20:48,224 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 09:20:48,225 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 09:20:48,225 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 09:20:48,226 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 09:20:48,226 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 09:20:48,227 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 09:20:48,227 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 09:20:48,229 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 09:20:48,230 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 09:20:48,231 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 09:20:48,232 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 09:20:48,232 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 09:20:48,234 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 09:20:48,234 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 09:20:48,234 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 09:20:48,235 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 09:20:48,236 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 09:20:48,236 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 09:20:48,237 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 09:20:48,237 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 09:20:48,238 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 09:20:48,238 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 09:20:48,238 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 09:20:48,238 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 09:20:48,239 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 09:20:48,239 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 09:20:48,240 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-10 09:20:48,249 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 09:20:48,249 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 09:20:48,250 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 09:20:48,250 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 09:20:48,250 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 09:20:48,250 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 09:20:48,251 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 09:20:48,251 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 09:20:48,251 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 09:20:48,251 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 09:20:48,251 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 09:20:48,252 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 09:20:48,252 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 09:20:48,252 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 09:20:48,252 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 09:20:48,252 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 09:20:48,252 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 09:20:48,252 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 09:20:48,253 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 09:20:48,253 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 09:20:48,253 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 09:20:48,253 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 09:20:48,253 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 09:20:48,253 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 09:20:48,253 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 09:20:48,254 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 09:20:48,254 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 09:20:48,254 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 09:20:48,254 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 09:20:48,254 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 09:20:48,254 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 09:20:48,254 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 09:20:48,255 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 09:20:48,255 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 09:20:48,255 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_abd6d11b-2d93-4afe-9040-39e25a5e8be0/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 -> c9c4c4712c0b03f250e94d62f797a284bfa7b46f [2018-11-10 09:20:48,277 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 09:20:48,287 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 09:20:48,289 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 09:20:48,290 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 09:20:48,291 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 09:20:48,291 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/bin-2019/utaipan/../../sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i [2018-11-10 09:20:48,337 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/bin-2019/utaipan/data/a15ea53f4/81abbbe672bc4840968d0a007872effb/FLAGc6f594987 [2018-11-10 09:20:48,725 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 09:20:48,726 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i [2018-11-10 09:20:48,729 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/bin-2019/utaipan/data/a15ea53f4/81abbbe672bc4840968d0a007872effb/FLAGc6f594987 [2018-11-10 09:20:48,737 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/bin-2019/utaipan/data/a15ea53f4/81abbbe672bc4840968d0a007872effb [2018-11-10 09:20:48,739 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 09:20:48,740 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 09:20:48,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 09:20:48,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 09:20:48,744 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 09:20:48,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 09:20:48" (1/1) ... [2018-11-10 09:20:48,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3df45190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:48, skipping insertion in model container [2018-11-10 09:20:48,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 09:20:48" (1/1) ... [2018-11-10 09:20:48,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 09:20:48,763 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 09:20:48,854 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 09:20:48,858 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 09:20:48,869 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 09:20:48,877 INFO L193 MainTranslator]: Completed translation [2018-11-10 09:20:48,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:48 WrapperNode [2018-11-10 09:20:48,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 09:20:48,878 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 09:20:48,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 09:20:48,878 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 09:20:48,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:48" (1/1) ... [2018-11-10 09:20:48,890 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:48" (1/1) ... [2018-11-10 09:20:48,893 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 09:20:48,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 09:20:48,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 09:20:48,894 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 09:20:48,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:48" (1/1) ... [2018-11-10 09:20:48,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:48" (1/1) ... [2018-11-10 09:20:48,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:48" (1/1) ... [2018-11-10 09:20:48,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:48" (1/1) ... [2018-11-10 09:20:48,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:48" (1/1) ... [2018-11-10 09:20:48,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:48" (1/1) ... [2018-11-10 09:20:48,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:48" (1/1) ... [2018-11-10 09:20:48,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 09:20:48,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 09:20:48,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 09:20:48,905 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 09:20:48,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/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 [2018-11-10 09:20:48,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 09:20:48,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 09:20:48,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 09:20:48,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 09:20:48,980 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 09:20:48,980 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 09:20:48,980 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 09:20:48,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 09:20:49,087 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 09:20:49,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 09:20:49 BoogieIcfgContainer [2018-11-10 09:20:49,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 09:20:49,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 09:20:49,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 09:20:49,091 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 09:20:49,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 09:20:48" (1/3) ... [2018-11-10 09:20:49,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7563fb9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 09:20:49, skipping insertion in model container [2018-11-10 09:20:49,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:48" (2/3) ... [2018-11-10 09:20:49,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7563fb9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 09:20:49, skipping insertion in model container [2018-11-10 09:20:49,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 09:20:49" (3/3) ... [2018-11-10 09:20:49,094 INFO L112 eAbstractionObserver]: Analyzing ICFG Float_div_true-unreach-call.i [2018-11-10 09:20:49,100 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 09:20:49,105 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 09:20:49,117 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 09:20:49,138 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 09:20:49,138 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 09:20:49,138 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 09:20:49,138 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 09:20:49,138 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 09:20:49,139 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 09:20:49,139 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 09:20:49,139 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 09:20:49,150 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-10 09:20:49,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 09:20:49,155 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 09:20:49,155 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 09:20:49,157 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 09:20:49,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:20:49,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1871509567, now seen corresponding path program 1 times [2018-11-10 09:20:49,162 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 09:20:49,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:20:49,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:20:49,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:20:49,192 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 09:20:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:20:49,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:20:49,229 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 09:20:49,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 09:20:49,230 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 09:20:49,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 09:20:49,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 09:20:49,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 09:20:49,242 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-11-10 09:20:49,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 09:20:49,256 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2018-11-10 09:20:49,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 09:20:49,257 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-10 09:20:49,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 09:20:49,262 INFO L225 Difference]: With dead ends: 31 [2018-11-10 09:20:49,263 INFO L226 Difference]: Without dead ends: 12 [2018-11-10 09:20:49,265 INFO L605 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 [2018-11-10 09:20:49,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-10 09:20:49,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-10 09:20:49,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-10 09:20:49,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-10 09:20:49,288 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-11-10 09:20:49,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 09:20:49,288 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-10 09:20:49,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 09:20:49,289 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-10 09:20:49,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-10 09:20:49,289 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 09:20:49,289 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 09:20:49,289 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 09:20:49,290 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:20:49,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1861991801, now seen corresponding path program 1 times [2018-11-10 09:20:49,290 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 09:20:49,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:20:49,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:20:49,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:20:49,291 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 09:20:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:20:49,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:20:49,318 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 09:20:49,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 09:20:49 BoogieIcfgContainer [2018-11-10 09:20:49,332 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 09:20:49,332 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 09:20:49,332 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 09:20:49,332 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 09:20:49,333 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 09:20:49" (3/4) ... [2018-11-10 09:20:49,335 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 09:20:49,335 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 09:20:49,335 INFO L168 Benchmark]: Toolchain (without parser) took 596.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 954.4 MB in the beginning and 1.1 GB in the end (delta: -142.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 09:20:49,337 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 09:20:49,337 INFO L168 Benchmark]: CACSL2BoogieTranslator took 137.33 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 942.4 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-11-10 09:20:49,337 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.07 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 09:20:49,338 INFO L168 Benchmark]: Boogie Preprocessor took 11.67 ms. Allocated memory is still 1.0 GB. Free memory was 942.4 MB in the beginning and 939.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 09:20:49,338 INFO L168 Benchmark]: RCFGBuilder took 182.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 939.7 MB in the beginning and 1.1 GB in the end (delta: -178.5 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2018-11-10 09:20:49,339 INFO L168 Benchmark]: TraceAbstraction took 243.41 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: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2018-11-10 09:20:49,339 INFO L168 Benchmark]: Witness Printer took 2.87 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. [2018-11-10 09:20:49,341 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 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 137.33 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 942.4 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.07 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.67 ms. Allocated memory is still 1.0 GB. Free memory was 942.4 MB in the beginning and 939.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 182.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 939.7 MB in the beginning and 1.1 GB in the end (delta: -178.5 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 243.41 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: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Witness Printer took 2.87 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: 2]: 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 10. Possible FailurePath: [L9] float x = 1.0f; [L10] float x1 = x/2.5f; VAL [x=1] [L12] COND FALSE !(x1 != x) VAL [x=1] [L18] CALL __VERIFIER_assert(x == 0) VAL [\old(cond)=0] [L2] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L2] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 19 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=19occurred 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, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 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 0.1.23-1dbac8b [2018-11-10 09:20:50,754 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 09:20:50,755 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 09:20:50,764 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 09:20:50,764 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 09:20:50,765 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 09:20:50,766 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 09:20:50,767 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 09:20:50,768 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 09:20:50,768 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 09:20:50,769 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 09:20:50,769 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 09:20:50,770 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 09:20:50,771 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 09:20:50,771 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 09:20:50,772 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 09:20:50,772 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 09:20:50,774 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 09:20:50,775 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 09:20:50,776 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 09:20:50,777 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 09:20:50,778 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 09:20:50,779 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 09:20:50,780 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 09:20:50,780 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 09:20:50,780 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 09:20:50,781 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 09:20:50,782 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 09:20:50,782 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 09:20:50,783 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 09:20:50,783 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 09:20:50,783 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 09:20:50,784 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 09:20:50,784 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 09:20:50,784 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 09:20:50,785 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 09:20:50,786 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-10 09:20:50,796 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 09:20:50,796 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 09:20:50,796 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 09:20:50,797 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 09:20:50,797 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 09:20:50,797 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 09:20:50,798 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 09:20:50,798 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 09:20:50,798 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 09:20:50,798 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 09:20:50,798 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 09:20:50,799 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 09:20:50,799 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 09:20:50,799 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 09:20:50,799 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 09:20:50,799 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-10 09:20:50,799 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-10 09:20:50,799 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 09:20:50,799 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 09:20:50,800 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 09:20:50,800 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 09:20:50,800 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 09:20:50,800 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 09:20:50,800 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 09:20:50,800 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 09:20:50,800 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 09:20:50,801 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 09:20:50,801 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 09:20:50,801 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-10 09:20:50,801 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 09:20:50,803 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-10 09:20:50,803 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-10 09:20:50,803 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_abd6d11b-2d93-4afe-9040-39e25a5e8be0/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 -> c9c4c4712c0b03f250e94d62f797a284bfa7b46f [2018-11-10 09:20:50,833 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 09:20:50,842 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 09:20:50,845 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 09:20:50,846 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 09:20:50,846 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 09:20:50,847 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/bin-2019/utaipan/../../sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i [2018-11-10 09:20:50,892 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/bin-2019/utaipan/data/91ed399fb/013b978d1ddd4a0593fd9c968eba13d4/FLAG2770f2c8a [2018-11-10 09:20:51,208 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 09:20:51,209 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i [2018-11-10 09:20:51,212 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/bin-2019/utaipan/data/91ed399fb/013b978d1ddd4a0593fd9c968eba13d4/FLAG2770f2c8a [2018-11-10 09:20:51,221 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/bin-2019/utaipan/data/91ed399fb/013b978d1ddd4a0593fd9c968eba13d4 [2018-11-10 09:20:51,224 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 09:20:51,225 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 09:20:51,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 09:20:51,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 09:20:51,227 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 09:20:51,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 09:20:51" (1/1) ... [2018-11-10 09:20:51,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61b1e68f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:51, skipping insertion in model container [2018-11-10 09:20:51,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 09:20:51" (1/1) ... [2018-11-10 09:20:51,236 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 09:20:51,250 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 09:20:51,362 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 09:20:51,366 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 09:20:51,375 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 09:20:51,383 INFO L193 MainTranslator]: Completed translation [2018-11-10 09:20:51,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:51 WrapperNode [2018-11-10 09:20:51,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 09:20:51,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 09:20:51,385 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 09:20:51,385 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 09:20:51,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:51" (1/1) ... [2018-11-10 09:20:51,394 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:51" (1/1) ... [2018-11-10 09:20:51,397 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 09:20:51,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 09:20:51,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 09:20:51,398 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 09:20:51,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:51" (1/1) ... [2018-11-10 09:20:51,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:51" (1/1) ... [2018-11-10 09:20:51,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:51" (1/1) ... [2018-11-10 09:20:51,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:51" (1/1) ... [2018-11-10 09:20:51,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:51" (1/1) ... [2018-11-10 09:20:51,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:51" (1/1) ... [2018-11-10 09:20:51,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:51" (1/1) ... [2018-11-10 09:20:51,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 09:20:51,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 09:20:51,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 09:20:51,414 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 09:20:51,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/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 [2018-11-10 09:20:51,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 09:20:51,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 09:20:51,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 09:20:51,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 09:20:51,456 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 09:20:51,456 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 09:20:51,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 09:20:51,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 09:20:51,835 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 09:20:51,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 09:20:51 BoogieIcfgContainer [2018-11-10 09:20:51,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 09:20:51,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 09:20:51,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 09:20:51,838 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 09:20:51,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 09:20:51" (1/3) ... [2018-11-10 09:20:51,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27dc9525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 09:20:51, skipping insertion in model container [2018-11-10 09:20:51,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:51" (2/3) ... [2018-11-10 09:20:51,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27dc9525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 09:20:51, skipping insertion in model container [2018-11-10 09:20:51,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 09:20:51" (3/3) ... [2018-11-10 09:20:51,841 INFO L112 eAbstractionObserver]: Analyzing ICFG Float_div_true-unreach-call.i [2018-11-10 09:20:51,847 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 09:20:51,852 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 09:20:51,860 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 09:20:51,879 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 09:20:51,879 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 09:20:51,879 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 09:20:51,879 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 09:20:51,880 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 09:20:51,880 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 09:20:51,880 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 09:20:51,880 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 09:20:51,880 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 09:20:51,890 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-10 09:20:51,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 09:20:51,893 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 09:20:51,893 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 09:20:51,895 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 09:20:51,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:20:51,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1871509567, now seen corresponding path program 1 times [2018-11-10 09:20:51,900 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 09:20:51,901 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/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 [2018-11-10 09:20:51,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:20:51,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:20:51,965 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:20:51,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:20:51,978 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 09:20:51,988 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 09:20:51,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 09:20:51,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 09:20:51,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 09:20:51,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 09:20:52,001 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-11-10 09:20:52,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 09:20:52,019 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2018-11-10 09:20:52,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 09:20:52,020 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-10 09:20:52,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 09:20:52,025 INFO L225 Difference]: With dead ends: 31 [2018-11-10 09:20:52,025 INFO L226 Difference]: Without dead ends: 12 [2018-11-10 09:20:52,027 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 09:20:52,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-10 09:20:52,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-10 09:20:52,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-10 09:20:52,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-10 09:20:52,049 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-11-10 09:20:52,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 09:20:52,049 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-10 09:20:52,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 09:20:52,049 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-10 09:20:52,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-10 09:20:52,050 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 09:20:52,050 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 09:20:52,050 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 09:20:52,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:20:52,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1861991801, now seen corresponding path program 1 times [2018-11-10 09:20:52,051 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 09:20:52,051 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/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 [2018-11-10 09:20:52,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:20:52,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:20:52,111 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:20:52,267 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-11-10 09:20:52,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:20:52,274 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 09:20:52,281 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 09:20:52,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 09:20:52,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 09:20:52,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 09:20:52,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 09:20:52,283 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2018-11-10 09:20:52,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 09:20:52,556 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-11-10 09:20:52,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 09:20:52,625 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-10 09:20:52,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 09:20:52,626 INFO L225 Difference]: With dead ends: 19 [2018-11-10 09:20:52,626 INFO L226 Difference]: Without dead ends: 14 [2018-11-10 09:20:52,627 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 09:20:52,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-10 09:20:52,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-10 09:20:52,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-10 09:20:52,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-11-10 09:20:52,630 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-11-10 09:20:52,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 09:20:52,630 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-11-10 09:20:52,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 09:20:52,630 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-10 09:20:52,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-10 09:20:52,631 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 09:20:52,631 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 09:20:52,631 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 09:20:52,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:20:52,631 INFO L82 PathProgramCache]: Analyzing trace with hash -661808769, now seen corresponding path program 1 times [2018-11-10 09:20:52,631 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 09:20:52,632 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/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 [2018-11-10 09:20:52,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:20:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:20:52,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:20:53,128 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-10 09:20:53,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:20:53,132 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 09:20:54,705 WARN L179 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-11-10 09:20:54,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:20:54,719 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 09:20:54,719 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 09:20:54,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:20:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:20:55,403 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:20:55,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:20:55,408 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 09:21:08,115 WARN L179 SmtUtils]: Spent 4.39 s on a formula simplification that was a NOOP. DAG size: 11 [2018-11-10 09:21:08,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:21:08,160 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-10 09:21:08,160 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 7] total 11 [2018-11-10 09:21:08,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-10 09:21:08,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-10 09:21:08,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=81, Unknown=1, NotChecked=0, Total=110 [2018-11-10 09:21:08,161 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 11 states. [2018-11-10 09:21:15,713 WARN L179 SmtUtils]: Spent 3.33 s on a formula simplification that was a NOOP. DAG size: 11 [2018-11-10 09:21:28,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 09:21:28,986 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2018-11-10 09:21:28,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 09:21:28,987 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2018-11-10 09:21:28,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 09:21:28,987 INFO L225 Difference]: With dead ends: 25 [2018-11-10 09:21:28,987 INFO L226 Difference]: Without dead ends: 20 [2018-11-10 09:21:28,988 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=43, Invalid=112, Unknown=1, NotChecked=0, Total=156 [2018-11-10 09:21:28,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-10 09:21:28,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-11-10 09:21:28,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-10 09:21:28,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-11-10 09:21:28,992 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 13 [2018-11-10 09:21:28,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 09:21:28,992 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-11-10 09:21:28,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-10 09:21:28,992 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-11-10 09:21:28,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-10 09:21:28,993 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 09:21:28,993 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 09:21:28,993 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 09:21:28,993 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:21:28,994 INFO L82 PathProgramCache]: Analyzing trace with hash -875350895, now seen corresponding path program 2 times [2018-11-10 09:21:28,994 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 09:21:28,994 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/bin-2019/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-11-10 09:21:28,997 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-10 09:21:29,181 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 09:21:29,181 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 09:21:29,194 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:21:30,124 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-10 09:21:30,127 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:21:30,127 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 09:21:39,412 WARN L179 SmtUtils]: Spent 4.65 s on a formula simplification that was a NOOP. DAG size: 11 [2018-11-10 09:22:06,852 WARN L179 SmtUtils]: Spent 4.75 s on a formula simplification that was a NOOP. DAG size: 12 [2018-11-10 09:22:08,921 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE (fp.div RNE c_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) RNE (_ bv0 32)))))) is different from false [2018-11-10 09:22:10,990 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE (fp.div RNE c_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) RNE (_ bv0 32)))))) is different from true [2018-11-10 09:22:13,082 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE (fp.div RNE (fp.div RNE c_main_~x1~0 .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) RNE (_ bv0 32))) (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0))))) is different from false [2018-11-10 09:22:15,170 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE (fp.div RNE (fp.div RNE c_main_~x1~0 .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) RNE (_ bv0 32))) (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0))))) is different from true [2018-11-10 09:22:15,178 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 4 times theorem prover too weak. 0 trivial. 14 not checked. [2018-11-10 09:22:15,189 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 09:22:15,189 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 09:22:15,195 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 09:22:22,681 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 09:22:22,681 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 09:22:22,764 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:22:24,820 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-10 09:22:27,009 WARN L179 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2018-11-10 09:22:28,147 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:22:28,147 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 09:22:42,231 WARN L179 SmtUtils]: Spent 3.77 s on a formula simplification that was a NOOP. DAG size: 13 [2018-11-10 09:22:44,280 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE c_main_~x1~0 .cse1))) (or (fp.eq c_main_~x1~0 c_main_~x~0) (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0)) (fp.eq .cse0 c_main_~x1~0) (fp.eq .cse0 ((_ to_fp 8 24) RNE (_ bv0 32)))))) is different from false [2018-11-10 09:22:46,326 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE c_main_~x1~0 .cse1))) (or (fp.eq c_main_~x1~0 c_main_~x~0) (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0)) (fp.eq .cse0 c_main_~x1~0) (fp.eq .cse0 ((_ to_fp 8 24) RNE (_ bv0 32)))))) is different from true [2018-11-10 09:22:48,934 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) RNE (/ 5.0 2.0)))) (let ((.cse1 (fp.div RNE c_main_~x1~0 .cse2))) (let ((.cse0 (fp.div RNE .cse1 .cse2))) (or (fp.eq .cse0 .cse1) (not (fp.eq (fp.div RNE .cse0 .cse2) .cse0)) (fp.eq .cse1 c_main_~x1~0) (fp.eq .cse0 ((_ to_fp 8 24) RNE (_ bv0 32))))))) is different from true [2018-11-10 09:22:51,028 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 8 24) RNE (/ 5.0 2.0)))) (let ((.cse1 (fp.div RNE c_main_~x1~0 .cse3))) (let ((.cse0 (fp.div RNE .cse1 .cse3))) (let ((.cse2 (fp.div RNE .cse0 .cse3))) (or (fp.eq .cse0 .cse1) (fp.eq .cse2 ((_ to_fp 8 24) RNE (_ bv0 32))) (fp.eq .cse2 .cse0) (not (fp.eq (fp.div RNE .cse2 .cse3) .cse2))))))) is different from false [2018-11-10 09:22:53,118 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 8 24) RNE (/ 5.0 2.0)))) (let ((.cse1 (fp.div RNE c_main_~x1~0 .cse3))) (let ((.cse0 (fp.div RNE .cse1 .cse3))) (let ((.cse2 (fp.div RNE .cse0 .cse3))) (or (fp.eq .cse0 .cse1) (fp.eq .cse2 ((_ to_fp 8 24) RNE (_ bv0 32))) (fp.eq .cse2 .cse0) (not (fp.eq (fp.div RNE .cse2 .cse3) .cse2))))))) is different from true [2018-11-10 09:22:53,125 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 18 not checked. [2018-11-10 09:22:53,167 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-10 09:22:53,167 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 7, 10] total 21 [2018-11-10 09:22:53,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-10 09:22:53,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-10 09:22:53,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=176, Unknown=15, NotChecked=160, Total=420 [2018-11-10 09:22:53,168 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 21 states. [2018-11-10 09:22:55,270 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) RNE (/ 5.0 2.0)))) (let ((.cse3 (fp.div RNE c_main_~x1~0 .cse0))) (let ((.cse2 (fp.div RNE .cse3 .cse0))) (let ((.cse5 (fp.div RNE .cse2 .cse0)) (.cse1 ((_ to_fp 8 24) RNE (_ bv0 32)))) (let ((.cse4 (fp.eq .cse5 .cse1)) (.cse6 (not (fp.eq (fp.div RNE .cse5 .cse0) .cse5)))) (and (= c_main_~x1~0 (fp.div RNE ((_ to_fp 8 24) RNE 1.0) .cse0)) (or (fp.eq c_main_~x~0 .cse1) (not (fp.eq c_main_~x1~0 c_main_~x~0))) (or (fp.eq .cse2 .cse3) .cse4 (fp.eq .cse5 .cse2) .cse6) (or .cse4 .cse6))))))) is different from true [2018-11-10 09:22:57,344 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 8 24) RNE (/ 5.0 2.0)))) (let ((.cse4 (fp.div RNE c_main_~x1~0 .cse5))) (let ((.cse0 ((_ to_fp 8 24) RNE (_ bv0 32))) (.cse3 (fp.div RNE .cse4 .cse5))) (let ((.cse1 (not (fp.eq (fp.div RNE .cse3 .cse5) .cse3))) (.cse2 (fp.eq .cse3 .cse0))) (and (or (fp.eq c_main_~x~0 .cse0) (not (fp.eq c_main_~x1~0 c_main_~x~0))) (or .cse1 .cse2) (or (fp.eq .cse3 .cse4) .cse1 (fp.eq .cse4 c_main_~x1~0) .cse2) (= c_main_~x1~0 (fp.div RNE (fp.div RNE ((_ to_fp 8 24) RNE 1.0) .cse5) .cse5))))))) is different from true [2018-11-10 09:23:02,084 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) RNE (/ 5.0 2.0)))) (and (= c_main_~x~0 (fp.div RNE (fp.div RNE ((_ to_fp 8 24) RNE 1.0) .cse0) .cse0)) (= c_main_~x1~0 (fp.div RNE c_main_~x~0 .cse0)) (let ((.cse1 (fp.div RNE c_main_~x1~0 .cse0))) (or (fp.eq c_main_~x1~0 c_main_~x~0) (not (fp.eq (fp.div RNE .cse1 .cse0) .cse1)) (fp.eq .cse1 c_main_~x1~0) (fp.eq .cse1 ((_ to_fp 8 24) RNE (_ bv0 32))))))) is different from true [2018-11-10 09:23:14,192 WARN L179 SmtUtils]: Spent 3.14 s on a formula simplification that was a NOOP. DAG size: 17 [2018-11-10 09:23:40,785 WARN L179 SmtUtils]: Spent 12.72 s on a formula simplification that was a NOOP. DAG size: 15 [2018-11-10 09:23:59,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 09:23:59,735 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2018-11-10 09:23:59,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-10 09:23:59,735 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 19 [2018-11-10 09:23:59,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 09:23:59,736 INFO L225 Difference]: With dead ends: 34 [2018-11-10 09:23:59,736 INFO L226 Difference]: Without dead ends: 26 [2018-11-10 09:23:59,737 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 121.4s TimeCoverageRelationStatistics Valid=95, Invalid=258, Unknown=21, NotChecked=328, Total=702 [2018-11-10 09:23:59,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-10 09:23:59,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-11-10 09:23:59,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-10 09:23:59,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-11-10 09:23:59,741 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 19 [2018-11-10 09:23:59,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 09:23:59,741 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-11-10 09:23:59,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-10 09:23:59,741 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-11-10 09:23:59,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-10 09:23:59,742 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 09:23:59,742 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 09:23:59,742 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 09:23:59,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:23:59,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1788298717, now seen corresponding path program 3 times [2018-11-10 09:23:59,742 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 09:23:59,743 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/bin-2019/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-11-10 09:23:59,745 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-10 09:23:59,921 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-10 09:23:59,922 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 09:23:59,932 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:24:00,447 WARN L179 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-11-10 09:24:10,583 WARN L179 SmtUtils]: Spent 6.27 s on a formula simplification that was a NOOP. DAG size: 15 [2018-11-10 09:24:12,631 WARN L832 $PredicateComparison]: unable to prove that (and (exists ((v_main_~x~0_23 (_ FloatingPoint 8 24))) (let ((.cse0 (fp.div RNE v_main_~x~0_23 ((_ to_fp 8 24) RNE (/ 5.0 2.0))))) (and (= .cse0 c_main_~x~0) (not (fp.eq .cse0 v_main_~x~0_23))))) (fp.eq (fp.div RNE c_main_~x~0 ((_ to_fp 8 24) RNE (/ 5.0 2.0))) c_main_~x~0)) is different from false [2018-11-10 09:24:23,187 WARN L832 $PredicateComparison]: unable to prove that (or (and (= (bvadd |c___VERIFIER_assert_#in~cond| (_ bv4294967295 32)) (_ bv0 32)) (exists ((v_prenex_2 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE v_prenex_2 .cse1))) (and (fp.eq (fp.div RNE .cse0 .cse1) .cse0) (not (fp.eq .cse0 v_prenex_2)) (fp.eq .cse0 ((_ to_fp 8 24) RNE (_ bv0 32)))))))) (and (exists ((v_main_~x~0_23 (_ FloatingPoint 8 24))) (let ((.cse3 ((_ to_fp 8 24) RNE (/ 5.0 2.0)))) (let ((.cse2 (fp.div RNE v_main_~x~0_23 .cse3))) (and (fp.eq (fp.div RNE .cse2 .cse3) .cse2) (not (fp.eq .cse2 ((_ to_fp 8 24) RNE (_ bv0 32)))) (not (fp.eq .cse2 v_main_~x~0_23)))))) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) is different from false [2018-11-10 09:24:47,871 WARN L179 SmtUtils]: Spent 12.07 s on a formula simplification that was a NOOP. DAG size: 22 [2018-11-10 09:24:54,015 WARN L832 $PredicateComparison]: unable to prove that (exists ((v_main_~x~0_23 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE v_main_~x~0_23 .cse1))) (and (fp.eq (fp.div RNE .cse0 .cse1) .cse0) (not (fp.eq .cse0 ((_ to_fp 8 24) RNE (_ bv0 32)))) (not (fp.eq .cse0 v_main_~x~0_23)))))) is different from false [2018-11-10 09:24:56,057 WARN L854 $PredicateComparison]: unable to prove that (exists ((v_main_~x~0_23 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE v_main_~x~0_23 .cse1))) (and (fp.eq (fp.div RNE .cse0 .cse1) .cse0) (not (fp.eq .cse0 ((_ to_fp 8 24) RNE (_ bv0 32)))) (not (fp.eq .cse0 v_main_~x~0_23)))))) is different from true [2018-11-10 09:24:56,059 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-11-10 09:24:56,059 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 09:24:56,068 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 09:24:56,068 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-10 09:24:56,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-10 09:24:56,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-10 09:24:56,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=11, Unknown=7, NotChecked=24, Total=56 [2018-11-10 09:24:56,069 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 8 states. [2018-11-10 09:25:03,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 09:25:03,539 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-11-10 09:25:03,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 09:25:03,587 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-11-10 09:25:03,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 09:25:03,588 INFO L225 Difference]: With dead ends: 26 [2018-11-10 09:25:03,588 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 09:25:03,588 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.9s TimeCoverageRelationStatistics Valid=14, Invalid=11, Unknown=7, NotChecked=24, Total=56 [2018-11-10 09:25:03,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 09:25:03,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 09:25:03,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 09:25:03,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 09:25:03,589 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-11-10 09:25:03,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 09:25:03,589 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 09:25:03,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-10 09:25:03,589 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 09:25:03,590 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 09:25:03,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 09:25:54,853 WARN L179 SmtUtils]: Spent 51.20 s on a formula simplification that was a NOOP. DAG size: 31 [2018-11-10 09:25:55,120 WARN L179 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 1 [2018-11-10 09:26:01,091 WARN L179 SmtUtils]: Spent 5.97 s on a formula simplification that was a NOOP. DAG size: 15 [2018-11-10 09:26:01,093 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 09:26:01,093 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 09:26:01,093 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 09:26:01,093 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 09:26:01,093 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 09:26:01,093 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 09:26:01,093 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 7 20) the Hoare annotation is: true [2018-11-10 09:26:01,093 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 7 20) no Hoare annotation was computed. [2018-11-10 09:26:01,093 INFO L425 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-11-10 09:26:01,093 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 7 20) no Hoare annotation was computed. [2018-11-10 09:26:01,093 INFO L425 ceAbstractionStarter]: For program point L12-1(lines 12 16) no Hoare annotation was computed. [2018-11-10 09:26:01,094 INFO L421 ceAbstractionStarter]: At program point L12-3(lines 12 16) the Hoare annotation is: (and (exists ((v_main_~x~0_23 (_ FloatingPoint 8 24))) (let ((.cse0 (fp.div RNE v_main_~x~0_23 ((_ to_fp 8 24) RNE (/ 5.0 2.0))))) (and (= .cse0 main_~x~0) (not (fp.eq .cse0 v_main_~x~0_23))))) (= main_~x1~0 (fp.div RNE main_~x~0 ((_ to_fp 8 24) RNE (/ 5.0 2.0))))) [2018-11-10 09:26:01,094 INFO L421 ceAbstractionStarter]: At program point L12-4(lines 12 16) the Hoare annotation is: (let ((.cse3 ((_ to_fp 8 24) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE main_~x1~0 .cse3)) (.cse1 ((_ to_fp 8 24) RNE (_ bv0 32)))) (or (and (or (fp.eq main_~x1~0 main_~x~0) (not (fp.eq .cse0 main_~x1~0)) (fp.eq main_~x1~0 .cse1)) (exists ((v_main_~x~0_23 (_ FloatingPoint 8 24))) (let ((.cse2 (fp.div RNE v_main_~x~0_23 ((_ to_fp 8 24) RNE (/ 5.0 2.0))))) (and (= .cse2 main_~x~0) (not (fp.eq .cse2 v_main_~x~0_23))))) (fp.eq (fp.div RNE main_~x~0 .cse3) main_~x~0)) (and (or (not (fp.eq (fp.div RNE .cse0 .cse3) .cse0)) (fp.eq .cse0 .cse1)) (fp.eq main_~x~0 .cse1))))) [2018-11-10 09:26:01,094 INFO L425 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2018-11-10 09:26:01,094 INFO L425 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2018-11-10 09:26:01,094 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2018-11-10 09:26:01,094 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2018-11-10 09:26:01,094 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2018-11-10 09:26:01,094 INFO L425 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2018-11-10 09:26:01,099 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-11-10 09:26:01,099 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2018-11-10 09:26:01,100 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-11-10 09:26:01,100 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-11-10 09:26:01,100 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2018-11-10 09:26:01,100 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-11-10 09:26:01,100 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2018-11-10 09:26:01,100 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-11-10 09:26:01,100 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-11-10 09:26:01,103 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-11-10 09:26:01,103 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2018-11-10 09:26:01,103 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-11-10 09:26:01,103 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-11-10 09:26:01,103 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2018-11-10 09:26:01,103 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-11-10 09:26:01,103 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2018-11-10 09:26:01,104 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-11-10 09:26:01,104 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-11-10 09:26:01,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 09:26:01 BoogieIcfgContainer [2018-11-10 09:26:01,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 09:26:01,105 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 09:26:01,105 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 09:26:01,106 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 09:26:01,106 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 09:20:51" (3/4) ... [2018-11-10 09:26:01,108 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 09:26:01,112 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 09:26:01,113 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 09:26:01,113 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-10 09:26:01,115 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-10 09:26:01,115 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-10 09:26:01,115 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 09:26:01,132 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists v_main_~x~0_23 : C_FLOAT :: ~fp.div~FLOAT(RoundingMode_RNE, v_main_~x~0_23, ~to_fp~LONGDOUBLE(RoundingMode_RNE, 5/2)) == x && !~fp.eq~FLOAT(~fp.div~FLOAT(RoundingMode_RNE, v_main_~x~0_23, ~to_fp~LONGDOUBLE(RoundingMode_RNE, 5/2)), v_main_~x~0_23)) && x1 == ~fp.div~FLOAT(RoundingMode_RNE, x, ~to_fp~LONGDOUBLE(RoundingMode_RNE, 5/2)) [2018-11-10 09:26:01,139 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_abd6d11b-2d93-4afe-9040-39e25a5e8be0/bin-2019/utaipan/witness.graphml [2018-11-10 09:26:01,139 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 09:26:01,140 INFO L168 Benchmark]: Toolchain (without parser) took 309915.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 949.7 MB in the beginning and 924.9 MB in the end (delta: 24.8 MB). Peak memory consumption was 164.3 MB. Max. memory is 11.5 GB. [2018-11-10 09:26:01,140 INFO L168 Benchmark]: CDTParser took 0.17 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. [2018-11-10 09:26:01,141 INFO L168 Benchmark]: CACSL2BoogieTranslator took 158.99 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 09:26:01,141 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.83 ms. Allocated memory is still 1.0 GB. Free memory is still 939.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 09:26:01,141 INFO L168 Benchmark]: Boogie Preprocessor took 16.26 ms. Allocated memory is still 1.0 GB. Free memory was 939.0 MB in the beginning and 933.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-10 09:26:01,142 INFO L168 Benchmark]: RCFGBuilder took 421.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -191.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. [2018-11-10 09:26:01,142 INFO L168 Benchmark]: TraceAbstraction took 309268.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 931.6 MB in the end (delta: 193.7 MB). Peak memory consumption was 193.7 MB. Max. memory is 11.5 GB. [2018-11-10 09:26:01,143 INFO L168 Benchmark]: Witness Printer took 34.10 ms. Allocated memory is still 1.2 GB. Free memory was 931.6 MB in the beginning and 924.9 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-11-10 09:26:01,145 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 158.99 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.83 ms. Allocated memory is still 1.0 GB. Free memory is still 939.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.26 ms. Allocated memory is still 1.0 GB. Free memory was 939.0 MB in the beginning and 933.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 421.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -191.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 309268.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 931.6 MB in the end (delta: 193.7 MB). Peak memory consumption was 193.7 MB. Max. memory is 11.5 GB. * Witness Printer took 34.10 ms. Allocated memory is still 1.2 GB. Free memory was 931.6 MB in the beginning and 924.9 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: 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: 12]: Loop Invariant [2018-11-10 09:26:01,150 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-11-10 09:26:01,150 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2018-11-10 09:26:01,150 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-11-10 09:26:01,150 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-11-10 09:26:01,150 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2018-11-10 09:26:01,150 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-11-10 09:26:01,151 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2018-11-10 09:26:01,151 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-11-10 09:26:01,151 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-11-10 09:26:01,151 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-11-10 09:26:01,151 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2018-11-10 09:26:01,152 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-11-10 09:26:01,152 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-11-10 09:26:01,152 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2018-11-10 09:26:01,152 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-11-10 09:26:01,152 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2018-11-10 09:26:01,152 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-11-10 09:26:01,153 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE Derived loop invariant: (\exists v_main_~x~0_23 : C_FLOAT :: ~fp.div~FLOAT(RoundingMode_RNE, v_main_~x~0_23, ~to_fp~LONGDOUBLE(RoundingMode_RNE, 5/2)) == x && !~fp.eq~FLOAT(~fp.div~FLOAT(RoundingMode_RNE, v_main_~x~0_23, ~to_fp~LONGDOUBLE(RoundingMode_RNE, 5/2)), v_main_~x~0_23)) && x1 == ~fp.div~FLOAT(RoundingMode_RNE, x, ~to_fp~LONGDOUBLE(RoundingMode_RNE, 5/2)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 309.2s OverallTime, 5 OverallIterations, 8 TraceHistogramMax, 95.2s AutomataDifference, 0.0s DeadEndRemovalTime, 57.5s HoareAnnotationTime, HoareTripleCheckerStatistics: 61 SDtfs, 4 SDslu, 171 SDs, 0 SdLazy, 78 SolverSat, 13 SolverUnsat, 14 SolverUnknown, 0 SolverNotchecked, 42.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 122 SyntacticMatches, 11 SemanticMatches, 43 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 180.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 12 PreInvPairs, 21 NumberOfFragments, 116 HoareAnnotationTreeSize, 12 FomulaSimplifications, 655 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 181 FormulaSimplificationTreeSizeReductionInter, 57.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 8.6s SatisfiabilityAnalysisTime, 147.5s InterpolantComputationTime, 110 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 163 ConstructedInterpolants, 6 QuantifiedInterpolants, 33681 SizeOfPredicates, 18 NumberOfNonLiveVariables, 191 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 56/144 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...