./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_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/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_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/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_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/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_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/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 [2018-10-26 20:06:42,696 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 20:06:42,701 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 20:06:42,718 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 20:06:42,718 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 20:06:42,719 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 20:06:42,720 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 20:06:42,723 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 20:06:42,725 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 20:06:42,726 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 20:06:42,727 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 20:06:42,727 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 20:06:42,728 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 20:06:42,729 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 20:06:42,730 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 20:06:42,731 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 20:06:42,732 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 20:06:42,734 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 20:06:42,736 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 20:06:42,738 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 20:06:42,739 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 20:06:42,740 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 20:06:42,742 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 20:06:42,743 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 20:06:42,743 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 20:06:42,744 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 20:06:42,745 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 20:06:42,746 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 20:06:42,747 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 20:06:42,748 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 20:06:42,748 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 20:06:42,749 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 20:06:42,749 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 20:06:42,750 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 20:06:42,751 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 20:06:42,751 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 20:06:42,752 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-26 20:06:42,765 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 20:06:42,765 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 20:06:42,766 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 20:06:42,766 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 20:06:42,766 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 20:06:42,766 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 20:06:42,766 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 20:06:42,767 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 20:06:42,767 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 20:06:42,767 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 20:06:42,767 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 20:06:42,768 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 20:06:42,768 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 20:06:42,768 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 20:06:42,768 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 20:06:42,769 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 20:06:42,770 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 20:06:42,771 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 20:06:42,771 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 20:06:42,771 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 20:06:42,771 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 20:06:42,771 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 20:06:42,771 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 20:06:42,772 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 20:06:42,772 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 20:06:42,772 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 20:06:42,772 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 20:06:42,772 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 20:06:42,772 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 20:06:42,773 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 20:06:42,773 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 20:06:42,773 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 20:06:42,773 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 20:06:42,773 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 20:06:42,773 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_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/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 [2018-10-26 20:06:42,810 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 20:06:42,823 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 20:06:42,829 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 20:06:42,831 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 20:06:42,831 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 20:06:42,832 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/bin-2019/utaipan/../../sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i [2018-10-26 20:06:42,887 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/bin-2019/utaipan/data/298a8fb81/1ebb05c945de42609e099ff1012ec8f7/FLAG7b510c624 [2018-10-26 20:06:43,278 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 20:06:43,278 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i [2018-10-26 20:06:43,288 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/bin-2019/utaipan/data/298a8fb81/1ebb05c945de42609e099ff1012ec8f7/FLAG7b510c624 [2018-10-26 20:06:43,300 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/bin-2019/utaipan/data/298a8fb81/1ebb05c945de42609e099ff1012ec8f7 [2018-10-26 20:06:43,303 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 20:06:43,304 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 20:06:43,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 20:06:43,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 20:06:43,309 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 20:06:43,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:06:43" (1/1) ... [2018-10-26 20:06:43,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d3d4c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:06:43, skipping insertion in model container [2018-10-26 20:06:43,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:06:43" (1/1) ... [2018-10-26 20:06:43,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 20:06:43,341 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 20:06:43,488 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:06:43,493 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 20:06:43,505 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:06:43,516 INFO L193 MainTranslator]: Completed translation [2018-10-26 20:06:43,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:06:43 WrapperNode [2018-10-26 20:06:43,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 20:06:43,517 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 20:06:43,518 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 20:06:43,518 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 20:06:43,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:06:43" (1/1) ... [2018-10-26 20:06:43,534 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:06:43" (1/1) ... [2018-10-26 20:06:43,540 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 20:06:43,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 20:06:43,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 20:06:43,540 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 20:06:43,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:06:43" (1/1) ... [2018-10-26 20:06:43,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:06:43" (1/1) ... [2018-10-26 20:06:43,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:06:43" (1/1) ... [2018-10-26 20:06:43,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:06:43" (1/1) ... [2018-10-26 20:06:43,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:06:43" (1/1) ... [2018-10-26 20:06:43,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:06:43" (1/1) ... [2018-10-26 20:06:43,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:06:43" (1/1) ... [2018-10-26 20:06:43,562 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 20:06:43,563 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 20:06:43,563 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 20:06:43,563 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 20:06:43,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:06:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/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 [2018-10-26 20:06:43,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 20:06:43,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 20:06:43,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 20:06:43,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 20:06:43,697 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 20:06:43,697 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 20:06:43,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 20:06:43,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 20:06:44,026 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 20:06:44,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:06:44 BoogieIcfgContainer [2018-10-26 20:06:44,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 20:06:44,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 20:06:44,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 20:06:44,033 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 20:06:44,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:06:43" (1/3) ... [2018-10-26 20:06:44,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d805bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:06:44, skipping insertion in model container [2018-10-26 20:06:44,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:06:43" (2/3) ... [2018-10-26 20:06:44,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d805bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:06:44, skipping insertion in model container [2018-10-26 20:06:44,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:06:44" (3/3) ... [2018-10-26 20:06:44,038 INFO L112 eAbstractionObserver]: Analyzing ICFG Float_div_true-unreach-call.i [2018-10-26 20:06:44,050 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 20:06:44,058 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 20:06:44,076 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 20:06:44,111 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 20:06:44,111 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 20:06:44,111 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 20:06:44,111 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 20:06:44,111 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 20:06:44,112 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 20:06:44,112 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 20:06:44,112 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 20:06:44,132 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-10-26 20:06:44,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-26 20:06:44,138 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:06:44,139 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:06:44,142 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:06:44,148 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:06:44,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1871509567, now seen corresponding path program 1 times [2018-10-26 20:06:44,152 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 20:06:44,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:06:44,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:06:44,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:06:44,207 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 20:06:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:06:44,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:06:44,269 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:06:44,269 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 20:06:44,270 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 20:06:44,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 20:06:44,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 20:06:44,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 20:06:44,292 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-10-26 20:06:44,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:06:44,314 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2018-10-26 20:06:44,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 20:06:44,316 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-10-26 20:06:44,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:06:44,325 INFO L225 Difference]: With dead ends: 31 [2018-10-26 20:06:44,326 INFO L226 Difference]: Without dead ends: 12 [2018-10-26 20:06:44,329 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 [2018-10-26 20:06:44,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-26 20:06:44,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-26 20:06:44,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-26 20:06:44,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-26 20:06:44,369 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-26 20:06:44,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:06:44,370 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-26 20:06:44,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 20:06:44,370 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-26 20:06:44,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-26 20:06:44,371 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:06:44,372 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:06:44,372 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:06:44,373 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:06:44,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1861991801, now seen corresponding path program 1 times [2018-10-26 20:06:44,373 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 20:06:44,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:06:44,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:06:44,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:06:44,375 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 20:06:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 20:06:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 20:06:44,410 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 20:06:44,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 08:06:44 BoogieIcfgContainer [2018-10-26 20:06:44,435 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 20:06:44,435 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 20:06:44,436 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 20:06:44,436 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 20:06:44,436 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:06:44" (3/4) ... [2018-10-26 20:06:44,442 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-26 20:06:44,442 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 20:06:44,443 INFO L168 Benchmark]: Toolchain (without parser) took 1139.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.6 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -176.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:06:44,444 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 977.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:06:44,446 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.47 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 946.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:06:44,446 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.45 ms. Allocated memory is still 1.0 GB. Free memory is still 946.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:06:44,447 INFO L168 Benchmark]: Boogie Preprocessor took 22.19 ms. Allocated memory is still 1.0 GB. Free memory was 946.4 MB in the beginning and 941.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-26 20:06:44,448 INFO L168 Benchmark]: RCFGBuilder took 464.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.6 MB). Free memory was 941.0 MB in the beginning and 1.2 GB in the end (delta: -221.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2018-10-26 20:06:44,450 INFO L168 Benchmark]: TraceAbstraction took 406.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:06:44,451 INFO L168 Benchmark]: Witness Printer took 6.48 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. [2018-10-26 20:06:44,455 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 977.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 212.47 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 946.4 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 22.45 ms. Allocated memory is still 1.0 GB. Free memory is still 946.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.19 ms. Allocated memory is still 1.0 GB. Free memory was 946.4 MB in the beginning and 941.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 464.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.6 MB). Free memory was 941.0 MB in the beginning and 1.2 GB in the end (delta: -221.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 406.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. * Witness Printer took 6.48 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, 0.3s 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 [2018-10-26 20:06:46,654 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 20:06:46,656 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 20:06:46,672 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 20:06:46,673 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 20:06:46,675 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 20:06:46,678 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 20:06:46,681 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 20:06:46,684 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 20:06:46,685 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 20:06:46,687 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 20:06:46,687 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 20:06:46,688 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 20:06:46,688 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 20:06:46,689 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 20:06:46,690 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 20:06:46,690 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 20:06:46,691 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 20:06:46,692 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 20:06:46,694 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 20:06:46,695 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 20:06:46,696 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 20:06:46,698 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 20:06:46,699 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 20:06:46,699 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 20:06:46,700 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 20:06:46,701 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 20:06:46,702 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 20:06:46,703 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 20:06:46,704 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 20:06:46,704 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 20:06:46,706 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 20:06:46,706 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 20:06:46,706 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 20:06:46,707 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 20:06:46,708 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 20:06:46,708 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-10-26 20:06:46,722 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 20:06:46,722 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 20:06:46,723 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 20:06:46,723 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 20:06:46,724 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 20:06:46,724 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 20:06:46,724 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 20:06:46,724 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 20:06:46,726 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 20:06:46,726 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 20:06:46,726 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 20:06:46,726 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 20:06:46,727 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 20:06:46,727 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 20:06:46,727 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 20:06:46,727 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-26 20:06:46,727 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-26 20:06:46,727 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 20:06:46,728 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 20:06:46,728 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 20:06:46,728 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 20:06:46,728 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 20:06:46,728 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 20:06:46,728 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 20:06:46,730 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 20:06:46,731 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 20:06:46,731 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 20:06:46,731 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 20:06:46,731 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-10-26 20:06:46,731 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 20:06:46,732 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-26 20:06:46,732 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-26 20:06:46,732 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_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/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 [2018-10-26 20:06:46,779 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 20:06:46,795 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 20:06:46,800 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 20:06:46,802 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 20:06:46,802 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 20:06:46,803 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/bin-2019/utaipan/../../sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i [2018-10-26 20:06:46,860 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/bin-2019/utaipan/data/2b09e7ff6/bd3a7bdc920b4fe792cd3bd2022a9d9d/FLAG61e66fcaa [2018-10-26 20:06:47,318 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 20:06:47,323 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i [2018-10-26 20:06:47,331 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/bin-2019/utaipan/data/2b09e7ff6/bd3a7bdc920b4fe792cd3bd2022a9d9d/FLAG61e66fcaa [2018-10-26 20:06:47,350 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/bin-2019/utaipan/data/2b09e7ff6/bd3a7bdc920b4fe792cd3bd2022a9d9d [2018-10-26 20:06:47,356 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 20:06:47,357 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 20:06:47,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 20:06:47,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 20:06:47,364 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 20:06:47,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:06:47" (1/1) ... [2018-10-26 20:06:47,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ad7452c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:06:47, skipping insertion in model container [2018-10-26 20:06:47,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:06:47" (1/1) ... [2018-10-26 20:06:47,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 20:06:47,403 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 20:06:47,582 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:06:47,591 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 20:06:47,608 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:06:47,626 INFO L193 MainTranslator]: Completed translation [2018-10-26 20:06:47,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:06:47 WrapperNode [2018-10-26 20:06:47,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 20:06:47,628 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 20:06:47,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 20:06:47,628 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 20:06:47,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:06:47" (1/1) ... [2018-10-26 20:06:47,647 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:06:47" (1/1) ... [2018-10-26 20:06:47,655 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 20:06:47,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 20:06:47,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 20:06:47,655 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 20:06:47,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:06:47" (1/1) ... [2018-10-26 20:06:47,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:06:47" (1/1) ... [2018-10-26 20:06:47,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:06:47" (1/1) ... [2018-10-26 20:06:47,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:06:47" (1/1) ... [2018-10-26 20:06:47,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:06:47" (1/1) ... [2018-10-26 20:06:47,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:06:47" (1/1) ... [2018-10-26 20:06:47,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:06:47" (1/1) ... [2018-10-26 20:06:47,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 20:06:47,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 20:06:47,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 20:06:47,696 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 20:06:47,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:06:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/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 [2018-10-26 20:06:47,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 20:06:47,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 20:06:47,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 20:06:47,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 20:06:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 20:06:47,766 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 20:06:47,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 20:06:47,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 20:06:48,464 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 20:06:48,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:06:48 BoogieIcfgContainer [2018-10-26 20:06:48,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 20:06:48,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 20:06:48,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 20:06:48,471 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 20:06:48,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:06:47" (1/3) ... [2018-10-26 20:06:48,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b68e112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:06:48, skipping insertion in model container [2018-10-26 20:06:48,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:06:47" (2/3) ... [2018-10-26 20:06:48,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b68e112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:06:48, skipping insertion in model container [2018-10-26 20:06:48,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:06:48" (3/3) ... [2018-10-26 20:06:48,475 INFO L112 eAbstractionObserver]: Analyzing ICFG Float_div_true-unreach-call.i [2018-10-26 20:06:48,483 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 20:06:48,490 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 20:06:48,508 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 20:06:48,550 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 20:06:48,551 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 20:06:48,552 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 20:06:48,552 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 20:06:48,552 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 20:06:48,552 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 20:06:48,552 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 20:06:48,553 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 20:06:48,553 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 20:06:48,576 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-10-26 20:06:48,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-26 20:06:48,584 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:06:48,585 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:06:48,588 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:06:48,593 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:06:48,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1871509567, now seen corresponding path program 1 times [2018-10-26 20:06:48,597 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:06:48,598 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/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 [2018-10-26 20:06:48,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:06:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:06:48,733 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:06:48,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:06:48,765 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:06:48,778 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:06:48,778 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 20:06:48,781 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 20:06:48,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 20:06:48,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 20:06:48,794 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-10-26 20:06:48,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:06:48,815 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2018-10-26 20:06:48,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 20:06:48,816 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-10-26 20:06:48,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:06:48,826 INFO L225 Difference]: With dead ends: 31 [2018-10-26 20:06:48,826 INFO L226 Difference]: Without dead ends: 12 [2018-10-26 20:06:48,830 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 [2018-10-26 20:06:48,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-26 20:06:48,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-26 20:06:48,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-26 20:06:48,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-26 20:06:48,867 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-26 20:06:48,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:06:48,867 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-26 20:06:48,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 20:06:48,868 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-26 20:06:48,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-26 20:06:48,868 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:06:48,868 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:06:48,870 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:06:48,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:06:48,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1861991801, now seen corresponding path program 1 times [2018-10-26 20:06:48,871 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:06:48,871 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 20:06:48,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-10-26 20:06:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:06:48,958 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:06:49,196 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-26 20:06:49,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:06:49,207 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:06:49,222 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:06:49,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 20:06:49,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 20:06:49,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 20:06:49,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 20:06:49,225 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2018-10-26 20:06:49,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:06:49,609 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-26 20:06:49,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 20:06:49,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-10-26 20:06:49,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:06:49,702 INFO L225 Difference]: With dead ends: 19 [2018-10-26 20:06:49,703 INFO L226 Difference]: Without dead ends: 14 [2018-10-26 20:06:49,703 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 20:06:49,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-26 20:06:49,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-26 20:06:49,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-26 20:06:49,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-26 20:06:49,708 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-10-26 20:06:49,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:06:49,710 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-26 20:06:49,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 20:06:49,710 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-26 20:06:49,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-26 20:06:49,710 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:06:49,711 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:06:49,711 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:06:49,711 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:06:49,712 INFO L82 PathProgramCache]: Analyzing trace with hash -661808769, now seen corresponding path program 1 times [2018-10-26 20:06:49,712 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:06:49,712 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 20:06:49,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-10-26 20:06:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:06:49,842 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:06:50,403 WARN L179 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-26 20:06:50,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:06:50,427 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 20:06:52,586 WARN L179 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-10-26 20:06:52,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:06:52,612 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 20:06:52,612 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/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 [2018-10-26 20:06:52,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:06:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:06:53,576 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:06:53,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:06:53,596 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 20:07:09,844 WARN L179 SmtUtils]: Spent 4.65 s on a formula simplification that was a NOOP. DAG size: 11 [2018-10-26 20:07:09,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:07:09,892 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-10-26 20:07:09,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 7] total 11 [2018-10-26 20:07:09,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-26 20:07:09,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-26 20:07:09,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=81, Unknown=1, NotChecked=0, Total=110 [2018-10-26 20:07:09,893 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 11 states. [2018-10-26 20:07:16,969 WARN L179 SmtUtils]: Spent 2.22 s on a formula simplification that was a NOOP. DAG size: 11 [2018-10-26 20:07:25,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:07:25,127 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2018-10-26 20:07:25,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 20:07:25,128 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2018-10-26 20:07:25,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:07:25,128 INFO L225 Difference]: With dead ends: 25 [2018-10-26 20:07:25,128 INFO L226 Difference]: Without dead ends: 20 [2018-10-26 20:07:25,129 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 24.7s TimeCoverageRelationStatistics Valid=43, Invalid=112, Unknown=1, NotChecked=0, Total=156 [2018-10-26 20:07:25,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-26 20:07:25,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-26 20:07:25,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-26 20:07:25,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-26 20:07:25,133 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 13 [2018-10-26 20:07:25,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:07:25,133 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-26 20:07:25,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-26 20:07:25,133 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-26 20:07:25,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-26 20:07:25,134 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:07:25,135 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:07:25,135 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:07:25,135 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:07:25,135 INFO L82 PathProgramCache]: Analyzing trace with hash -875350895, now seen corresponding path program 2 times [2018-10-26 20:07:25,136 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:07:25,136 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/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 [2018-10-26 20:07:25,143 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-10-26 20:07:25,371 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-26 20:07:25,371 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 20:07:25,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:07:26,858 WARN L179 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-26 20:07:26,863 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:07:26,863 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 20:07:39,472 WARN L179 SmtUtils]: Spent 3.61 s on a formula simplification that was a NOOP. DAG size: 11 [2018-10-26 20:08:16,499 WARN L179 SmtUtils]: Spent 8.63 s on a formula simplification that was a NOOP. DAG size: 12 [2018-10-26 20:08:18,586 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 [2018-10-26 20:08:20,677 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 [2018-10-26 20:08:24,648 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 [2018-10-26 20:08:24,659 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 4 times theorem prover too weak. 0 trivial. 14 not checked. [2018-10-26 20:08:24,670 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 20:08:24,670 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/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 [2018-10-26 20:08:24,678 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-26 20:08:34,777 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-26 20:08:34,777 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 20:08:34,878 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:08:37,630 WARN L179 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-26 20:08:40,404 WARN L179 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2018-10-26 20:08:42,157 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:08:42,158 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 20:08:59,232 WARN L179 SmtUtils]: Spent 4.43 s on a formula simplification that was a NOOP. DAG size: 13 [2018-10-26 20:09:02,644 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 [2018-10-26 20:09:04,753 WARN L832 $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 false [2018-10-26 20:09:06,834 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 [2018-10-26 20:09:08,951 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 [2018-10-26 20:09:11,060 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 [2018-10-26 20:09:11,070 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 18 not checked. [2018-10-26 20:09:11,118 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-10-26 20:09:11,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 7, 10] total 21 [2018-10-26 20:09:11,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-26 20:09:11,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-26 20:09:11,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=173, Unknown=18, NotChecked=160, Total=420 [2018-10-26 20:09:11,120 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 21 states. [2018-10-26 20:09:13,252 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 [2018-10-26 20:09:15,353 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 [2018-10-26 20:09:20,099 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 [2018-10-26 20:09:57,788 WARN L179 SmtUtils]: Spent 15.93 s on a formula simplification that was a NOOP. DAG size: 18 [2018-10-26 20:10:30,495 WARN L179 SmtUtils]: Spent 15.48 s on a formula simplification that was a NOOP. DAG size: 15 [2018-10-26 20:10:47,702 WARN L179 SmtUtils]: Spent 4.11 s on a formula simplification that was a NOOP. DAG size: 17 [2018-10-26 20:11:05,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:11:05,700 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2018-10-26 20:11:05,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-26 20:11:05,701 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 19 [2018-10-26 20:11:05,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:11:05,702 INFO L225 Difference]: With dead ends: 36 [2018-10-26 20:11:05,702 INFO L226 Difference]: Without dead ends: 28 [2018-10-26 20:11:05,703 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 50 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 190.8s TimeCoverageRelationStatistics Valid=106, Invalid=278, Unknown=28, NotChecked=344, Total=756 [2018-10-26 20:11:05,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-26 20:11:05,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-26 20:11:05,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-26 20:11:05,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-10-26 20:11:05,708 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 19 [2018-10-26 20:11:05,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:11:05,708 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-10-26 20:11:05,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-26 20:11:05,710 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-10-26 20:11:05,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-26 20:11:05,711 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:11:05,711 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:11:05,712 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:11:05,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:11:05,712 INFO L82 PathProgramCache]: Analyzing trace with hash 397284265, now seen corresponding path program 3 times [2018-10-26 20:11:05,712 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:11:05,712 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/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 [2018-10-26 20:11:05,718 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-10-26 20:11:05,941 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-26 20:11:05,941 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 20:11:05,956 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:11:06,438 WARN L179 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-10-26 20:11:20,559 WARN L179 SmtUtils]: Spent 9.44 s on a formula simplification that was a NOOP. DAG size: 15 [2018-10-26 20:11:22,626 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 [2018-10-26 20:11:33,183 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 [2018-10-26 20:11:43,507 WARN L832 $PredicateComparison]: unable to prove that (or (and (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))))))) (= (bvadd c___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (and (= (_ bv0 32) c___VERIFIER_assert_~cond) (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)))))))) is different from false [2018-10-26 20:11:49,684 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 [2018-10-26 20:11:51,736 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 [2018-10-26 20:11:51,739 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-10-26 20:11:51,740 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:11:51,759 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:11:51,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-26 20:11:51,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 20:11:51,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 20:11:51,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=8, Unknown=6, NotChecked=28, Total=56 [2018-10-26 20:11:51,760 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 8 states. [2018-10-26 20:12:02,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:12:02,743 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-10-26 20:12:02,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 20:12:02,798 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2018-10-26 20:12:02,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:12:02,799 INFO L225 Difference]: With dead ends: 28 [2018-10-26 20:12:02,799 INFO L226 Difference]: Without dead ends: 0 [2018-10-26 20:12:02,800 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.2s TimeCoverageRelationStatistics Valid=14, Invalid=8, Unknown=6, NotChecked=28, Total=56 [2018-10-26 20:12:02,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-26 20:12:02,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-26 20:12:02,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-26 20:12:02,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-26 20:12:02,801 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-10-26 20:12:02,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:12:02,801 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-26 20:12:02,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 20:12:02,802 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-26 20:12:02,802 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 20:12:02,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-26 20:12:54,263 WARN L179 SmtUtils]: Spent 51.34 s on a formula simplification that was a NOOP. DAG size: 31 [2018-10-26 20:12:54,593 WARN L179 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 1 [2018-10-26 20:13:46,434 WARN L179 SmtUtils]: Spent 51.84 s on a formula simplification. DAG size of input: 44 DAG size of output: 15 [2018-10-26 20:13:46,436 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-26 20:13:46,436 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-26 20:13:46,436 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-26 20:13:46,436 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-26 20:13:46,436 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-26 20:13:46,436 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-26 20:13:46,436 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 7 20) the Hoare annotation is: true [2018-10-26 20:13:46,437 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 7 20) no Hoare annotation was computed. [2018-10-26 20:13:46,437 INFO L425 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-10-26 20:13:46,437 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 7 20) no Hoare annotation was computed. [2018-10-26 20:13:46,437 INFO L425 ceAbstractionStarter]: For program point L12-1(lines 12 16) no Hoare annotation was computed. [2018-10-26 20:13:46,437 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))))) [2018-10-26 20:13:46,438 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))))) [2018-10-26 20:13:46,438 INFO L425 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2018-10-26 20:13:46,438 INFO L425 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2018-10-26 20:13:46,438 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2018-10-26 20:13:46,438 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2018-10-26 20:13:46,438 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2018-10-26 20:13:46,438 INFO L425 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2018-10-26 20:13:46,447 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 20:13:46,448 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2018-10-26 20:13:46,448 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 20:13:46,449 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 20:13:46,449 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2018-10-26 20:13:46,449 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 20:13:46,449 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2018-10-26 20:13:46,450 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 20:13:46,450 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 20:13:46,455 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 20:13:46,456 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2018-10-26 20:13:46,456 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 20:13:46,456 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 20:13:46,458 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2018-10-26 20:13:46,458 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 20:13:46,458 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2018-10-26 20:13:46,458 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 20:13:46,458 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 20:13:46,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 08:13:46 BoogieIcfgContainer [2018-10-26 20:13:46,462 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 20:13:46,462 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 20:13:46,462 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 20:13:46,462 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 20:13:46,463 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:06:48" (3/4) ... [2018-10-26 20:13:46,466 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-26 20:13:46,472 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-26 20:13:46,472 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-26 20:13:46,472 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-10-26 20:13:46,476 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-10-26 20:13:46,477 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-10-26 20:13:46,477 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-26 20:13:46,503 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)) [2018-10-26 20:13:46,513 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_fdc14e4a-7ea4-4b43-bc4c-ef3a87fcdbfa/bin-2019/utaipan/witness.graphml [2018-10-26 20:13:46,513 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 20:13:46,514 INFO L168 Benchmark]: Toolchain (without parser) took 419158.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 953.2 MB in the beginning and 940.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 171.3 MB. Max. memory is 11.5 GB. [2018-10-26 20:13:46,515 INFO L168 Benchmark]: CDTParser took 0.46 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. [2018-10-26 20:13:46,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.81 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:13:46,516 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.98 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:13:46,516 INFO L168 Benchmark]: Boogie Preprocessor took 40.55 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-26 20:13:46,517 INFO L168 Benchmark]: RCFGBuilder took 768.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -196.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. [2018-10-26 20:13:46,517 INFO L168 Benchmark]: TraceAbstraction took 417996.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 940.2 MB in the end (delta: 193.0 MB). Peak memory consumption was 193.0 MB. Max. memory is 11.5 GB. [2018-10-26 20:13:46,518 INFO L168 Benchmark]: Witness Printer took 51.18 ms. Allocated memory is still 1.2 GB. Free memory is still 940.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:13:46,521 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 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 268.81 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.98 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.55 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 768.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -196.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 417996.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 940.2 MB in the end (delta: 193.0 MB). Peak memory consumption was 193.0 MB. Max. memory is 11.5 GB. * Witness Printer took 51.18 ms. Allocated memory is still 1.2 GB. Free memory is still 940.2 MB. There was no memory consumed. 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 [2018-10-26 20:13:46,528 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 20:13:46,528 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2018-10-26 20:13:46,528 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 20:13:46,528 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 20:13:46,529 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2018-10-26 20:13:46,529 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 20:13:46,529 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2018-10-26 20:13:46,529 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 20:13:46,529 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 20:13:46,530 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 20:13:46,530 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2018-10-26 20:13:46,530 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 20:13:46,531 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 20:13:46,531 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2018-10-26 20:13:46,531 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 20:13:46,531 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2018-10-26 20:13:46,531 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 20:13:46,532 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, 417.9s OverallTime, 5 OverallIterations, 9 TraceHistogramMax, 141.3s AutomataDifference, 0.0s DeadEndRemovalTime, 103.6s HoareAnnotationTime, HoareTripleCheckerStatistics: 64 SDtfs, 7 SDslu, 176 SDs, 0 SdLazy, 81 SolverSat, 13 SolverUnsat, 13 SolverUnknown, 0 SolverNotchecked, 38.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 179 GetRequests, 124 SyntacticMatches, 11 SemanticMatches, 44 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 241.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 22 NumberOfFragments, 116 HoareAnnotationTreeSize, 12 FomulaSimplifications, 507 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 359 FormulaSimplificationTreeSizeReductionInter, 103.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 11.7s SatisfiabilityAnalysisTime, 160.7s InterpolantComputationTime, 112 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 165 ConstructedInterpolants, 6 QuantifiedInterpolants, 35365 SizeOfPredicates, 18 NumberOfNonLiveVariables, 191 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 72/160 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...