./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_95c1737f-e1ad-4bd1-9aa4-ef4f028dafb9/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_95c1737f-e1ad-4bd1-9aa4-ef4f028dafb9/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_95c1737f-e1ad-4bd1-9aa4-ef4f028dafb9/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_95c1737f-e1ad-4bd1-9aa4-ef4f028dafb9/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_95c1737f-e1ad-4bd1-9aa4-ef4f028dafb9/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_95c1737f-e1ad-4bd1-9aa4-ef4f028dafb9/bin-2019/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8ccc35369aa7fc4059706b8166915b481ecdc09d ............................................................................................................................................................................................................................................... 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_95c1737f-e1ad-4bd1-9aa4-ef4f028dafb9/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_95c1737f-e1ad-4bd1-9aa4-ef4f028dafb9/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_95c1737f-e1ad-4bd1-9aa4-ef4f028dafb9/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_95c1737f-e1ad-4bd1-9aa4-ef4f028dafb9/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_95c1737f-e1ad-4bd1-9aa4-ef4f028dafb9/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_95c1737f-e1ad-4bd1-9aa4-ef4f028dafb9/bin-2019/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8ccc35369aa7fc4059706b8166915b481ecdc09d ................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 11:39:11,725 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 11:39:11,726 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 11:39:11,735 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 11:39:11,735 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 11:39:11,736 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 11:39:11,737 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 11:39:11,738 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 11:39:11,739 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 11:39:11,740 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 11:39:11,741 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 11:39:11,741 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 11:39:11,742 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 11:39:11,742 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 11:39:11,743 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 11:39:11,743 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 11:39:11,744 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 11:39:11,745 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 11:39:11,747 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 11:39:11,747 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 11:39:11,748 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 11:39:11,749 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 11:39:11,750 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 11:39:11,750 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 11:39:11,750 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 11:39:11,751 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 11:39:11,752 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 11:39:11,752 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 11:39:11,753 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 11:39:11,753 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 11:39:11,754 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 11:39:11,754 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 11:39:11,754 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 11:39:11,754 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 11:39:11,755 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 11:39:11,756 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 11:39:11,756 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_95c1737f-e1ad-4bd1-9aa4-ef4f028dafb9/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 11:39:11,765 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 11:39:11,765 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 11:39:11,766 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 11:39:11,766 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 11:39:11,766 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 11:39:11,767 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 11:39:11,767 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 11:39:11,767 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 11:39:11,767 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 11:39:11,767 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 11:39:11,768 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 11:39:11,768 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 11:39:11,768 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 11:39:11,768 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 11:39:11,768 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 11:39:11,768 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 11:39:11,769 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 11:39:11,769 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 11:39:11,769 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 11:39:11,769 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 11:39:11,769 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 11:39:11,770 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 11:39:11,770 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 11:39:11,770 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 11:39:11,770 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 11:39:11,770 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 11:39:11,770 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 11:39:11,771 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 11:39:11,771 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 11:39:11,771 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 11:39:11,771 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_95c1737f-e1ad-4bd1-9aa4-ef4f028dafb9/bin-2019/uautomizer 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 -> Automizer 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 -> 8ccc35369aa7fc4059706b8166915b481ecdc09d [2018-11-28 11:39:11,800 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 11:39:11,811 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 11:39:11,814 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 11:39:11,815 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 11:39:11,816 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 11:39:11,816 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_95c1737f-e1ad-4bd1-9aa4-ef4f028dafb9/bin-2019/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6_true-unreach-call_true-termination.i [2018-11-28 11:39:11,867 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_95c1737f-e1ad-4bd1-9aa4-ef4f028dafb9/bin-2019/uautomizer/data/7af9706e3/797e79b00e364d46b8d9f95525482df9/FLAG93c4a9139 [2018-11-28 11:39:12,238 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 11:39:12,238 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_95c1737f-e1ad-4bd1-9aa4-ef4f028dafb9/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6_true-unreach-call_true-termination.i [2018-11-28 11:39:12,243 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_95c1737f-e1ad-4bd1-9aa4-ef4f028dafb9/bin-2019/uautomizer/data/7af9706e3/797e79b00e364d46b8d9f95525482df9/FLAG93c4a9139 [2018-11-28 11:39:12,254 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_95c1737f-e1ad-4bd1-9aa4-ef4f028dafb9/bin-2019/uautomizer/data/7af9706e3/797e79b00e364d46b8d9f95525482df9 [2018-11-28 11:39:12,257 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 11:39:12,258 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 11:39:12,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 11:39:12,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 11:39:12,262 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 11:39:12,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:39:12" (1/1) ... [2018-11-28 11:39:12,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e55ba31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:12, skipping insertion in model container [2018-11-28 11:39:12,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:39:12" (1/1) ... [2018-11-28 11:39:12,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 11:39:12,283 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 11:39:12,421 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:39:12,426 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 11:39:12,444 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:39:12,455 INFO L195 MainTranslator]: Completed translation [2018-11-28 11:39:12,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:12 WrapperNode [2018-11-28 11:39:12,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 11:39:12,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 11:39:12,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 11:39:12,456 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 11:39:12,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:12" (1/1) ... [2018-11-28 11:39:12,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:12" (1/1) ... [2018-11-28 11:39:12,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 11:39:12,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 11:39:12,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 11:39:12,471 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 11:39:12,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:12" (1/1) ... [2018-11-28 11:39:12,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:12" (1/1) ... [2018-11-28 11:39:12,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:12" (1/1) ... [2018-11-28 11:39:12,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:12" (1/1) ... [2018-11-28 11:39:12,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:12" (1/1) ... [2018-11-28 11:39:12,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:12" (1/1) ... [2018-11-28 11:39:12,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:12" (1/1) ... [2018-11-28 11:39:12,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 11:39:12,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 11:39:12,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 11:39:12,484 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 11:39:12,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95c1737f-e1ad-4bd1-9aa4-ef4f028dafb9/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 11:39:12,563 INFO L130 BoogieDeclarations]: Found specification of procedure cast [2018-11-28 11:39:12,563 INFO L138 BoogieDeclarations]: Found implementation of procedure cast [2018-11-28 11:39:12,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 11:39:12,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 11:39:12,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 11:39:12,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 11:39:12,564 INFO L130 BoogieDeclarations]: Found specification of procedure divide [2018-11-28 11:39:12,564 INFO L138 BoogieDeclarations]: Found implementation of procedure divide [2018-11-28 11:39:12,564 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 11:39:12,564 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 11:39:12,564 INFO L130 BoogieDeclarations]: Found specification of procedure multiply [2018-11-28 11:39:12,564 INFO L138 BoogieDeclarations]: Found implementation of procedure multiply [2018-11-28 11:39:12,667 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 11:39:12,668 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-28 11:39:12,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:39:12 BoogieIcfgContainer [2018-11-28 11:39:12,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 11:39:12,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 11:39:12,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 11:39:12,671 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 11:39:12,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:39:12" (1/3) ... [2018-11-28 11:39:12,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30951928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:39:12, skipping insertion in model container [2018-11-28 11:39:12,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:12" (2/3) ... [2018-11-28 11:39:12,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30951928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:39:12, skipping insertion in model container [2018-11-28 11:39:12,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:39:12" (3/3) ... [2018-11-28 11:39:12,673 INFO L112 eAbstractionObserver]: Analyzing ICFG float-no-simp6_true-unreach-call_true-termination.i [2018-11-28 11:39:12,680 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 11:39:12,685 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-28 11:39:12,697 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-28 11:39:12,722 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 11:39:12,723 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 11:39:12,723 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 11:39:12,723 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 11:39:12,723 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 11:39:12,723 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 11:39:12,723 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 11:39:12,723 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 11:39:12,723 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 11:39:12,738 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-11-28 11:39:12,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-28 11:39:12,744 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:39:12,745 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:39:12,747 INFO L423 AbstractCegarLoop]: === Iteration 1 === [castErr0ASSERT_VIOLATIONERROR_FUNCTION, divideErr0ASSERT_VIOLATIONERROR_FUNCTION, multiplyErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:39:12,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:39:12,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1434687897, now seen corresponding path program 1 times [2018-11-28 11:39:12,752 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:39:12,753 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:39:12,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:39:12,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:39:12,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:39:12,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:39:12,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:39:12,824 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 11:39:12,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:39:12 BoogieIcfgContainer [2018-11-28 11:39:12,840 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 11:39:12,840 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 11:39:12,840 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 11:39:12,841 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 11:39:12,841 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:39:12" (3/4) ... [2018-11-28 11:39:12,843 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 11:39:12,844 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 11:39:12,844 INFO L168 Benchmark]: Toolchain (without parser) took 587.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 956.0 MB in the beginning and 1.1 GB in the end (delta: -142.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:39:12,846 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:39:12,846 INFO L168 Benchmark]: CACSL2BoogieTranslator took 197.02 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 11:39:12,847 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.59 ms. Allocated memory is still 1.0 GB. Free memory was 945.3 MB in the beginning and 939.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 11:39:12,847 INFO L168 Benchmark]: Boogie Preprocessor took 12.90 ms. Allocated memory is still 1.0 GB. Free memory is still 939.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:39:12,847 INFO L168 Benchmark]: RCFGBuilder took 184.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -174.5 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. [2018-11-28 11:39:12,848 INFO L168 Benchmark]: TraceAbstraction took 171.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 11:39:12,849 INFO L168 Benchmark]: Witness Printer took 3.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 11:39:12,852 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 197.02 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 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 14.59 ms. Allocated memory is still 1.0 GB. Free memory was 945.3 MB in the beginning and 939.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.90 ms. Allocated memory is still 1.0 GB. Free memory is still 939.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 184.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -174.5 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 171.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Witness Printer took 3.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 10, overapproximation of someBinaryArithmeticFLOAToperation at line 8. Possible FailurePath: [L34] CALL multiply() [L5] float f1=0x1.000000p-1f; [L6] float f2=0x1.fffffep-126f; [L8] float res = f1 * f2; VAL [f1=1/2, f2=16777215/713623846352979940529142984724747568191373312] [L10] COND TRUE !(res == 0x1.0p-126f) VAL [f1=1/2, f2=16777215/713623846352979940529142984724747568191373312] [L10] __VERIFIER_error() VAL [f1=1/2, f2=16777215/713623846352979940529142984724747568191373312] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 3 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 0.1.23-0cd3be1 [2018-11-28 11:39:14,450 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 11:39:14,451 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 11:39:14,460 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 11:39:14,460 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 11:39:14,461 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 11:39:14,462 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 11:39:14,463 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 11:39:14,464 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 11:39:14,465 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 11:39:14,466 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 11:39:14,466 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 11:39:14,467 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 11:39:14,467 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 11:39:14,468 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 11:39:14,468 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 11:39:14,469 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 11:39:14,471 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 11:39:14,472 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 11:39:14,473 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 11:39:14,474 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 11:39:14,475 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 11:39:14,478 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 11:39:14,478 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 11:39:14,478 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 11:39:14,479 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 11:39:14,480 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 11:39:14,481 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 11:39:14,482 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 11:39:14,482 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 11:39:14,483 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 11:39:14,483 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 11:39:14,484 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 11:39:14,484 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 11:39:14,485 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 11:39:14,485 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 11:39:14,486 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_95c1737f-e1ad-4bd1-9aa4-ef4f028dafb9/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 11:39:14,498 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 11:39:14,498 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 11:39:14,499 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 11:39:14,499 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 11:39:14,499 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 11:39:14,499 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 11:39:14,500 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 11:39:14,500 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 11:39:14,500 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 11:39:14,500 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 11:39:14,500 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 11:39:14,500 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 11:39:14,500 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 11:39:14,501 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 11:39:14,501 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 11:39:14,501 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 11:39:14,501 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 11:39:14,501 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 11:39:14,501 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 11:39:14,501 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 11:39:14,502 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 11:39:14,502 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 11:39:14,502 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 11:39:14,502 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 11:39:14,502 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 11:39:14,502 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 11:39:14,503 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 11:39:14,503 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 11:39:14,503 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 11:39:14,503 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 11:39:14,503 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 11:39:14,503 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 11:39:14,503 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_95c1737f-e1ad-4bd1-9aa4-ef4f028dafb9/bin-2019/uautomizer 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 -> Automizer 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 -> 8ccc35369aa7fc4059706b8166915b481ecdc09d [2018-11-28 11:39:14,530 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 11:39:14,539 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 11:39:14,542 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 11:39:14,543 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 11:39:14,543 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 11:39:14,544 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_95c1737f-e1ad-4bd1-9aa4-ef4f028dafb9/bin-2019/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6_true-unreach-call_true-termination.i [2018-11-28 11:39:14,586 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_95c1737f-e1ad-4bd1-9aa4-ef4f028dafb9/bin-2019/uautomizer/data/eec386307/b1b960daa3c2421fac11d5e76ec40bac/FLAG203c6e432 [2018-11-28 11:39:14,920 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 11:39:14,920 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_95c1737f-e1ad-4bd1-9aa4-ef4f028dafb9/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6_true-unreach-call_true-termination.i [2018-11-28 11:39:14,924 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_95c1737f-e1ad-4bd1-9aa4-ef4f028dafb9/bin-2019/uautomizer/data/eec386307/b1b960daa3c2421fac11d5e76ec40bac/FLAG203c6e432 [2018-11-28 11:39:15,357 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_95c1737f-e1ad-4bd1-9aa4-ef4f028dafb9/bin-2019/uautomizer/data/eec386307/b1b960daa3c2421fac11d5e76ec40bac [2018-11-28 11:39:15,360 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 11:39:15,361 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 11:39:15,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 11:39:15,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 11:39:15,364 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 11:39:15,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:39:15" (1/1) ... [2018-11-28 11:39:15,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66c7bdae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:15, skipping insertion in model container [2018-11-28 11:39:15,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:39:15" (1/1) ... [2018-11-28 11:39:15,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 11:39:15,382 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 11:39:15,504 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:39:15,511 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 11:39:15,527 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:39:15,538 INFO L195 MainTranslator]: Completed translation [2018-11-28 11:39:15,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:15 WrapperNode [2018-11-28 11:39:15,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 11:39:15,539 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 11:39:15,539 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 11:39:15,539 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 11:39:15,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:15" (1/1) ... [2018-11-28 11:39:15,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:15" (1/1) ... [2018-11-28 11:39:15,555 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 11:39:15,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 11:39:15,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 11:39:15,555 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 11:39:15,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:15" (1/1) ... [2018-11-28 11:39:15,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:15" (1/1) ... [2018-11-28 11:39:15,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:15" (1/1) ... [2018-11-28 11:39:15,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:15" (1/1) ... [2018-11-28 11:39:15,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:15" (1/1) ... [2018-11-28 11:39:15,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:15" (1/1) ... [2018-11-28 11:39:15,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:15" (1/1) ... [2018-11-28 11:39:15,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 11:39:15,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 11:39:15,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 11:39:15,574 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 11:39:15,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95c1737f-e1ad-4bd1-9aa4-ef4f028dafb9/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 11:39:15,663 INFO L130 BoogieDeclarations]: Found specification of procedure cast [2018-11-28 11:39:15,663 INFO L138 BoogieDeclarations]: Found implementation of procedure cast [2018-11-28 11:39:15,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 11:39:15,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 11:39:15,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 11:39:15,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 11:39:15,664 INFO L130 BoogieDeclarations]: Found specification of procedure divide [2018-11-28 11:39:15,664 INFO L138 BoogieDeclarations]: Found implementation of procedure divide [2018-11-28 11:39:15,664 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 11:39:15,664 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 11:39:15,665 INFO L130 BoogieDeclarations]: Found specification of procedure multiply [2018-11-28 11:39:15,665 INFO L138 BoogieDeclarations]: Found implementation of procedure multiply [2018-11-28 11:39:15,812 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 11:39:15,812 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-28 11:39:15,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:39:15 BoogieIcfgContainer [2018-11-28 11:39:15,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 11:39:15,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 11:39:15,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 11:39:15,817 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 11:39:15,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:39:15" (1/3) ... [2018-11-28 11:39:15,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316ab0f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:39:15, skipping insertion in model container [2018-11-28 11:39:15,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:15" (2/3) ... [2018-11-28 11:39:15,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316ab0f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:39:15, skipping insertion in model container [2018-11-28 11:39:15,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:39:15" (3/3) ... [2018-11-28 11:39:15,821 INFO L112 eAbstractionObserver]: Analyzing ICFG float-no-simp6_true-unreach-call_true-termination.i [2018-11-28 11:39:15,832 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 11:39:15,838 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-28 11:39:15,854 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-28 11:39:15,877 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 11:39:15,877 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 11:39:15,878 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 11:39:15,878 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 11:39:15,878 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 11:39:15,878 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 11:39:15,878 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 11:39:15,878 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 11:39:15,878 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 11:39:15,891 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-11-28 11:39:15,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-28 11:39:15,896 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:39:15,897 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:39:15,899 INFO L423 AbstractCegarLoop]: === Iteration 1 === [castErr0ASSERT_VIOLATIONERROR_FUNCTION, divideErr0ASSERT_VIOLATIONERROR_FUNCTION, multiplyErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:39:15,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:39:15,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1434687897, now seen corresponding path program 1 times [2018-11-28 11:39:15,906 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 11:39:15,906 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95c1737f-e1ad-4bd1-9aa4-ef4f028dafb9/bin-2019/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-28 11:39:15,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:39:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:39:15,983 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:39:16,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:39:16,027 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 11:39:16,037 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:39:16,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 11:39:16,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 11:39:16,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 11:39:16,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:39:16,059 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2018-11-28 11:39:16,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:39:16,080 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2018-11-28 11:39:16,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 11:39:16,082 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-11-28 11:39:16,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:39:16,089 INFO L225 Difference]: With dead ends: 49 [2018-11-28 11:39:16,090 INFO L226 Difference]: Without dead ends: 21 [2018-11-28 11:39:16,093 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:39:16,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-28 11:39:16,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-28 11:39:16,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-28 11:39:16,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2018-11-28 11:39:16,122 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 8 [2018-11-28 11:39:16,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:39:16,123 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2018-11-28 11:39:16,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 11:39:16,123 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2018-11-28 11:39:16,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-28 11:39:16,124 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:39:16,124 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:39:16,124 INFO L423 AbstractCegarLoop]: === Iteration 2 === [castErr0ASSERT_VIOLATIONERROR_FUNCTION, divideErr0ASSERT_VIOLATIONERROR_FUNCTION, multiplyErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:39:16,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:39:16,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1652764716, now seen corresponding path program 1 times [2018-11-28 11:39:16,125 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 11:39:16,125 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95c1737f-e1ad-4bd1-9aa4-ef4f028dafb9/bin-2019/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-28 11:39:16,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:39:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:39:16,369 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:39:16,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:39:16,386 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 11:39:16,396 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:39:16,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 11:39:16,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 11:39:16,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 11:39:16,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:39:16,398 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand 3 states. [2018-11-28 11:39:16,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:39:16,403 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2018-11-28 11:39:16,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 11:39:16,403 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-11-28 11:39:16,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:39:16,404 INFO L225 Difference]: With dead ends: 21 [2018-11-28 11:39:16,404 INFO L226 Difference]: Without dead ends: 19 [2018-11-28 11:39:16,405 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:39:16,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-28 11:39:16,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-28 11:39:16,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-28 11:39:16,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2018-11-28 11:39:16,408 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 13 [2018-11-28 11:39:16,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:39:16,409 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2018-11-28 11:39:16,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 11:39:16,409 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2018-11-28 11:39:16,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 11:39:16,409 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:39:16,410 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:39:16,410 INFO L423 AbstractCegarLoop]: === Iteration 3 === [castErr0ASSERT_VIOLATIONERROR_FUNCTION, divideErr0ASSERT_VIOLATIONERROR_FUNCTION, multiplyErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:39:16,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:39:16,410 INFO L82 PathProgramCache]: Analyzing trace with hash -207607829, now seen corresponding path program 1 times [2018-11-28 11:39:16,410 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 11:39:16,410 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95c1737f-e1ad-4bd1-9aa4-ef4f028dafb9/bin-2019/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-28 11:39:16,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:39:16,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:39:16,682 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:39:16,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:39:16,698 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 11:39:16,709 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:39:16,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 11:39:16,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 11:39:16,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 11:39:16,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:39:16,710 INFO L87 Difference]: Start difference. First operand 19 states and 18 transitions. Second operand 3 states. [2018-11-28 11:39:16,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:39:16,712 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2018-11-28 11:39:16,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 11:39:16,713 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-11-28 11:39:16,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:39:16,713 INFO L225 Difference]: With dead ends: 19 [2018-11-28 11:39:16,713 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 11:39:16,714 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:39:16,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 11:39:16,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 11:39:16,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 11:39:16,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 11:39:16,715 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2018-11-28 11:39:16,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:39:16,715 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 11:39:16,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 11:39:16,715 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 11:39:16,715 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 11:39:16,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 11:39:16,760 INFO L448 ceAbstractionStarter]: For program point castErr0ASSERT_VIOLATIONERROR_FUNCTION(line 29) no Hoare annotation was computed. [2018-11-28 11:39:16,760 INFO L448 ceAbstractionStarter]: For program point castEXIT(lines 23 30) no Hoare annotation was computed. [2018-11-28 11:39:16,760 INFO L448 ceAbstractionStarter]: For program point L29(line 29) no Hoare annotation was computed. [2018-11-28 11:39:16,760 INFO L448 ceAbstractionStarter]: For program point L29-1(line 29) no Hoare annotation was computed. [2018-11-28 11:39:16,761 INFO L451 ceAbstractionStarter]: At program point castENTRY(lines 23 30) the Hoare annotation is: true [2018-11-28 11:39:16,761 INFO L448 ceAbstractionStarter]: For program point L29-3(lines 23 30) no Hoare annotation was computed. [2018-11-28 11:39:16,761 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-28 11:39:16,761 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 11:39:16,761 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 11:39:16,761 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 11:39:16,761 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 11:39:16,762 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 11:39:16,762 INFO L448 ceAbstractionStarter]: For program point L20-3(lines 13 21) no Hoare annotation was computed. [2018-11-28 11:39:16,762 INFO L451 ceAbstractionStarter]: At program point divideENTRY(lines 13 21) the Hoare annotation is: true [2018-11-28 11:39:16,762 INFO L448 ceAbstractionStarter]: For program point divideEXIT(lines 13 21) no Hoare annotation was computed. [2018-11-28 11:39:16,762 INFO L448 ceAbstractionStarter]: For program point divideErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2018-11-28 11:39:16,762 INFO L448 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-11-28 11:39:16,762 INFO L448 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-11-28 11:39:16,763 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 32 37) the Hoare annotation is: true [2018-11-28 11:39:16,763 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 32 37) no Hoare annotation was computed. [2018-11-28 11:39:16,763 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 32 37) no Hoare annotation was computed. [2018-11-28 11:39:16,763 INFO L451 ceAbstractionStarter]: At program point L35(line 35) the Hoare annotation is: true [2018-11-28 11:39:16,763 INFO L451 ceAbstractionStarter]: At program point L34(line 34) the Hoare annotation is: true [2018-11-28 11:39:16,763 INFO L451 ceAbstractionStarter]: At program point multiplyENTRY(lines 3 11) the Hoare annotation is: true [2018-11-28 11:39:16,763 INFO L448 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2018-11-28 11:39:16,763 INFO L448 ceAbstractionStarter]: For program point multiplyEXIT(lines 3 11) no Hoare annotation was computed. [2018-11-28 11:39:16,763 INFO L448 ceAbstractionStarter]: For program point L10-1(line 10) no Hoare annotation was computed. [2018-11-28 11:39:16,764 INFO L448 ceAbstractionStarter]: For program point L10-3(lines 3 11) no Hoare annotation was computed. [2018-11-28 11:39:16,764 INFO L448 ceAbstractionStarter]: For program point multiplyErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2018-11-28 11:39:16,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:39:16 BoogieIcfgContainer [2018-11-28 11:39:16,767 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 11:39:16,767 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 11:39:16,767 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 11:39:16,767 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 11:39:16,768 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:39:15" (3/4) ... [2018-11-28 11:39:16,770 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 11:39:16,775 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cast [2018-11-28 11:39:16,775 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 11:39:16,776 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure divide [2018-11-28 11:39:16,776 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 11:39:16,776 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure multiply [2018-11-28 11:39:16,779 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-28 11:39:16,779 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-28 11:39:16,779 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 11:39:16,805 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_95c1737f-e1ad-4bd1-9aa4-ef4f028dafb9/bin-2019/uautomizer/witness.graphml [2018-11-28 11:39:16,805 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 11:39:16,806 INFO L168 Benchmark]: Toolchain (without parser) took 1445.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -126.0 MB). Peak memory consumption was 25.5 MB. Max. memory is 11.5 GB. [2018-11-28 11:39:16,807 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:39:16,807 INFO L168 Benchmark]: CACSL2BoogieTranslator took 177.29 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 11:39:16,807 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.69 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 11:39:16,808 INFO L168 Benchmark]: Boogie Preprocessor took 18.51 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:39:16,808 INFO L168 Benchmark]: RCFGBuilder took 238.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -195.8 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-28 11:39:16,808 INFO L168 Benchmark]: TraceAbstraction took 953.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 53.6 MB). Peak memory consumption was 53.6 MB. Max. memory is 11.5 GB. [2018-11-28 11:39:16,809 INFO L168 Benchmark]: Witness Printer took 38.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:39:16,810 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 177.29 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.69 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.51 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 238.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -195.8 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 953.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 53.6 MB). Peak memory consumption was 53.6 MB. Max. memory is 11.5 GB. * Witness Printer took 38.35 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: - PositiveResult [Line: 29]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 20]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 10]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 3 error locations. SAFE Result, 0.8s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 58 SDtfs, 4 SDslu, 53 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 13 NumberOfFragments, 9 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 755 SizeOfPredicates, 8 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...