./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1051_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b1ab34f1-7258-4faf-a9cd-de5fa446923a/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b1ab34f1-7258-4faf-a9cd-de5fa446923a/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b1ab34f1-7258-4faf-a9cd-de5fa446923a/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b1ab34f1-7258-4faf-a9cd-de5fa446923a/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1051_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b1ab34f1-7258-4faf-a9cd-de5fa446923a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b1ab34f1-7258-4faf-a9cd-de5fa446923a/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 0fa375491f6ee23468a1ede5cb9608fff6035ced ......................................................................................................................................................................................................................................................................................................................... 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_b1ab34f1-7258-4faf-a9cd-de5fa446923a/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b1ab34f1-7258-4faf-a9cd-de5fa446923a/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b1ab34f1-7258-4faf-a9cd-de5fa446923a/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b1ab34f1-7258-4faf-a9cd-de5fa446923a/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1051_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b1ab34f1-7258-4faf-a9cd-de5fa446923a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b1ab34f1-7258-4faf-a9cd-de5fa446923a/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 0fa375491f6ee23468a1ede5cb9608fff6035ced .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 19:12:55,584 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 19:12:55,585 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 19:12:55,591 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 19:12:55,591 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 19:12:55,592 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 19:12:55,592 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 19:12:55,593 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 19:12:55,594 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 19:12:55,594 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 19:12:55,595 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 19:12:55,595 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 19:12:55,595 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 19:12:55,596 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 19:12:55,597 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 19:12:55,597 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 19:12:55,597 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 19:12:55,598 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 19:12:55,599 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 19:12:55,600 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 19:12:55,600 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 19:12:55,601 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 19:12:55,602 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 19:12:55,602 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 19:12:55,602 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 19:12:55,603 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 19:12:55,603 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 19:12:55,604 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 19:12:55,604 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 19:12:55,605 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 19:12:55,605 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 19:12:55,605 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 19:12:55,605 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 19:12:55,605 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 19:12:55,606 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 19:12:55,606 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 19:12:55,606 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b1ab34f1-7258-4faf-a9cd-de5fa446923a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 19:12:55,613 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 19:12:55,613 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 19:12:55,614 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 19:12:55,614 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 19:12:55,614 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 19:12:55,614 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 19:12:55,614 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 19:12:55,615 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 19:12:55,615 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 19:12:55,615 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 19:12:55,615 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 19:12:55,615 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 19:12:55,615 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 19:12:55,616 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 19:12:55,616 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 19:12:55,616 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 19:12:55,616 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 19:12:55,616 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 19:12:55,616 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 19:12:55,616 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 19:12:55,616 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 19:12:55,617 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 19:12:55,617 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 19:12:55,617 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 19:12:55,617 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 19:12:55,617 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 19:12:55,617 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 19:12:55,617 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 19:12:55,617 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 19:12:55,618 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 19:12:55,618 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 19:12:55,618 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 19:12:55,618 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 19:12:55,618 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 19:12:55,618 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 19:12:55,618 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 19:12:55,618 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_b1ab34f1-7258-4faf-a9cd-de5fa446923a/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 -> 0fa375491f6ee23468a1ede5cb9608fff6035ced [2018-12-09 19:12:55,635 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 19:12:55,642 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 19:12:55,644 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 19:12:55,645 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 19:12:55,645 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 19:12:55,645 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b1ab34f1-7258-4faf-a9cd-de5fa446923a/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1051_true-unreach-call.c [2018-12-09 19:12:55,679 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b1ab34f1-7258-4faf-a9cd-de5fa446923a/bin-2019/utaipan/data/48fc7833a/622a61519b3a4e4897dc88d97c60479d/FLAG7ac82a5a2 [2018-12-09 19:12:56,067 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 19:12:56,067 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b1ab34f1-7258-4faf-a9cd-de5fa446923a/sv-benchmarks/c/float-newlib/double_req_bl_1051_true-unreach-call.c [2018-12-09 19:12:56,072 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b1ab34f1-7258-4faf-a9cd-de5fa446923a/bin-2019/utaipan/data/48fc7833a/622a61519b3a4e4897dc88d97c60479d/FLAG7ac82a5a2 [2018-12-09 19:12:56,084 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b1ab34f1-7258-4faf-a9cd-de5fa446923a/bin-2019/utaipan/data/48fc7833a/622a61519b3a4e4897dc88d97c60479d [2018-12-09 19:12:56,086 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 19:12:56,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 19:12:56,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 19:12:56,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 19:12:56,091 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 19:12:56,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:12:56" (1/1) ... [2018-12-09 19:12:56,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@651df91d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:56, skipping insertion in model container [2018-12-09 19:12:56,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:12:56" (1/1) ... [2018-12-09 19:12:56,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 19:12:56,115 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 19:12:56,217 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:12:56,219 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 19:12:56,237 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:12:56,249 INFO L195 MainTranslator]: Completed translation [2018-12-09 19:12:56,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:56 WrapperNode [2018-12-09 19:12:56,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 19:12:56,250 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 19:12:56,250 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 19:12:56,250 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 19:12:56,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:56" (1/1) ... [2018-12-09 19:12:56,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:56" (1/1) ... [2018-12-09 19:12:56,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 19:12:56,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 19:12:56,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 19:12:56,295 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 19:12:56,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:56" (1/1) ... [2018-12-09 19:12:56,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:56" (1/1) ... [2018-12-09 19:12:56,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:56" (1/1) ... [2018-12-09 19:12:56,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:56" (1/1) ... [2018-12-09 19:12:56,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:56" (1/1) ... [2018-12-09 19:12:56,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:56" (1/1) ... [2018-12-09 19:12:56,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:56" (1/1) ... [2018-12-09 19:12:56,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 19:12:56,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 19:12:56,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 19:12:56,319 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 19:12:56,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1ab34f1-7258-4faf-a9cd-de5fa446923a/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 [2018-12-09 19:12:56,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-12-09 19:12:56,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 19:12:56,351 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2018-12-09 19:12:56,351 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2018-12-09 19:12:56,351 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-12-09 19:12:56,351 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-12-09 19:12:56,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 19:12:56,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 19:12:56,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-09 19:12:56,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 19:12:56,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 19:12:56,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 19:12:56,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 19:12:56,352 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 19:12:56,352 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 19:12:56,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 19:12:56,505 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 19:12:56,505 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-09 19:12:56,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:12:56 BoogieIcfgContainer [2018-12-09 19:12:56,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 19:12:56,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 19:12:56,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 19:12:56,508 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 19:12:56,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:12:56" (1/3) ... [2018-12-09 19:12:56,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f8b56ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:12:56, skipping insertion in model container [2018-12-09 19:12:56,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:56" (2/3) ... [2018-12-09 19:12:56,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f8b56ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:12:56, skipping insertion in model container [2018-12-09 19:12:56,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:12:56" (3/3) ... [2018-12-09 19:12:56,510 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051_true-unreach-call.c [2018-12-09 19:12:56,516 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 19:12:56,520 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 19:12:56,529 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 19:12:56,549 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 19:12:56,549 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 19:12:56,549 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 19:12:56,549 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 19:12:56,549 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 19:12:56,549 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 19:12:56,549 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 19:12:56,549 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 19:12:56,559 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2018-12-09 19:12:56,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 19:12:56,563 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:12:56,563 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:12:56,565 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:12:56,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:12:56,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1635654302, now seen corresponding path program 1 times [2018-12-09 19:12:56,569 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:12:56,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:12:56,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:12:56,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:12:56,596 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:12:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:12:56,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:12:56,643 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:12:56,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 19:12:56,643 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:12:56,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 19:12:56,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 19:12:56,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 19:12:56,655 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2018-12-09 19:12:56,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:12:56,667 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2018-12-09 19:12:56,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 19:12:56,668 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2018-12-09 19:12:56,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:12:56,674 INFO L225 Difference]: With dead ends: 86 [2018-12-09 19:12:56,674 INFO L226 Difference]: Without dead ends: 43 [2018-12-09 19:12:56,676 INFO L631 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 [2018-12-09 19:12:56,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-09 19:12:56,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-09 19:12:56,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-09 19:12:56,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2018-12-09 19:12:56,699 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2018-12-09 19:12:56,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:12:56,699 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2018-12-09 19:12:56,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 19:12:56,699 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2018-12-09 19:12:56,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-09 19:12:56,700 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:12:56,700 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:12:56,700 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:12:56,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:12:56,700 INFO L82 PathProgramCache]: Analyzing trace with hash 744784661, now seen corresponding path program 1 times [2018-12-09 19:12:56,700 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:12:56,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:12:56,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:12:56,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:12:56,702 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:12:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 19:12:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 19:12:56,751 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 19:12:56,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:12:56 BoogieIcfgContainer [2018-12-09 19:12:56,769 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 19:12:56,769 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 19:12:56,769 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 19:12:56,770 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 19:12:56,770 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:12:56" (3/4) ... [2018-12-09 19:12:56,772 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 19:12:56,772 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 19:12:56,773 INFO L168 Benchmark]: Toolchain (without parser) took 686.02 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.8 MB). Free memory was 957.7 MB in the beginning and 1.0 GB in the end (delta: -81.6 MB). Peak memory consumption was 10.1 MB. Max. memory is 11.5 GB. [2018-12-09 19:12:56,773 INFO L168 Benchmark]: CDTParser took 0.11 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. [2018-12-09 19:12:56,774 INFO L168 Benchmark]: CACSL2BoogieTranslator took 161.81 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 947.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 19:12:56,774 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.44 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.8 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -148.0 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2018-12-09 19:12:56,775 INFO L168 Benchmark]: Boogie Preprocessor took 23.93 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-09 19:12:56,775 INFO L168 Benchmark]: RCFGBuilder took 186.70 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2018-12-09 19:12:56,775 INFO L168 Benchmark]: TraceAbstraction took 263.16 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. [2018-12-09 19:12:56,776 INFO L168 Benchmark]: Witness Printer took 2.80 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:12:56,778 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 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 161.81 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 947.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.44 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.8 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -148.0 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.93 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 186.70 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 263.16 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. * Witness Printer took 2.80 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 93]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 37, overapproximation of bitwiseOr at line 38, overapproximation of someBinaryArithmeticDOUBLEoperation at line 88, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 80. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; VAL [\old(huge_floor)=6442450948, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L88] double x = 0.0 / 0.0; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L89] CALL, EXPR floor_double(x) VAL [\old(x)=6442450952, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; VAL [\old(x)=6442450952, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=6442450952] [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [\old(x)=6442450952, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-2147483648, i1=3, x=6442450952] [L26] COND TRUE j0 < 20 VAL [\old(x)=6442450952, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-2147483648, i1=3, j0=0, x=6442450952] [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 VAL [\old(x)=6442450952, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-2147483648, i1=3, j0=0, x=6442450952] [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; VAL [\old(x)=6442450952, \result=6442450952, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-2147483648, i1=3, j0=0, x=6442450952] [L89] RET, EXPR floor_double(x) VAL [floor_double(x)=6442450952, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=6442450952] [L89] double res = floor_double(x); [L92] CALL, EXPR isnan_double(res) VAL [\old(x)=6442450952, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L80] return x != x; VAL [\old(x)=6442450952, \result=0, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=6442450952] [L92] RET, EXPR isnan_double(res) VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, isnan_double(res)=0, res=6442450952, x=6442450952] [L92] COND TRUE !isnan_double(res) [L93] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=6442450952, x=6442450952] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 61 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=47occurred 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, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 484 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 0.1.23-635dfa2 [2018-12-09 19:12:58,083 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 19:12:58,085 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 19:12:58,093 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 19:12:58,094 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 19:12:58,094 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 19:12:58,095 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 19:12:58,096 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 19:12:58,097 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 19:12:58,098 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 19:12:58,099 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 19:12:58,099 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 19:12:58,100 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 19:12:58,100 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 19:12:58,101 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 19:12:58,102 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 19:12:58,102 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 19:12:58,104 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 19:12:58,105 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 19:12:58,106 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 19:12:58,107 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 19:12:58,107 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 19:12:58,109 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 19:12:58,109 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 19:12:58,109 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 19:12:58,110 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 19:12:58,110 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 19:12:58,111 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 19:12:58,111 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 19:12:58,112 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 19:12:58,112 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 19:12:58,113 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 19:12:58,113 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 19:12:58,113 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 19:12:58,114 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 19:12:58,114 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 19:12:58,114 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b1ab34f1-7258-4faf-a9cd-de5fa446923a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-09 19:12:58,123 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 19:12:58,123 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 19:12:58,124 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 19:12:58,124 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 19:12:58,124 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 19:12:58,124 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 19:12:58,124 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 19:12:58,124 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 19:12:58,125 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 19:12:58,125 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 19:12:58,125 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 19:12:58,125 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 19:12:58,125 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 19:12:58,126 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 19:12:58,126 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 19:12:58,126 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 19:12:58,126 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 19:12:58,126 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 19:12:58,126 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 19:12:58,126 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 19:12:58,126 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 19:12:58,127 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 19:12:58,127 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 19:12:58,127 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 19:12:58,127 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 19:12:58,127 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 19:12:58,127 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 19:12:58,127 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 19:12:58,128 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 19:12:58,128 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 19:12:58,128 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 19:12:58,128 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-09 19:12:58,128 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 19:12:58,128 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 19:12:58,128 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 19:12:58,128 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_b1ab34f1-7258-4faf-a9cd-de5fa446923a/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 -> 0fa375491f6ee23468a1ede5cb9608fff6035ced [2018-12-09 19:12:58,147 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 19:12:58,157 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 19:12:58,160 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 19:12:58,161 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 19:12:58,161 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 19:12:58,162 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b1ab34f1-7258-4faf-a9cd-de5fa446923a/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1051_true-unreach-call.c [2018-12-09 19:12:58,199 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b1ab34f1-7258-4faf-a9cd-de5fa446923a/bin-2019/utaipan/data/5c38ee345/c461e947784342e29a3c2daebdb7b8b3/FLAGbabc2b63c [2018-12-09 19:12:58,613 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 19:12:58,613 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b1ab34f1-7258-4faf-a9cd-de5fa446923a/sv-benchmarks/c/float-newlib/double_req_bl_1051_true-unreach-call.c [2018-12-09 19:12:58,617 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b1ab34f1-7258-4faf-a9cd-de5fa446923a/bin-2019/utaipan/data/5c38ee345/c461e947784342e29a3c2daebdb7b8b3/FLAGbabc2b63c [2018-12-09 19:12:58,625 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b1ab34f1-7258-4faf-a9cd-de5fa446923a/bin-2019/utaipan/data/5c38ee345/c461e947784342e29a3c2daebdb7b8b3 [2018-12-09 19:12:58,627 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 19:12:58,628 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 19:12:58,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 19:12:58,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 19:12:58,630 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 19:12:58,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:12:58" (1/1) ... [2018-12-09 19:12:58,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cdf94f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:58, skipping insertion in model container [2018-12-09 19:12:58,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:12:58" (1/1) ... [2018-12-09 19:12:58,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 19:12:58,647 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 19:12:58,742 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:12:58,745 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 19:12:58,763 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:12:58,780 INFO L195 MainTranslator]: Completed translation [2018-12-09 19:12:58,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:58 WrapperNode [2018-12-09 19:12:58,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 19:12:58,781 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 19:12:58,781 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 19:12:58,781 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 19:12:58,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:58" (1/1) ... [2018-12-09 19:12:58,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:58" (1/1) ... [2018-12-09 19:12:58,797 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 19:12:58,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 19:12:58,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 19:12:58,797 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 19:12:58,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:58" (1/1) ... [2018-12-09 19:12:58,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:58" (1/1) ... [2018-12-09 19:12:58,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:58" (1/1) ... [2018-12-09 19:12:58,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:58" (1/1) ... [2018-12-09 19:12:58,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:58" (1/1) ... [2018-12-09 19:12:58,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:58" (1/1) ... [2018-12-09 19:12:58,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:58" (1/1) ... [2018-12-09 19:12:58,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 19:12:58,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 19:12:58,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 19:12:58,859 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 19:12:58,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1ab34f1-7258-4faf-a9cd-de5fa446923a/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 [2018-12-09 19:12:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2018-12-09 19:12:58,889 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2018-12-09 19:12:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-12-09 19:12:58,889 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-12-09 19:12:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-12-09 19:12:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 19:12:58,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 19:12:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 19:12:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-09 19:12:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-12-09 19:12:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 19:12:58,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 19:12:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 19:12:58,890 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 19:12:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-09 19:12:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 19:12:58,998 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:12:59,861 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 19:12:59,861 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-09 19:12:59,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:12:59 BoogieIcfgContainer [2018-12-09 19:12:59,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 19:12:59,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 19:12:59,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 19:12:59,864 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 19:12:59,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:12:58" (1/3) ... [2018-12-09 19:12:59,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c25341e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:12:59, skipping insertion in model container [2018-12-09 19:12:59,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:58" (2/3) ... [2018-12-09 19:12:59,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c25341e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:12:59, skipping insertion in model container [2018-12-09 19:12:59,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:12:59" (3/3) ... [2018-12-09 19:12:59,866 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051_true-unreach-call.c [2018-12-09 19:12:59,871 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 19:12:59,876 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 19:12:59,885 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 19:12:59,905 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 19:12:59,905 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 19:12:59,905 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 19:12:59,905 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 19:12:59,905 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 19:12:59,905 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 19:12:59,906 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 19:12:59,906 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 19:12:59,906 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 19:12:59,915 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-12-09 19:12:59,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-09 19:12:59,919 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:12:59,920 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:12:59,921 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:12:59,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:12:59,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1623509953, now seen corresponding path program 1 times [2018-12-09 19:12:59,926 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 19:12:59,927 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1ab34f1-7258-4faf-a9cd-de5fa446923a/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 [2018-12-09 19:12:59,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:12:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:12:59,973 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:12:59,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:12:59,984 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 19:12:59,992 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:12:59,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 19:12:59,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 19:13:00,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 19:13:00,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 19:13:00,002 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 2 states. [2018-12-09 19:13:00,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:13:00,014 INFO L93 Difference]: Finished difference Result 84 states and 122 transitions. [2018-12-09 19:13:00,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 19:13:00,015 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-12-09 19:13:00,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:13:00,021 INFO L225 Difference]: With dead ends: 84 [2018-12-09 19:13:00,022 INFO L226 Difference]: Without dead ends: 42 [2018-12-09 19:13:00,023 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 19:13:00,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-09 19:13:00,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-12-09 19:13:00,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-12-09 19:13:00,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 56 transitions. [2018-12-09 19:13:00,046 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 56 transitions. Word has length 22 [2018-12-09 19:13:00,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:13:00,046 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 56 transitions. [2018-12-09 19:13:00,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 19:13:00,047 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 56 transitions. [2018-12-09 19:13:00,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 19:13:00,047 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:13:00,047 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:13:00,047 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:13:00,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:13:00,048 INFO L82 PathProgramCache]: Analyzing trace with hash 510037476, now seen corresponding path program 1 times [2018-12-09 19:13:00,048 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 19:13:00,048 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1ab34f1-7258-4faf-a9cd-de5fa446923a/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-12-09 19:13:00,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:13:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:13:00,091 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:13:00,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:13:00,212 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 19:13:00,218 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:13:00,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-09 19:13:00,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 19:13:00,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 19:13:00,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-09 19:13:00,220 INFO L87 Difference]: Start difference. First operand 42 states and 56 transitions. Second operand 9 states. [2018-12-09 19:13:01,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:13:01,636 INFO L93 Difference]: Finished difference Result 51 states and 65 transitions. [2018-12-09 19:13:01,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 19:13:01,637 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2018-12-09 19:13:01,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:13:01,638 INFO L225 Difference]: With dead ends: 51 [2018-12-09 19:13:01,638 INFO L226 Difference]: Without dead ends: 44 [2018-12-09 19:13:01,639 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-12-09 19:13:01,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-09 19:13:01,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2018-12-09 19:13:01,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-12-09 19:13:01,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2018-12-09 19:13:01,645 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 23 [2018-12-09 19:13:01,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:13:01,645 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2018-12-09 19:13:01,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 19:13:01,645 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2018-12-09 19:13:01,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 19:13:01,646 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:13:01,646 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:13:01,646 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:13:01,646 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:13:01,646 INFO L82 PathProgramCache]: Analyzing trace with hash 600907611, now seen corresponding path program 1 times [2018-12-09 19:13:01,647 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 19:13:01,647 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1ab34f1-7258-4faf-a9cd-de5fa446923a/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-12-09 19:13:01,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:13:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:13:01,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:13:02,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:13:02,458 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 19:13:02,466 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:13:02,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-09 19:13:02,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 19:13:02,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 19:13:02,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-09 19:13:02,468 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand 9 states. [2018-12-09 19:13:04,075 WARN L180 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-12-09 19:13:05,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:13:05,397 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2018-12-09 19:13:05,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 19:13:05,398 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2018-12-09 19:13:05,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:13:05,399 INFO L225 Difference]: With dead ends: 49 [2018-12-09 19:13:05,399 INFO L226 Difference]: Without dead ends: 41 [2018-12-09 19:13:05,399 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-12-09 19:13:05,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-09 19:13:05,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-09 19:13:05,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-09 19:13:05,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2018-12-09 19:13:05,402 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 23 [2018-12-09 19:13:05,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:13:05,402 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2018-12-09 19:13:05,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 19:13:05,402 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2018-12-09 19:13:05,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 19:13:05,403 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:13:05,403 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:13:05,403 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:13:05,403 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:13:05,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1506102432, now seen corresponding path program 1 times [2018-12-09 19:13:05,404 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 19:13:05,404 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1ab34f1-7258-4faf-a9cd-de5fa446923a/bin-2019/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-12-09 19:13:05,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:13:05,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:13:05,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:13:05,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:13:05,608 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 19:13:05,616 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:13:05,617 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 19:13:05,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 19:13:05,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 19:13:05,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-09 19:13:05,617 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand 7 states. [2018-12-09 19:13:07,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:13:07,610 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2018-12-09 19:13:07,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-09 19:13:07,611 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2018-12-09 19:13:07,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:13:07,612 INFO L225 Difference]: With dead ends: 67 [2018-12-09 19:13:07,612 INFO L226 Difference]: Without dead ends: 40 [2018-12-09 19:13:07,612 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2018-12-09 19:13:07,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-09 19:13:07,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2018-12-09 19:13:07,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 19:13:07,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2018-12-09 19:13:07,615 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 26 [2018-12-09 19:13:07,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:13:07,615 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2018-12-09 19:13:07,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 19:13:07,615 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2018-12-09 19:13:07,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-09 19:13:07,616 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:13:07,616 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:13:07,616 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:13:07,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:13:07,616 INFO L82 PathProgramCache]: Analyzing trace with hash -2012573455, now seen corresponding path program 1 times [2018-12-09 19:13:07,616 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 19:13:07,616 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1ab34f1-7258-4faf-a9cd-de5fa446923a/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 [2018-12-09 19:13:07,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:13:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:13:07,727 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:13:07,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:13:07,872 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 19:13:07,881 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:13:07,881 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 19:13:07,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 19:13:07,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 19:13:07,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-12-09 19:13:07,882 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 8 states. [2018-12-09 19:13:08,292 WARN L180 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2018-12-09 19:13:09,036 WARN L180 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2018-12-09 19:13:09,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:13:09,146 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2018-12-09 19:13:09,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-09 19:13:09,146 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2018-12-09 19:13:09,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:13:09,146 INFO L225 Difference]: With dead ends: 40 [2018-12-09 19:13:09,146 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 19:13:09,147 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2018-12-09 19:13:09,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 19:13:09,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 19:13:09,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 19:13:09,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 19:13:09,147 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-12-09 19:13:09,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:13:09,147 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 19:13:09,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 19:13:09,148 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 19:13:09,148 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 19:13:09,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 19:13:09,206 INFO L448 ceAbstractionStarter]: For program point L31(lines 31 34) no Hoare annotation was computed. [2018-12-09 19:13:09,206 INFO L448 ceAbstractionStarter]: For program point L27(lines 27 46) no Hoare annotation was computed. [2018-12-09 19:13:09,206 INFO L448 ceAbstractionStarter]: For program point L56(lines 56 68) no Hoare annotation was computed. [2018-12-09 19:13:09,206 INFO L448 ceAbstractionStarter]: For program point L19-1(lines 19 24) no Hoare annotation was computed. [2018-12-09 19:13:09,206 INFO L444 ceAbstractionStarter]: At program point L19-2(lines 19 24) the Hoare annotation is: (= floor_double_~x |floor_double_#in~x|) [2018-12-09 19:13:09,207 INFO L448 ceAbstractionStarter]: For program point L19-3(lines 19 24) no Hoare annotation was computed. [2018-12-09 19:13:09,207 INFO L448 ceAbstractionStarter]: For program point L48(lines 48 51) no Hoare annotation was computed. [2018-12-09 19:13:09,207 INFO L448 ceAbstractionStarter]: For program point floor_doubleFINAL(lines 16 77) no Hoare annotation was computed. [2018-12-09 19:13:09,207 INFO L448 ceAbstractionStarter]: For program point L40(lines 40 45) no Hoare annotation was computed. [2018-12-09 19:13:09,207 INFO L448 ceAbstractionStarter]: For program point L28(lines 28 35) no Hoare annotation was computed. [2018-12-09 19:13:09,207 INFO L448 ceAbstractionStarter]: For program point L57(lines 57 66) no Hoare annotation was computed. [2018-12-09 19:13:09,207 INFO L448 ceAbstractionStarter]: For program point L57-1(lines 57 66) no Hoare annotation was computed. [2018-12-09 19:13:09,207 INFO L448 ceAbstractionStarter]: For program point floor_doubleEXIT(lines 16 77) no Hoare annotation was computed. [2018-12-09 19:13:09,207 INFO L451 ceAbstractionStarter]: At program point floor_doubleENTRY(lines 16 77) the Hoare annotation is: true [2018-12-09 19:13:09,207 INFO L448 ceAbstractionStarter]: For program point L41(lines 41 42) no Hoare annotation was computed. [2018-12-09 19:13:09,207 INFO L448 ceAbstractionStarter]: For program point L41-2(lines 41 42) no Hoare annotation was computed. [2018-12-09 19:13:09,207 INFO L448 ceAbstractionStarter]: For program point L70(lines 70 75) no Hoare annotation was computed. [2018-12-09 19:13:09,207 INFO L448 ceAbstractionStarter]: For program point L70-1(lines 16 77) no Hoare annotation was computed. [2018-12-09 19:13:09,207 INFO L448 ceAbstractionStarter]: For program point L70-2(lines 70 75) no Hoare annotation was computed. [2018-12-09 19:13:09,207 INFO L448 ceAbstractionStarter]: For program point L62(lines 62 63) no Hoare annotation was computed. [2018-12-09 19:13:09,207 INFO L448 ceAbstractionStarter]: For program point L29(lines 29 34) no Hoare annotation was computed. [2018-12-09 19:13:09,207 INFO L448 ceAbstractionStarter]: For program point L62-2(lines 62 63) no Hoare annotation was computed. [2018-12-09 19:13:09,207 INFO L448 ceAbstractionStarter]: For program point L58(lines 58 65) no Hoare annotation was computed. [2018-12-09 19:13:09,208 INFO L448 ceAbstractionStarter]: For program point L54(lines 54 55) no Hoare annotation was computed. [2018-12-09 19:13:09,208 INFO L448 ceAbstractionStarter]: For program point L38(lines 38 39) no Hoare annotation was computed. [2018-12-09 19:13:09,208 INFO L448 ceAbstractionStarter]: For program point L26(lines 26 69) no Hoare annotation was computed. [2018-12-09 19:13:09,208 INFO L448 ceAbstractionStarter]: For program point L47(lines 47 69) no Hoare annotation was computed. [2018-12-09 19:13:09,208 INFO L451 ceAbstractionStarter]: At program point isnan_doubleENTRY(line 80) the Hoare annotation is: true [2018-12-09 19:13:09,208 INFO L448 ceAbstractionStarter]: For program point isnan_doubleEXIT(line 80) no Hoare annotation was computed. [2018-12-09 19:13:09,208 INFO L448 ceAbstractionStarter]: For program point isnan_doubleFINAL(line 80) no Hoare annotation was computed. [2018-12-09 19:13:09,208 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-09 19:13:09,208 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-09 19:13:09,208 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 19:13:09,208 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 19:13:09,208 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 19:13:09,208 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 19:13:09,208 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 19:13:09,208 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 93) no Hoare annotation was computed. [2018-12-09 19:13:09,208 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 82 98) the Hoare annotation is: true [2018-12-09 19:13:09,208 INFO L448 ceAbstractionStarter]: For program point L93(line 93) no Hoare annotation was computed. [2018-12-09 19:13:09,208 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 82 98) no Hoare annotation was computed. [2018-12-09 19:13:09,209 INFO L444 ceAbstractionStarter]: At program point L92(line 92) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53)))) (and (= main_~x~0 .cse0) (= main_~res~0 .cse0))) [2018-12-09 19:13:09,209 INFO L448 ceAbstractionStarter]: For program point L92-1(lines 92 95) no Hoare annotation was computed. [2018-12-09 19:13:09,209 INFO L444 ceAbstractionStarter]: At program point L89(line 89) the Hoare annotation is: (= main_~x~0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53))) [2018-12-09 19:13:09,209 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 82 98) no Hoare annotation was computed. [2018-12-09 19:13:09,209 INFO L448 ceAbstractionStarter]: For program point L89-1(line 89) no Hoare annotation was computed. [2018-12-09 19:13:09,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:13:09 BoogieIcfgContainer [2018-12-09 19:13:09,216 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 19:13:09,216 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 19:13:09,216 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 19:13:09,217 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 19:13:09,217 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:12:59" (3/4) ... [2018-12-09 19:13:09,219 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 19:13:09,223 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure floor_double [2018-12-09 19:13:09,223 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_double [2018-12-09 19:13:09,223 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 19:13:09,223 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 19:13:09,226 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2018-12-09 19:13:09,226 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-12-09 19:13:09,226 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 19:13:09,242 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x == \old(x) [2018-12-09 19:13:09,258 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b1ab34f1-7258-4faf-a9cd-de5fa446923a/bin-2019/utaipan/witness.graphml [2018-12-09 19:13:09,259 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 19:13:09,259 INFO L168 Benchmark]: Toolchain (without parser) took 10631.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 944.7 MB in the beginning and 863.9 MB in the end (delta: 80.8 MB). Peak memory consumption was 226.6 MB. Max. memory is 11.5 GB. [2018-12-09 19:13:09,259 INFO L168 Benchmark]: CDTParser took 0.16 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. [2018-12-09 19:13:09,260 INFO L168 Benchmark]: CACSL2BoogieTranslator took 152.64 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 927.3 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. [2018-12-09 19:13:09,260 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.96 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. [2018-12-09 19:13:09,260 INFO L168 Benchmark]: Boogie Preprocessor took 61.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -206.6 MB). Peak memory consumption was 13.8 MB. Max. memory is 11.5 GB. [2018-12-09 19:13:09,260 INFO L168 Benchmark]: RCFGBuilder took 1002.87 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: 33.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 11.5 GB. [2018-12-09 19:13:09,260 INFO L168 Benchmark]: TraceAbstraction took 9354.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 870.7 MB in the end (delta: 229.6 MB). Peak memory consumption was 229.6 MB. Max. memory is 11.5 GB. [2018-12-09 19:13:09,260 INFO L168 Benchmark]: Witness Printer took 42.20 ms. Allocated memory is still 1.2 GB. Free memory was 870.7 MB in the beginning and 863.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-12-09 19:13:09,262 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 152.64 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 927.3 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.96 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. * Boogie Preprocessor took 61.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -206.6 MB). Peak memory consumption was 13.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1002.87 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: 33.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9354.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 870.7 MB in the end (delta: 229.6 MB). Peak memory consumption was 229.6 MB. Max. memory is 11.5 GB. * Witness Printer took 42.20 ms. Allocated memory is still 1.2 GB. Free memory was 870.7 MB in the beginning and 863.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 93]: 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: 19]: Loop Invariant Derived loop invariant: x == \old(x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 46 locations, 1 error locations. SAFE Result, 9.3s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 7.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 186 SDtfs, 249 SDslu, 649 SDs, 0 SdLazy, 326 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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, 5 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 13 PreInvPairs, 16 NumberOfFragments, 28 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 20 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 116 ConstructedInterpolants, 21 QuantifiedInterpolants, 18833 SizeOfPredicates, 16 NumberOfNonLiveVariables, 333 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...