./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1032c_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1032c_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/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 8f0f6d97fc2d864b12fa51362458c8047d27a6c8 .......................................................................................................................................................................................................................................................................................................................................... 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_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1032c_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/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 8f0f6d97fc2d864b12fa51362458c8047d27a6c8 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 09:53:00,532 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 09:53:00,533 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 09:53:00,539 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 09:53:00,539 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 09:53:00,540 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 09:53:00,541 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 09:53:00,542 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 09:53:00,543 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 09:53:00,543 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 09:53:00,544 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 09:53:00,544 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 09:53:00,545 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 09:53:00,545 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 09:53:00,546 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 09:53:00,547 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 09:53:00,547 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 09:53:00,548 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 09:53:00,550 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 09:53:00,551 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 09:53:00,551 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 09:53:00,552 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 09:53:00,554 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 09:53:00,554 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 09:53:00,554 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 09:53:00,555 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 09:53:00,555 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 09:53:00,556 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 09:53:00,556 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 09:53:00,557 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 09:53:00,557 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 09:53:00,558 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 09:53:00,558 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 09:53:00,558 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 09:53:00,559 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 09:53:00,559 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 09:53:00,559 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 09:53:00,566 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 09:53:00,567 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 09:53:00,567 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 09:53:00,567 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 09:53:00,568 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 09:53:00,568 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 09:53:00,568 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 09:53:00,568 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 09:53:00,568 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 09:53:00,568 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 09:53:00,568 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 09:53:00,568 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 09:53:00,569 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 09:53:00,569 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 09:53:00,569 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 09:53:00,569 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 09:53:00,570 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 09:53:00,570 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 09:53:00,570 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 09:53:00,570 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 09:53:00,570 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 09:53:00,570 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 09:53:00,570 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 09:53:00,570 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 09:53:00,571 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 09:53:00,571 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 09:53:00,571 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 09:53:00,571 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 09:53:00,571 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 09:53:00,571 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 09:53:00,571 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 09:53:00,572 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 09:53:00,572 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 09:53:00,572 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 09:53:00,572 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 09:53:00,572 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 09:53:00,572 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 09:53:00,572 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_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/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 -> 8f0f6d97fc2d864b12fa51362458c8047d27a6c8 [2018-11-18 09:53:00,596 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 09:53:00,605 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 09:53:00,607 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 09:53:00,609 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 09:53:00,609 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 09:53:00,610 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1032c_true-unreach-call.c [2018-11-18 09:53:00,654 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/bin-2019/utaipan/data/ee2d44651/74f4ec70cd6f4f82a6f47bfae96d3148/FLAGc1dc68133 [2018-11-18 09:53:01,061 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 09:53:01,061 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/sv-benchmarks/c/float-newlib/double_req_bl_1032c_true-unreach-call.c [2018-11-18 09:53:01,066 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/bin-2019/utaipan/data/ee2d44651/74f4ec70cd6f4f82a6f47bfae96d3148/FLAGc1dc68133 [2018-11-18 09:53:01,076 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/bin-2019/utaipan/data/ee2d44651/74f4ec70cd6f4f82a6f47bfae96d3148 [2018-11-18 09:53:01,078 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 09:53:01,079 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 09:53:01,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 09:53:01,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 09:53:01,083 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 09:53:01,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:53:01" (1/1) ... [2018-11-18 09:53:01,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6968a0c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:53:01, skipping insertion in model container [2018-11-18 09:53:01,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:53:01" (1/1) ... [2018-11-18 09:53:01,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 09:53:01,112 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 09:53:01,234 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:53:01,236 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 09:53:01,255 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:53:01,267 INFO L195 MainTranslator]: Completed translation [2018-11-18 09:53:01,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:53:01 WrapperNode [2018-11-18 09:53:01,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 09:53:01,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 09:53:01,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 09:53:01,268 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 09:53:01,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:53:01" (1/1) ... [2018-11-18 09:53:01,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:53:01" (1/1) ... [2018-11-18 09:53:01,284 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 09:53:01,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 09:53:01,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 09:53:01,284 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 09:53:01,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:53:01" (1/1) ... [2018-11-18 09:53:01,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:53:01" (1/1) ... [2018-11-18 09:53:01,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:53:01" (1/1) ... [2018-11-18 09:53:01,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:53:01" (1/1) ... [2018-11-18 09:53:01,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:53:01" (1/1) ... [2018-11-18 09:53:01,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:53:01" (1/1) ... [2018-11-18 09:53:01,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:53:01" (1/1) ... [2018-11-18 09:53:01,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 09:53:01,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 09:53:01,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 09:53:01,344 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 09:53:01,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:53:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 09:53:01,376 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2018-11-18 09:53:01,376 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2018-11-18 09:53:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 09:53:01,377 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 09:53:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-18 09:53:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 09:53:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 09:53:01,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 09:53:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-18 09:53:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 09:53:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2018-11-18 09:53:01,378 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2018-11-18 09:53:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 09:53:01,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 09:53:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 09:53:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 09:53:01,567 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 09:53:01,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:53:01 BoogieIcfgContainer [2018-11-18 09:53:01,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 09:53:01,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 09:53:01,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 09:53:01,572 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 09:53:01,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:53:01" (1/3) ... [2018-11-18 09:53:01,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e167ebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:53:01, skipping insertion in model container [2018-11-18 09:53:01,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:53:01" (2/3) ... [2018-11-18 09:53:01,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e167ebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:53:01, skipping insertion in model container [2018-11-18 09:53:01,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:53:01" (3/3) ... [2018-11-18 09:53:01,575 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032c_true-unreach-call.c [2018-11-18 09:53:01,582 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 09:53:01,589 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 09:53:01,602 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 09:53:01,624 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 09:53:01,625 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 09:53:01,625 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 09:53:01,625 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 09:53:01,625 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 09:53:01,625 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 09:53:01,625 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 09:53:01,625 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 09:53:01,635 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-11-18 09:53:01,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 09:53:01,639 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:53:01,639 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:53:01,641 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:53:01,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:53:01,645 INFO L82 PathProgramCache]: Analyzing trace with hash 2016604367, now seen corresponding path program 1 times [2018-11-18 09:53:01,647 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 09:53:01,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:53:01,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:53:01,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:53:01,676 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 09:53:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:53:01,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:53:01,743 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:53:01,743 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 09:53:01,743 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 09:53:01,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 09:53:01,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 09:53:01,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 09:53:01,757 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-11-18 09:53:01,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:53:01,770 INFO L93 Difference]: Finished difference Result 76 states and 105 transitions. [2018-11-18 09:53:01,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 09:53:01,771 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2018-11-18 09:53:01,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:53:01,777 INFO L225 Difference]: With dead ends: 76 [2018-11-18 09:53:01,777 INFO L226 Difference]: Without dead ends: 38 [2018-11-18 09:53:01,779 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 09:53:01,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-18 09:53:01,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-11-18 09:53:01,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-18 09:53:01,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2018-11-18 09:53:01,801 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 25 [2018-11-18 09:53:01,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:53:01,802 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2018-11-18 09:53:01,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 09:53:01,802 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2018-11-18 09:53:01,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 09:53:01,802 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:53:01,802 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:53:01,803 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:53:01,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:53:01,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1647943439, now seen corresponding path program 1 times [2018-11-18 09:53:01,803 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 09:53:01,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:53:01,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:53:01,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:53:01,805 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 09:53:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:53:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:53:01,910 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 09:53:01,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 09:53:01 BoogieIcfgContainer [2018-11-18 09:53:01,931 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 09:53:01,932 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 09:53:01,932 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 09:53:01,932 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 09:53:01,932 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:53:01" (3/4) ... [2018-11-18 09:53:01,934 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 09:53:01,935 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 09:53:01,935 INFO L168 Benchmark]: Toolchain (without parser) took 856.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 959.2 MB in the beginning and 1.1 GB in the end (delta: -120.3 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. [2018-11-18 09:53:01,936 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:53:01,937 INFO L168 Benchmark]: CACSL2BoogieTranslator took 187.82 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 945.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-18 09:53:01,937 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.85 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:53:01,937 INFO L168 Benchmark]: Boogie Preprocessor took 60.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -186.8 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. [2018-11-18 09:53:01,938 INFO L168 Benchmark]: RCFGBuilder took 223.74 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2018-11-18 09:53:01,938 INFO L168 Benchmark]: TraceAbstraction took 363.03 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: 30.6 MB). Peak memory consumption was 30.6 MB. Max. memory is 11.5 GB. [2018-11-18 09:53:01,939 INFO L168 Benchmark]: Witness Printer took 2.88 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:53:01,940 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 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 187.82 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 945.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.85 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 60.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -186.8 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 223.74 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 363.03 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: 30.6 MB). Peak memory consumption was 30.6 MB. Max. memory is 11.5 GB. * Witness Printer took 2.88 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 91]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 31, overapproximation of bitwiseOr at line 73, overapproximation of someBinaryArithmeticDOUBLEoperation at line 86, overapproximation of bitwiseAnd at line 72. Possible FailurePath: [L86] double x = 1.0 / 0.0; [L87] CALL, EXPR round_double(x) VAL [\old(x)=2147483651] [L15] __int32_t msw, exponent_less_1023; [L16] __uint32_t lsw; VAL [\old(x)=2147483651, x=2147483651] [L18] FCALL ieee_double_shape_type ew_u; [L19] FCALL ew_u.value = (x) [L20] EXPR, FCALL ew_u.parts.msw [L20] (msw) = ew_u.parts.msw [L21] EXPR, FCALL ew_u.parts.lsw [L21] (lsw) = ew_u.parts.lsw [L22] COND FALSE !(0) VAL [\old(x)=2147483651, lsw=0, msw=2147483647, x=2147483651] [L23] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=2147483651, exponent_less_1023=0, lsw=0, msw=2147483647, x=2147483651] [L24] COND TRUE exponent_less_1023 < 20 VAL [\old(x)=2147483651, exponent_less_1023=0, lsw=0, msw=2147483647, x=2147483651] [L25] COND FALSE !(exponent_less_1023 < 0) [L31] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; VAL [\old(x)=2147483651, exponent_less_1023=0, lsw=0, msw=2147483647, x=2147483651] [L32] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L33] RET return x; VAL [\old(x)=2147483651, \result=2147483651, exponent_less_1023=0, lsw=0, msw=2147483647, x=2147483651] [L87] EXPR round_double(x) VAL [round_double(x)=2147483651, x=2147483651] [L87] double res = round_double(x); [L90] CALL, EXPR isinf_double(res) VAL [\old(x)=2147483651] [L65] __int32_t hx, lx; VAL [\old(x)=2147483651, x=2147483651] [L67] FCALL ieee_double_shape_type ew_u; [L68] FCALL ew_u.value = (x) [L69] EXPR, FCALL ew_u.parts.msw [L69] (hx) = ew_u.parts.msw [L70] EXPR, FCALL ew_u.parts.lsw [L70] (lx) = ew_u.parts.lsw [L71] COND FALSE !(0) VAL [\old(x)=2147483651, hx=2147483647, lx=-2147483648, x=2147483651] [L72] hx &= 0x7fffffff [L73] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L74] hx = 0x7ff00000 - hx [L75] RET return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [\old(x)=2147483651, \result=0, hx=2146435072, lx=-2147483648, x=2147483651] [L90] EXPR isinf_double(res) VAL [isinf_double(res)=0, res=2147483651, x=2147483651] [L90] COND TRUE !isinf_double(res) [L91] __VERIFIER_error() VAL [res=2147483651, x=2147483651] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 42 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 49 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=42occurred 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, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 576 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5842f4b [2018-11-18 09:53:03,362 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 09:53:03,363 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 09:53:03,370 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 09:53:03,370 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 09:53:03,371 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 09:53:03,371 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 09:53:03,373 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 09:53:03,374 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 09:53:03,374 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 09:53:03,375 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 09:53:03,375 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 09:53:03,376 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 09:53:03,377 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 09:53:03,378 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 09:53:03,378 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 09:53:03,379 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 09:53:03,380 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 09:53:03,382 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 09:53:03,383 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 09:53:03,384 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 09:53:03,384 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 09:53:03,386 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 09:53:03,387 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 09:53:03,387 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 09:53:03,387 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 09:53:03,388 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 09:53:03,389 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 09:53:03,390 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 09:53:03,391 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 09:53:03,391 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 09:53:03,391 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 09:53:03,391 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 09:53:03,391 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 09:53:03,392 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 09:53:03,392 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 09:53:03,392 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-18 09:53:03,403 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 09:53:03,403 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 09:53:03,404 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 09:53:03,404 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 09:53:03,404 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 09:53:03,404 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 09:53:03,404 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 09:53:03,404 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 09:53:03,405 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 09:53:03,405 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 09:53:03,405 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 09:53:03,405 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 09:53:03,405 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 09:53:03,405 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 09:53:03,406 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 09:53:03,406 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 09:53:03,406 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 09:53:03,406 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 09:53:03,406 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 09:53:03,406 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 09:53:03,406 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 09:53:03,406 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 09:53:03,407 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 09:53:03,407 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 09:53:03,407 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 09:53:03,407 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 09:53:03,407 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 09:53:03,407 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 09:53:03,407 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 09:53:03,407 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 09:53:03,408 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 09:53:03,408 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 09:53:03,408 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 09:53:03,408 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 09:53:03,408 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 09:53:03,408 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_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/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 -> 8f0f6d97fc2d864b12fa51362458c8047d27a6c8 [2018-11-18 09:53:03,436 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 09:53:03,444 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 09:53:03,446 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 09:53:03,447 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 09:53:03,447 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 09:53:03,447 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1032c_true-unreach-call.c [2018-11-18 09:53:03,481 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/bin-2019/utaipan/data/51db299df/599122713b434930b4250d225159c554/FLAGa3ad30f70 [2018-11-18 09:53:03,879 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 09:53:03,879 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/sv-benchmarks/c/float-newlib/double_req_bl_1032c_true-unreach-call.c [2018-11-18 09:53:03,884 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/bin-2019/utaipan/data/51db299df/599122713b434930b4250d225159c554/FLAGa3ad30f70 [2018-11-18 09:53:03,893 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/bin-2019/utaipan/data/51db299df/599122713b434930b4250d225159c554 [2018-11-18 09:53:03,895 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 09:53:03,896 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 09:53:03,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 09:53:03,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 09:53:03,899 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 09:53:03,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:53:03" (1/1) ... [2018-11-18 09:53:03,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26edcba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:53:03, skipping insertion in model container [2018-11-18 09:53:03,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:53:03" (1/1) ... [2018-11-18 09:53:03,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 09:53:03,921 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 09:53:04,043 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:53:04,047 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 09:53:04,069 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:53:04,086 INFO L195 MainTranslator]: Completed translation [2018-11-18 09:53:04,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:53:04 WrapperNode [2018-11-18 09:53:04,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 09:53:04,087 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 09:53:04,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 09:53:04,087 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 09:53:04,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:53:04" (1/1) ... [2018-11-18 09:53:04,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:53:04" (1/1) ... [2018-11-18 09:53:04,104 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 09:53:04,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 09:53:04,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 09:53:04,104 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 09:53:04,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:53:04" (1/1) ... [2018-11-18 09:53:04,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:53:04" (1/1) ... [2018-11-18 09:53:04,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:53:04" (1/1) ... [2018-11-18 09:53:04,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:53:04" (1/1) ... [2018-11-18 09:53:04,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:53:04" (1/1) ... [2018-11-18 09:53:04,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:53:04" (1/1) ... [2018-11-18 09:53:04,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:53:04" (1/1) ... [2018-11-18 09:53:04,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 09:53:04,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 09:53:04,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 09:53:04,185 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 09:53:04,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:53:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 09:53:04,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-11-18 09:53:04,220 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2018-11-18 09:53:04,220 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2018-11-18 09:53:04,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-11-18 09:53:04,220 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 09:53:04,220 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 09:53:04,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 09:53:04,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 09:53:04,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 09:53:04,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 09:53:04,221 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2018-11-18 09:53:04,221 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2018-11-18 09:53:04,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 09:53:04,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 09:53:04,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 09:53:04,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 09:53:04,336 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 09:53:04,391 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 09:53:04,586 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 09:53:04,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:53:04 BoogieIcfgContainer [2018-11-18 09:53:04,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 09:53:04,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 09:53:04,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 09:53:04,589 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 09:53:04,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:53:03" (1/3) ... [2018-11-18 09:53:04,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6545bfe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:53:04, skipping insertion in model container [2018-11-18 09:53:04,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:53:04" (2/3) ... [2018-11-18 09:53:04,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6545bfe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:53:04, skipping insertion in model container [2018-11-18 09:53:04,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:53:04" (3/3) ... [2018-11-18 09:53:04,592 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032c_true-unreach-call.c [2018-11-18 09:53:04,599 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 09:53:04,604 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 09:53:04,612 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 09:53:04,629 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 09:53:04,629 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 09:53:04,629 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 09:53:04,629 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 09:53:04,630 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 09:53:04,630 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 09:53:04,630 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 09:53:04,630 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 09:53:04,630 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 09:53:04,642 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-11-18 09:53:04,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 09:53:04,646 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:53:04,646 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:53:04,647 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:53:04,651 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:53:04,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1882261546, now seen corresponding path program 1 times [2018-11-18 09:53:04,653 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:53:04,654 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-18 09:53:04,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:53:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:53:04,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:53:04,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:53:04,719 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:53:04,729 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:53:04,730 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 09:53:04,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 09:53:04,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 09:53:04,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 09:53:04,740 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2018-11-18 09:53:04,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:53:04,758 INFO L93 Difference]: Finished difference Result 74 states and 103 transitions. [2018-11-18 09:53:04,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 09:53:04,759 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-11-18 09:53:04,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:53:04,766 INFO L225 Difference]: With dead ends: 74 [2018-11-18 09:53:04,766 INFO L226 Difference]: Without dead ends: 37 [2018-11-18 09:53:04,768 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 09:53:04,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-18 09:53:04,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-11-18 09:53:04,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-18 09:53:04,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2018-11-18 09:53:04,799 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 24 [2018-11-18 09:53:04,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:53:04,799 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2018-11-18 09:53:04,799 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 09:53:04,799 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2018-11-18 09:53:04,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 09:53:04,800 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:53:04,800 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:53:04,800 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:53:04,800 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:53:04,800 INFO L82 PathProgramCache]: Analyzing trace with hash 427374384, now seen corresponding path program 1 times [2018-11-18 09:53:04,801 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:53:04,801 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-18 09:53:04,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:53:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:53:04,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:53:04,946 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 09:53:04,947 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 09:53:04,951 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2018-11-18 09:53:05,009 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 24 [2018-11-18 09:53:05,009 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 09:53:05,024 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2018-11-18 09:53:05,033 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 4 [2018-11-18 09:53:05,033 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 09:53:05,037 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 09:53:05,041 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 09:53:05,060 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-18 09:53:05,060 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:46, output treesize:18 [2018-11-18 09:53:06,635 WARN L180 SmtUtils]: Spent 1.55 s on a formula simplification that was a NOOP. DAG size: 18 [2018-11-18 09:53:08,210 WARN L180 SmtUtils]: Spent 1.55 s on a formula simplification that was a NOOP. DAG size: 24 [2018-11-18 09:53:09,796 WARN L180 SmtUtils]: Spent 1.56 s on a formula simplification that was a NOOP. DAG size: 25 [2018-11-18 09:53:11,807 WARN L180 SmtUtils]: Spent 1.97 s on a formula simplification that was a NOOP. DAG size: 26 [2018-11-18 09:53:13,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:53:13,646 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:53:13,658 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:53:13,658 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-18 09:53:13,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 09:53:13,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 09:53:13,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=54, Unknown=1, NotChecked=0, Total=72 [2018-11-18 09:53:13,661 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 9 states. [2018-11-18 09:53:15,815 WARN L180 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 20 [2018-11-18 09:53:18,079 WARN L180 SmtUtils]: Spent 2.20 s on a formula simplification that was a NOOP. DAG size: 30 [2018-11-18 09:53:20,170 WARN L180 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 31 [2018-11-18 09:53:22,261 WARN L180 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 27 [2018-11-18 09:53:26,383 WARN L180 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2018-11-18 09:53:30,591 WARN L180 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2018-11-18 09:53:34,884 WARN L180 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2018-11-18 09:53:36,992 WARN L180 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 26 [2018-11-18 09:53:43,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:53:43,122 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2018-11-18 09:53:43,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-18 09:53:43,123 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-11-18 09:53:43,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:53:43,125 INFO L225 Difference]: With dead ends: 63 [2018-11-18 09:53:43,125 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 09:53:43,126 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 31.3s TimeCoverageRelationStatistics Valid=79, Invalid=192, Unknown=1, NotChecked=0, Total=272 [2018-11-18 09:53:43,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 09:53:43,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2018-11-18 09:53:43,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-18 09:53:43,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2018-11-18 09:53:43,130 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 26 [2018-11-18 09:53:43,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:53:43,131 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2018-11-18 09:53:43,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 09:53:43,131 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2018-11-18 09:53:43,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 09:53:43,132 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:53:43,132 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:53:43,132 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:53:43,132 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:53:43,132 INFO L82 PathProgramCache]: Analyzing trace with hash -393594045, now seen corresponding path program 1 times [2018-11-18 09:53:43,133 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:53:43,133 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-18 09:53:43,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:53:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:53:43,245 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:53:44,174 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 09:53:44,175 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 09:53:44,176 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2018-11-18 09:53:44,214 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 09:53:44,218 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2018-11-18 09:53:44,218 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 09:53:44,229 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2018-11-18 09:53:44,233 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 4 [2018-11-18 09:53:44,233 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 09:53:44,235 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 09:53:44,237 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 09:53:44,245 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 09:53:44,245 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:46, output treesize:18 [2018-11-18 09:53:44,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:53:44,712 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:53:44,724 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:53:44,724 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-11-18 09:53:44,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 09:53:44,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 09:53:44,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-11-18 09:53:44,725 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 11 states. [2018-11-18 09:53:45,776 WARN L180 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-18 09:53:47,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:53:47,625 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2018-11-18 09:53:47,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 09:53:47,626 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2018-11-18 09:53:47,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:53:47,627 INFO L225 Difference]: With dead ends: 42 [2018-11-18 09:53:47,627 INFO L226 Difference]: Without dead ends: 35 [2018-11-18 09:53:47,628 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2018-11-18 09:53:47,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-18 09:53:47,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-11-18 09:53:47,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-18 09:53:47,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2018-11-18 09:53:47,633 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 26 [2018-11-18 09:53:47,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:53:47,634 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2018-11-18 09:53:47,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 09:53:47,634 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2018-11-18 09:53:47,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 09:53:47,634 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:53:47,634 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:53:47,634 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:53:47,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:53:47,635 INFO L82 PathProgramCache]: Analyzing trace with hash -686997052, now seen corresponding path program 1 times [2018-11-18 09:53:47,635 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:53:47,635 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/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 [2018-11-18 09:53:47,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:53:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:53:47,711 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:53:47,784 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 09:53:47,785 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 09:53:47,786 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2018-11-18 09:53:47,826 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 24 [2018-11-18 09:53:47,826 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 09:53:47,836 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2018-11-18 09:53:47,840 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 4 [2018-11-18 09:53:47,840 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 09:53:47,842 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 09:53:47,844 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 09:53:47,852 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 09:53:47,852 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:46, output treesize:18 [2018-11-18 09:53:48,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:53:48,056 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:53:48,064 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:53:48,064 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-11-18 09:53:48,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 09:53:48,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 09:53:48,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-11-18 09:53:48,065 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 11 states. [2018-11-18 09:53:49,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:53:49,166 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2018-11-18 09:53:49,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 09:53:49,167 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2018-11-18 09:53:49,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:53:49,167 INFO L225 Difference]: With dead ends: 40 [2018-11-18 09:53:49,167 INFO L226 Difference]: Without dead ends: 32 [2018-11-18 09:53:49,168 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2018-11-18 09:53:49,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-18 09:53:49,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-11-18 09:53:49,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-18 09:53:49,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-11-18 09:53:49,170 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 26 [2018-11-18 09:53:49,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:53:49,170 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-11-18 09:53:49,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 09:53:49,171 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-11-18 09:53:49,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-18 09:53:49,171 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:53:49,171 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:53:49,171 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:53:49,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:53:49,171 INFO L82 PathProgramCache]: Analyzing trace with hash 277995169, now seen corresponding path program 1 times [2018-11-18 09:53:49,172 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:53:49,172 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/bin-2019/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-11-18 09:53:49,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:53:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:53:49,268 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:53:49,283 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 09:53:49,284 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 09:53:49,284 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2018-11-18 09:53:49,315 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 24 [2018-11-18 09:53:49,316 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 09:53:49,327 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2018-11-18 09:53:49,332 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 4 [2018-11-18 09:53:49,332 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 09:53:49,335 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 09:53:49,338 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 09:53:49,343 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 09:53:49,344 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:42, output treesize:14 [2018-11-18 09:53:49,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:53:49,425 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:53:49,435 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:53:49,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 09:53:49,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 09:53:49,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 09:53:49,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 09:53:49,436 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 7 states. [2018-11-18 09:53:49,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:53:49,892 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-11-18 09:53:49,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 09:53:49,893 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2018-11-18 09:53:49,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:53:49,893 INFO L225 Difference]: With dead ends: 38 [2018-11-18 09:53:49,893 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 09:53:49,893 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-11-18 09:53:49,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 09:53:49,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 09:53:49,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 09:53:49,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 09:53:49,894 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2018-11-18 09:53:49,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:53:49,894 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 09:53:49,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 09:53:49,894 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 09:53:49,894 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 09:53:49,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 09:53:49,981 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 09:53:49,981 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 09:53:49,981 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 09:53:49,982 INFO L425 ceAbstractionStarter]: For program point L66-1(lines 66 71) no Hoare annotation was computed. [2018-11-18 09:53:49,982 INFO L421 ceAbstractionStarter]: At program point L66-3(lines 66 71) the Hoare annotation is: (= isinf_double_~x |isinf_double_#in~x|) [2018-11-18 09:53:49,982 INFO L425 ceAbstractionStarter]: For program point L66-4(lines 66 71) no Hoare annotation was computed. [2018-11-18 09:53:49,982 INFO L425 ceAbstractionStarter]: For program point isinf_doubleFINAL(lines 64 76) no Hoare annotation was computed. [2018-11-18 09:53:49,982 INFO L425 ceAbstractionStarter]: For program point isinf_doubleEXIT(lines 64 76) no Hoare annotation was computed. [2018-11-18 09:53:49,982 INFO L428 ceAbstractionStarter]: At program point isinf_doubleENTRY(lines 64 76) the Hoare annotation is: true [2018-11-18 09:53:49,982 INFO L425 ceAbstractionStarter]: For program point L27(lines 27 28) no Hoare annotation was computed. [2018-11-18 09:53:49,982 INFO L425 ceAbstractionStarter]: For program point round_doubleFINAL(lines 14 61) no Hoare annotation was computed. [2018-11-18 09:53:49,982 INFO L425 ceAbstractionStarter]: For program point L27-2(lines 27 28) no Hoare annotation was computed. [2018-11-18 09:53:49,982 INFO L428 ceAbstractionStarter]: At program point round_doubleENTRY(lines 14 61) the Hoare annotation is: true [2018-11-18 09:53:49,982 INFO L425 ceAbstractionStarter]: For program point L32(lines 32 33) no Hoare annotation was computed. [2018-11-18 09:53:49,982 INFO L425 ceAbstractionStarter]: For program point L24(lines 24 53) no Hoare annotation was computed. [2018-11-18 09:53:49,982 INFO L425 ceAbstractionStarter]: For program point round_doubleEXIT(lines 14 61) no Hoare annotation was computed. [2018-11-18 09:53:49,983 INFO L425 ceAbstractionStarter]: For program point L49(lines 49 50) no Hoare annotation was computed. [2018-11-18 09:53:49,983 INFO L425 ceAbstractionStarter]: For program point L49-2(lines 49 50) no Hoare annotation was computed. [2018-11-18 09:53:49,983 INFO L425 ceAbstractionStarter]: For program point L25(lines 25 37) no Hoare annotation was computed. [2018-11-18 09:53:49,983 INFO L425 ceAbstractionStarter]: For program point L54(lines 54 59) no Hoare annotation was computed. [2018-11-18 09:53:49,983 INFO L425 ceAbstractionStarter]: For program point L54-2(lines 14 61) no Hoare annotation was computed. [2018-11-18 09:53:49,983 INFO L425 ceAbstractionStarter]: For program point L54-3(lines 54 59) no Hoare annotation was computed. [2018-11-18 09:53:49,983 INFO L425 ceAbstractionStarter]: For program point L17-1(lines 17 22) no Hoare annotation was computed. [2018-11-18 09:53:49,983 INFO L421 ceAbstractionStarter]: At program point L17-3(lines 17 22) the Hoare annotation is: (= |round_double_#in~x| round_double_~x) [2018-11-18 09:53:49,983 INFO L425 ceAbstractionStarter]: For program point L46(lines 46 47) no Hoare annotation was computed. [2018-11-18 09:53:49,983 INFO L425 ceAbstractionStarter]: For program point L17-4(lines 17 22) no Hoare annotation was computed. [2018-11-18 09:53:49,983 INFO L425 ceAbstractionStarter]: For program point L38(lines 38 53) no Hoare annotation was computed. [2018-11-18 09:53:49,983 INFO L425 ceAbstractionStarter]: For program point L39(lines 39 42) no Hoare annotation was computed. [2018-11-18 09:53:49,983 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 09:53:49,983 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 09:53:49,984 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 09:53:49,984 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 09:53:49,984 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 91) no Hoare annotation was computed. [2018-11-18 09:53:49,984 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 78 96) the Hoare annotation is: true [2018-11-18 09:53:49,984 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 78 96) no Hoare annotation was computed. [2018-11-18 09:53:49,984 INFO L425 ceAbstractionStarter]: For program point L91(line 91) no Hoare annotation was computed. [2018-11-18 09:53:49,984 INFO L421 ceAbstractionStarter]: At program point L90(line 90) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) (_ +zero 11 53)))) (and (= main_~x~0 .cse0) (= main_~res~0 (fp.add roundNearestTiesToEven .cse0 .cse0)))) [2018-11-18 09:53:49,984 INFO L425 ceAbstractionStarter]: For program point L90-1(lines 90 93) no Hoare annotation was computed. [2018-11-18 09:53:49,984 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 78 96) no Hoare annotation was computed. [2018-11-18 09:53:49,984 INFO L421 ceAbstractionStarter]: At program point L87(line 87) the Hoare annotation is: (= main_~x~0 (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) (_ +zero 11 53))) [2018-11-18 09:53:49,985 INFO L425 ceAbstractionStarter]: For program point L87-1(line 87) no Hoare annotation was computed. [2018-11-18 09:53:49,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 09:53:49 BoogieIcfgContainer [2018-11-18 09:53:49,995 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 09:53:49,996 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 09:53:49,996 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 09:53:49,996 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 09:53:49,996 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:53:04" (3/4) ... [2018-11-18 09:53:49,999 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 09:53:50,004 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 09:53:50,004 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isinf_double [2018-11-18 09:53:50,004 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure round_double [2018-11-18 09:53:50,005 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 09:53:50,008 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2018-11-18 09:53:50,009 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2018-11-18 09:53:50,009 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 09:53:50,031 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-11-18 09:53:50,031 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x == \old(x) [2018-11-18 09:53:50,049 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_64c095f6-20f4-4da5-85ef-bf87eb1c0a32/bin-2019/utaipan/witness.graphml [2018-11-18 09:53:50,049 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 09:53:50,050 INFO L168 Benchmark]: Toolchain (without parser) took 46154.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 220.2 MB). Free memory was 950.8 MB in the beginning and 1.2 GB in the end (delta: -249.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:53:50,050 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. [2018-11-18 09:53:50,050 INFO L168 Benchmark]: CACSL2BoogieTranslator took 190.20 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 934.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 09:53:50,050 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.79 ms. Allocated memory is still 1.0 GB. Free memory is still 934.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:53:50,050 INFO L168 Benchmark]: Boogie Preprocessor took 80.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.7 MB). Free memory was 934.7 MB in the beginning and 1.2 GB in the end (delta: -225.3 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. [2018-11-18 09:53:50,051 INFO L168 Benchmark]: RCFGBuilder took 401.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 26.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. [2018-11-18 09:53:50,051 INFO L168 Benchmark]: TraceAbstraction took 45408.37 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 54.5 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -77.4 MB). Peak memory consumption was 308.3 MB. Max. memory is 11.5 GB. [2018-11-18 09:53:50,051 INFO L168 Benchmark]: Witness Printer took 53.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 11.5 GB. [2018-11-18 09:53:50,053 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 190.20 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 934.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.79 ms. Allocated memory is still 1.0 GB. Free memory is still 934.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 80.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.7 MB). Free memory was 934.7 MB in the beginning and 1.2 GB in the end (delta: -225.3 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 401.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 26.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 45408.37 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 54.5 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -77.4 MB). Peak memory consumption was 308.3 MB. Max. memory is 11.5 GB. * Witness Printer took 53.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 91]: 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: 17]: Loop Invariant Derived loop invariant: \old(x) == x - InvariantResult [Line: 66]: Loop Invariant Derived loop invariant: x == \old(x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 41 locations, 1 error locations. SAFE Result, 45.3s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 33.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 146 SDtfs, 130 SDslu, 602 SDs, 0 SdLazy, 324 SolverSat, 30 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 9.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 154 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 34.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred 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, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 18 PreInvPairs, 23 NumberOfFragments, 45 HoareAnnotationTreeSize, 18 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 10.7s InterpolantComputationTime, 133 NumberOfCodeBlocks, 133 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 128 ConstructedInterpolants, 29 QuantifiedInterpolants, 28129 SizeOfPredicates, 21 NumberOfNonLiveVariables, 390 ConjunctsInSsa, 52 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...