./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a_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_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/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 cd0c8f7b91fa815011541d5ffb41102d34132ba8 ................................................................................................................................................................................................................................................................................................................................................................................................... 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_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/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 cd0c8f7b91fa815011541d5ffb41102d34132ba8 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 13:03:04,559 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:03:04,560 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:03:04,569 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:03:04,570 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:03:04,571 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:03:04,572 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:03:04,574 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:03:04,575 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:03:04,576 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:03:04,577 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:03:04,577 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:03:04,578 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:03:04,579 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:03:04,580 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:03:04,580 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:03:04,581 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:03:04,583 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:03:04,585 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:03:04,586 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:03:04,588 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:03:04,589 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:03:04,591 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:03:04,591 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:03:04,591 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:03:04,593 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:03:04,593 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:03:04,594 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:03:04,595 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:03:04,596 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:03:04,596 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:03:04,597 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:03:04,597 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:03:04,597 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:03:04,598 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:03:04,598 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:03:04,599 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 13:03:04,610 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:03:04,610 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:03:04,610 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 13:03:04,610 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 13:03:04,611 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 13:03:04,611 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 13:03:04,611 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 13:03:04,611 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 13:03:04,611 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 13:03:04,611 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 13:03:04,611 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 13:03:04,611 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 13:03:04,612 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 13:03:04,612 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:03:04,612 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 13:03:04,612 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 13:03:04,612 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 13:03:04,613 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:03:04,613 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 13:03:04,613 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 13:03:04,613 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 13:03:04,613 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 13:03:04,613 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:03:04,613 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:03:04,614 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 13:03:04,614 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:03:04,614 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:03:04,614 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 13:03:04,614 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 13:03:04,614 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:03:04,614 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:03:04,614 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 13:03:04,614 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 13:03:04,614 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 13:03:04,614 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 13:03:04,614 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 13:03:04,615 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 13:03:04,615 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_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/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 -> cd0c8f7b91fa815011541d5ffb41102d34132ba8 [2018-11-18 13:03:04,642 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:03:04,653 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:03:04,655 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:03:04,657 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:03:04,657 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:03:04,658 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c [2018-11-18 13:03:04,702 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/bin-2019/utaipan/data/bcb6d55c3/583b647998b34031b06adaaf920d40f6/FLAG23b8fe34f [2018-11-18 13:03:05,081 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:03:05,081 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c [2018-11-18 13:03:05,088 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/bin-2019/utaipan/data/bcb6d55c3/583b647998b34031b06adaaf920d40f6/FLAG23b8fe34f [2018-11-18 13:03:05,101 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/bin-2019/utaipan/data/bcb6d55c3/583b647998b34031b06adaaf920d40f6 [2018-11-18 13:03:05,104 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:03:05,105 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 13:03:05,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:03:05,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:03:05,110 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:03:05,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:03:05" (1/1) ... [2018-11-18 13:03:05,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c07ef83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:05, skipping insertion in model container [2018-11-18 13:03:05,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:03:05" (1/1) ... [2018-11-18 13:03:05,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:03:05,141 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:03:05,277 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:03:05,279 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:03:05,294 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:03:05,307 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:03:05,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:05 WrapperNode [2018-11-18 13:03:05,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:03:05,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 13:03:05,309 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 13:03:05,309 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 13:03:05,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:05" (1/1) ... [2018-11-18 13:03:05,320 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:05" (1/1) ... [2018-11-18 13:03:05,325 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 13:03:05,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:03:05,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:03:05,325 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:03:05,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:05" (1/1) ... [2018-11-18 13:03:05,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:05" (1/1) ... [2018-11-18 13:03:05,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:05" (1/1) ... [2018-11-18 13:03:05,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:05" (1/1) ... [2018-11-18 13:03:05,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:05" (1/1) ... [2018-11-18 13:03:05,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:05" (1/1) ... [2018-11-18 13:03:05,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:05" (1/1) ... [2018-11-18 13:03:05,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:03:05,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:03:05,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:03:05,385 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:03:05,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/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 13:03:05,422 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 13:03:05,422 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 13:03:05,423 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-18 13:03:05,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-18 13:03:05,423 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-11-18 13:03:05,423 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-11-18 13:03:05,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 13:03:05,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 13:03:05,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-18 13:03:05,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 13:03:05,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:03:05,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:03:05,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 13:03:05,424 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-11-18 13:03:05,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-11-18 13:03:05,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 13:03:05,602 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:03:05,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:03:05 BoogieIcfgContainer [2018-11-18 13:03:05,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:03:05,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 13:03:05,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 13:03:05,606 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 13:03:05,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:03:05" (1/3) ... [2018-11-18 13:03:05,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68895756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:03:05, skipping insertion in model container [2018-11-18 13:03:05,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:05" (2/3) ... [2018-11-18 13:03:05,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68895756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:03:05, skipping insertion in model container [2018-11-18 13:03:05,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:03:05" (3/3) ... [2018-11-18 13:03:05,609 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a_true-unreach-call.c [2018-11-18 13:03:05,617 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 13:03:05,623 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 13:03:05,637 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 13:03:05,660 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 13:03:05,660 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 13:03:05,660 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 13:03:05,660 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:03:05,660 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:03:05,660 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 13:03:05,661 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:03:05,661 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 13:03:05,675 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-11-18 13:03:05,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 13:03:05,679 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:03:05,680 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] [2018-11-18 13:03:05,681 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:03:05,685 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:03:05,685 INFO L82 PathProgramCache]: Analyzing trace with hash -256873479, now seen corresponding path program 1 times [2018-11-18 13:03:05,687 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:03:05,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:03:05,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:03:05,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:03:05,725 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:03:05,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:03:05,794 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 13:03:05,799 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:03:05,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 13:03:05,799 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:03:05,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 13:03:05,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 13:03:05,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 13:03:05,812 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-11-18 13:03:05,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:03:05,833 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2018-11-18 13:03:05,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 13:03:05,835 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-11-18 13:03:05,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:03:05,843 INFO L225 Difference]: With dead ends: 79 [2018-11-18 13:03:05,843 INFO L226 Difference]: Without dead ends: 40 [2018-11-18 13:03:05,846 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 13:03:05,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-18 13:03:05,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-18 13:03:05,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 13:03:05,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-18 13:03:05,879 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2018-11-18 13:03:05,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:03:05,880 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-18 13:03:05,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 13:03:05,880 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-18 13:03:05,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 13:03:05,882 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:03:05,882 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] [2018-11-18 13:03:05,882 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:03:05,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:03:05,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1818864989, now seen corresponding path program 1 times [2018-11-18 13:03:05,883 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:03:05,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:03:05,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:03:05,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:03:05,884 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:03:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:03:05,971 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 13:03:05,971 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:03:05,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 13:03:05,971 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:03:05,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 13:03:05,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 13:03:05,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 13:03:05,973 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-11-18 13:03:06,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:03:06,033 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2018-11-18 13:03:06,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 13:03:06,034 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-18 13:03:06,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:03:06,036 INFO L225 Difference]: With dead ends: 59 [2018-11-18 13:03:06,036 INFO L226 Difference]: Without dead ends: 44 [2018-11-18 13:03:06,037 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 13:03:06,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-18 13:03:06,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-18 13:03:06,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-18 13:03:06,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-11-18 13:03:06,044 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2018-11-18 13:03:06,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:03:06,044 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-11-18 13:03:06,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 13:03:06,044 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-11-18 13:03:06,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 13:03:06,045 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:03:06,045 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 13:03:06,045 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:03:06,046 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:03:06,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1837023360, now seen corresponding path program 1 times [2018-11-18 13:03:06,046 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:03:06,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:03:06,047 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:03:06,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:03:06,047 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:03:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:03:06,129 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 13:03:06,129 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:03:06,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 13:03:06,130 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:03:06,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 13:03:06,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 13:03:06,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 13:03:06,131 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2018-11-18 13:03:06,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:03:06,158 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2018-11-18 13:03:06,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 13:03:06,159 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-11-18 13:03:06,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:03:06,159 INFO L225 Difference]: With dead ends: 63 [2018-11-18 13:03:06,160 INFO L226 Difference]: Without dead ends: 48 [2018-11-18 13:03:06,160 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 13:03:06,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-18 13:03:06,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-11-18 13:03:06,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-18 13:03:06,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-11-18 13:03:06,166 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2018-11-18 13:03:06,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:03:06,166 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-11-18 13:03:06,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 13:03:06,166 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-11-18 13:03:06,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 13:03:06,167 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:03:06,167 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 13:03:06,167 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:03:06,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:03:06,168 INFO L82 PathProgramCache]: Analyzing trace with hash 660992577, now seen corresponding path program 1 times [2018-11-18 13:03:06,168 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:03:06,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:03:06,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:03:06,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:03:06,171 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:03:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:03:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:03:06,218 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 13:03:06,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:03:06 BoogieIcfgContainer [2018-11-18 13:03:06,243 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 13:03:06,244 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 13:03:06,244 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 13:03:06,244 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 13:03:06,244 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:03:05" (3/4) ... [2018-11-18 13:03:06,248 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 13:03:06,248 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 13:03:06,249 INFO L168 Benchmark]: Toolchain (without parser) took 1144.28 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 71.3 MB). Free memory was 962.5 MB in the beginning and 992.8 MB in the end (delta: -30.4 MB). Peak memory consumption was 41.0 MB. Max. memory is 11.5 GB. [2018-11-18 13:03:06,250 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:03:06,250 INFO L168 Benchmark]: CACSL2BoogieTranslator took 202.21 ms. Allocated memory is still 1.0 GB. Free memory was 962.5 MB in the beginning and 946.4 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 13:03:06,251 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.54 ms. Allocated memory is still 1.0 GB. Free memory is still 946.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:03:06,251 INFO L168 Benchmark]: Boogie Preprocessor took 58.79 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 71.3 MB). Free memory was 946.4 MB in the beginning and 1.1 GB in the end (delta: -114.6 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. [2018-11-18 13:03:06,252 INFO L168 Benchmark]: RCFGBuilder took 218.55 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2018-11-18 13:03:06,253 INFO L168 Benchmark]: TraceAbstraction took 639.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 992.8 MB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 11.5 GB. [2018-11-18 13:03:06,253 INFO L168 Benchmark]: Witness Printer took 4.29 ms. Allocated memory is still 1.1 GB. Free memory is still 992.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:03:06,255 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 202.21 ms. Allocated memory is still 1.0 GB. Free memory was 962.5 MB in the beginning and 946.4 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 16.54 ms. Allocated memory is still 1.0 GB. Free memory is still 946.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 58.79 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 71.3 MB). Free memory was 946.4 MB in the beginning and 1.1 GB in the end (delta: -114.6 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 218.55 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 639.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 992.8 MB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 11.5 GB. * Witness Printer took 4.29 ms. Allocated memory is still 1.1 GB. Free memory is still 992.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someUnaryFLOAToperation at line 65. Possible FailurePath: [L64] float x = 0.0f; [L65] float y = -0.0f; VAL [x=0] [L66] CALL, EXPR fmin_float(x, y) VAL [\old(x)=0, \old(y)=4286578691] [L36] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0] [L13] __uint32_t w; VAL [\old(x)=0, x=0] [L16] FCALL ieee_float_shape_type gf_u; [L17] FCALL gf_u.value = (x) [L18] EXPR, FCALL gf_u.word [L18] (w) = gf_u.word [L19] COND FALSE !(0) VAL [\old(x)=0, w=4286578689, x=0] [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=0, w=4286578689, x=0] [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] RET return 0; VAL [\old(x)=0, \result=0, w=4286578689, x=0] [L36] EXPR __fpclassify_float(x) VAL [\old(x)=0, \old(y)=4286578691, __fpclassify_float(x)=0, x=0, y=4286578691] [L36] COND TRUE __fpclassify_float(x) == 0 [L37] RET return y; VAL [\old(x)=0, \old(y)=4286578691, \result=4286578691, x=0, y=4286578691] [L66] EXPR fmin_float(x, y) VAL [fmin_float(x, y)=4286578691, x=0, y=4286578691] [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=4286578691, res == -0.0f && __signbit_float(res) == 1=0, x=0, y=4286578691] [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() VAL [res=4286578691, x=0, y=4286578691] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 144 SDtfs, 0 SDslu, 172 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1926 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 13:03:07,986 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:03:07,988 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:03:07,997 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:03:07,998 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:03:07,998 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:03:08,000 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:03:08,001 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:03:08,002 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:03:08,003 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:03:08,003 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:03:08,004 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:03:08,004 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:03:08,009 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:03:08,010 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:03:08,010 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:03:08,011 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:03:08,012 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:03:08,013 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:03:08,015 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:03:08,016 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:03:08,016 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:03:08,019 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:03:08,019 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:03:08,019 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:03:08,020 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:03:08,021 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:03:08,022 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:03:08,023 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:03:08,024 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:03:08,024 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:03:08,024 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:03:08,025 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:03:08,025 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:03:08,025 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:03:08,026 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:03:08,026 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-18 13:03:08,036 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:03:08,037 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:03:08,037 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 13:03:08,037 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 13:03:08,038 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 13:03:08,038 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 13:03:08,038 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 13:03:08,038 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 13:03:08,038 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 13:03:08,038 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 13:03:08,038 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:03:08,039 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 13:03:08,039 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 13:03:08,039 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:03:08,039 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 13:03:08,039 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 13:03:08,039 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 13:03:08,039 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 13:03:08,039 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 13:03:08,040 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 13:03:08,040 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:03:08,040 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:03:08,040 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 13:03:08,040 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:03:08,040 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:03:08,040 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 13:03:08,040 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 13:03:08,040 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:03:08,040 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:03:08,041 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 13:03:08,041 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 13:03:08,041 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 13:03:08,041 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 13:03:08,041 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 13:03:08,041 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 13:03:08,041 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_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/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 -> cd0c8f7b91fa815011541d5ffb41102d34132ba8 [2018-11-18 13:03:08,069 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:03:08,078 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:03:08,080 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:03:08,081 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:03:08,081 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:03:08,081 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c [2018-11-18 13:03:08,118 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/bin-2019/utaipan/data/1681ffa2c/861287f121734ac387dd2f9f09ffe4e4/FLAGad385a843 [2018-11-18 13:03:08,462 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:03:08,463 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c [2018-11-18 13:03:08,468 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/bin-2019/utaipan/data/1681ffa2c/861287f121734ac387dd2f9f09ffe4e4/FLAGad385a843 [2018-11-18 13:03:08,881 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/bin-2019/utaipan/data/1681ffa2c/861287f121734ac387dd2f9f09ffe4e4 [2018-11-18 13:03:08,883 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:03:08,884 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 13:03:08,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:03:08,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:03:08,888 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:03:08,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:03:08" (1/1) ... [2018-11-18 13:03:08,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f092cfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:08, skipping insertion in model container [2018-11-18 13:03:08,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:03:08" (1/1) ... [2018-11-18 13:03:08,897 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:03:08,912 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:03:09,061 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:03:09,066 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:03:09,090 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:03:09,109 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:03:09,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:09 WrapperNode [2018-11-18 13:03:09,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:03:09,110 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 13:03:09,110 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 13:03:09,111 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 13:03:09,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:09" (1/1) ... [2018-11-18 13:03:09,125 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:09" (1/1) ... [2018-11-18 13:03:09,132 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 13:03:09,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:03:09,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:03:09,133 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:03:09,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:09" (1/1) ... [2018-11-18 13:03:09,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:09" (1/1) ... [2018-11-18 13:03:09,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:09" (1/1) ... [2018-11-18 13:03:09,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:09" (1/1) ... [2018-11-18 13:03:09,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:09" (1/1) ... [2018-11-18 13:03:09,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:09" (1/1) ... [2018-11-18 13:03:09,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:09" (1/1) ... [2018-11-18 13:03:09,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:03:09,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:03:09,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:03:09,166 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:03:09,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/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 13:03:09,281 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 13:03:09,281 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 13:03:09,281 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-18 13:03:09,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-18 13:03:09,281 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-11-18 13:03:09,281 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-11-18 13:03:09,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 13:03:09,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 13:03:09,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 13:03:09,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 13:03:09,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:03:09,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:03:09,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-18 13:03:09,282 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-11-18 13:03:09,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-11-18 13:03:09,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 13:03:09,577 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 13:03:09,623 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 13:03:09,629 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:03:09,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:03:09 BoogieIcfgContainer [2018-11-18 13:03:09,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:03:09,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 13:03:09,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 13:03:09,635 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 13:03:09,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:03:08" (1/3) ... [2018-11-18 13:03:09,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93ff5d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:03:09, skipping insertion in model container [2018-11-18 13:03:09,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:09" (2/3) ... [2018-11-18 13:03:09,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93ff5d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:03:09, skipping insertion in model container [2018-11-18 13:03:09,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:03:09" (3/3) ... [2018-11-18 13:03:09,637 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a_true-unreach-call.c [2018-11-18 13:03:09,644 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 13:03:09,650 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 13:03:09,663 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 13:03:09,690 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 13:03:09,690 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 13:03:09,690 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 13:03:09,690 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 13:03:09,690 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:03:09,690 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:03:09,691 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 13:03:09,691 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:03:09,691 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 13:03:09,704 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-11-18 13:03:09,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 13:03:09,709 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:03:09,710 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] [2018-11-18 13:03:09,713 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:03:09,717 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:03:09,717 INFO L82 PathProgramCache]: Analyzing trace with hash -896392580, now seen corresponding path program 1 times [2018-11-18 13:03:09,720 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:03:09,720 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/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 13:03:09,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:03:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:03:09,786 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:03:09,804 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 13:03:09,804 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:03:09,818 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:03:09,818 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 13:03:09,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 13:03:09,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 13:03:09,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 13:03:09,833 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-11-18 13:03:09,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:03:09,851 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-11-18 13:03:09,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 13:03:09,852 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-18 13:03:09,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:03:09,860 INFO L225 Difference]: With dead ends: 75 [2018-11-18 13:03:09,860 INFO L226 Difference]: Without dead ends: 38 [2018-11-18 13:03:09,863 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 13:03:09,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-18 13:03:09,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-11-18 13:03:09,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-18 13:03:09,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-11-18 13:03:09,898 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2018-11-18 13:03:09,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:03:09,899 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-11-18 13:03:09,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 13:03:09,899 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-11-18 13:03:09,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 13:03:09,901 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:03:09,901 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] [2018-11-18 13:03:09,901 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:03:09,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:03:09,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1453912222, now seen corresponding path program 1 times [2018-11-18 13:03:09,902 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:03:09,902 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/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 13:03:09,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:03:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:03:09,947 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:03:10,015 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 13:03:10,016 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:03:10,031 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:03:10,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 13:03:10,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 13:03:10,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 13:03:10,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 13:03:10,033 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-11-18 13:03:10,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:03:10,082 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-11-18 13:03:10,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 13:03:10,083 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-11-18 13:03:10,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:03:10,086 INFO L225 Difference]: With dead ends: 56 [2018-11-18 13:03:10,086 INFO L226 Difference]: Without dead ends: 41 [2018-11-18 13:03:10,087 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 13:03:10,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-18 13:03:10,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-18 13:03:10,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-18 13:03:10,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2018-11-18 13:03:10,095 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22 [2018-11-18 13:03:10,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:03:10,096 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-11-18 13:03:10,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 13:03:10,096 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2018-11-18 13:03:10,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 13:03:10,097 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:03:10,097 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] [2018-11-18 13:03:10,097 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:03:10,097 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:03:10,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1742135559, now seen corresponding path program 1 times [2018-11-18 13:03:10,098 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:03:10,098 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/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 13:03:10,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:03:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:03:10,152 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:03:10,310 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 13:03:10,310 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:03:10,326 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:03:10,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 13:03:10,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 13:03:10,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 13:03:10,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 13:03:10,328 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 8 states. [2018-11-18 13:03:11,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:03:11,072 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2018-11-18 13:03:11,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 13:03:11,074 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-11-18 13:03:11,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:03:11,075 INFO L225 Difference]: With dead ends: 60 [2018-11-18 13:03:11,075 INFO L226 Difference]: Without dead ends: 40 [2018-11-18 13:03:11,075 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-18 13:03:11,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-18 13:03:11,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-18 13:03:11,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 13:03:11,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-11-18 13:03:11,082 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 23 [2018-11-18 13:03:11,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:03:11,083 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-11-18 13:03:11,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 13:03:11,083 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-11-18 13:03:11,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 13:03:11,084 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:03:11,084 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:03:11,085 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:03:11,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:03:11,085 INFO L82 PathProgramCache]: Analyzing trace with hash -71270131, now seen corresponding path program 1 times [2018-11-18 13:03:11,086 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:03:11,086 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/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 13:03:11,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:03:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:03:11,132 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:03:11,153 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 13:03:11,154 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:03:11,162 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:03:11,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 13:03:11,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 13:03:11,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 13:03:11,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 13:03:11,163 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 4 states. [2018-11-18 13:03:11,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:03:11,182 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2018-11-18 13:03:11,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 13:03:11,182 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-18 13:03:11,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:03:11,183 INFO L225 Difference]: With dead ends: 56 [2018-11-18 13:03:11,184 INFO L226 Difference]: Without dead ends: 41 [2018-11-18 13:03:11,184 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 13:03:11,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-18 13:03:11,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-18 13:03:11,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-18 13:03:11,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-11-18 13:03:11,190 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 30 [2018-11-18 13:03:11,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:03:11,190 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-11-18 13:03:11,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 13:03:11,190 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-11-18 13:03:11,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-18 13:03:11,191 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:03:11,191 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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 13:03:11,191 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:03:11,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:03:11,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1045848080, now seen corresponding path program 1 times [2018-11-18 13:03:11,192 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:03:11,192 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/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 13:03:11,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:03:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:03:11,247 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:03:11,346 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 13:03:11,346 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:03:11,355 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:03:11,355 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 13:03:11,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 13:03:11,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 13:03:11,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 13:03:11,356 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 8 states. [2018-11-18 13:03:11,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:03:11,724 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2018-11-18 13:03:11,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 13:03:11,725 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-11-18 13:03:11,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:03:11,726 INFO L225 Difference]: With dead ends: 58 [2018-11-18 13:03:11,726 INFO L226 Difference]: Without dead ends: 35 [2018-11-18 13:03:11,727 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-18 13:03:11,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-18 13:03:11,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-18 13:03:11,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-18 13:03:11,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-11-18 13:03:11,730 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 31 [2018-11-18 13:03:11,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:03:11,731 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-11-18 13:03:11,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 13:03:11,731 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-11-18 13:03:11,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-18 13:03:11,732 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:03:11,732 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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 13:03:11,732 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:03:11,732 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:03:11,733 INFO L82 PathProgramCache]: Analyzing trace with hash -745380494, now seen corresponding path program 1 times [2018-11-18 13:03:11,733 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:03:11,733 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/bin-2019/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-11-18 13:03:11,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:03:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:03:11,777 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:03:11,846 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 13:03:11,847 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:03:11,855 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:03:11,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 13:03:11,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 13:03:11,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 13:03:11,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 13:03:11,856 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 5 states. [2018-11-18 13:03:11,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:03:11,920 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-11-18 13:03:11,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 13:03:11,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-11-18 13:03:11,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:03:11,922 INFO L225 Difference]: With dead ends: 51 [2018-11-18 13:03:11,922 INFO L226 Difference]: Without dead ends: 35 [2018-11-18 13:03:11,922 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 13:03:11,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-18 13:03:11,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-18 13:03:11,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-18 13:03:11,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-11-18 13:03:11,926 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2018-11-18 13:03:11,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:03:11,926 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-11-18 13:03:11,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 13:03:11,926 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-11-18 13:03:11,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-18 13:03:11,927 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:03:11,927 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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 13:03:11,927 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:03:11,927 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:03:11,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1554727120, now seen corresponding path program 1 times [2018-11-18 13:03:11,928 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:03:11,928 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/bin-2019/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-11-18 13:03:11,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:03:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:03:11,977 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:03:12,040 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 13:03:12,040 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:03:12,048 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:03:12,048 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 13:03:12,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 13:03:12,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 13:03:12,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 13:03:12,049 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 8 states. [2018-11-18 13:03:12,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:03:12,242 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-11-18 13:03:12,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 13:03:12,242 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-11-18 13:03:12,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:03:12,243 INFO L225 Difference]: With dead ends: 38 [2018-11-18 13:03:12,243 INFO L226 Difference]: Without dead ends: 35 [2018-11-18 13:03:12,244 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-11-18 13:03:12,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-18 13:03:12,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-18 13:03:12,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-18 13:03:12,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-11-18 13:03:12,248 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-11-18 13:03:12,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:03:12,248 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-11-18 13:03:12,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 13:03:12,248 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-11-18 13:03:12,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-18 13:03:12,249 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:03:12,249 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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 13:03:12,249 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:03:12,249 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:03:12,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1684326926, now seen corresponding path program 1 times [2018-11-18 13:03:12,250 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:03:12,250 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/bin-2019/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-11-18 13:03:12,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:03:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:03:12,307 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:03:12,506 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 13:03:12,506 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:03:12,515 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:03:12,515 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-11-18 13:03:12,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-18 13:03:12,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-18 13:03:12,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-11-18 13:03:12,516 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 13 states. [2018-11-18 13:03:12,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:03:12,875 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-11-18 13:03:12,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 13:03:12,876 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2018-11-18 13:03:12,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:03:12,876 INFO L225 Difference]: With dead ends: 35 [2018-11-18 13:03:12,876 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 13:03:12,877 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2018-11-18 13:03:12,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 13:03:12,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 13:03:12,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 13:03:12,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 13:03:12,878 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2018-11-18 13:03:12,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:03:12,878 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 13:03:12,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-18 13:03:12,878 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 13:03:12,878 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 13:03:12,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 13:03:13,030 INFO L428 ceAbstractionStarter]: At program point fmin_floatENTRY(lines 35 42) the Hoare annotation is: true [2018-11-18 13:03:13,031 INFO L425 ceAbstractionStarter]: For program point fmin_floatEXIT(lines 35 42) no Hoare annotation was computed. [2018-11-18 13:03:13,031 INFO L425 ceAbstractionStarter]: For program point fmin_floatFINAL(lines 35 42) no Hoare annotation was computed. [2018-11-18 13:03:13,031 INFO L425 ceAbstractionStarter]: For program point L41(line 41) no Hoare annotation was computed. [2018-11-18 13:03:13,031 INFO L425 ceAbstractionStarter]: For program point L41-2(line 41) no Hoare annotation was computed. [2018-11-18 13:03:13,031 INFO L421 ceAbstractionStarter]: At program point L38(line 38) the Hoare annotation is: (let ((.cse0 (= fmin_float_~x |fmin_float_#in~x|))) (or (and .cse0 (exists ((__fpclassify_float_~w~0 (_ BitVec 32))) (and (= (fp ((_ extract 31 31) __fpclassify_float_~w~0) ((_ extract 30 23) __fpclassify_float_~w~0) ((_ extract 22 0) __fpclassify_float_~w~0)) |fmin_float_#in~x|) (not (= __fpclassify_float_~w~0 (_ bv0 32)))))) (and .cse0 (= fmin_float_~y |fmin_float_#in~y|)))) [2018-11-18 13:03:13,031 INFO L425 ceAbstractionStarter]: For program point L38-1(lines 38 39) no Hoare annotation was computed. [2018-11-18 13:03:13,031 INFO L421 ceAbstractionStarter]: At program point L36(line 36) the Hoare annotation is: (and (= fmin_float_~x |fmin_float_#in~x|) (= fmin_float_~y |fmin_float_#in~y|)) [2018-11-18 13:03:13,032 INFO L425 ceAbstractionStarter]: For program point L36-1(lines 36 37) no Hoare annotation was computed. [2018-11-18 13:03:13,032 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 13:03:13,032 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 13:03:13,032 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 13:03:13,032 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 13:03:13,032 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 13:03:13,032 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 13:03:13,032 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 13:03:13,032 INFO L425 ceAbstractionStarter]: For program point L66-1(line 66) no Hoare annotation was computed. [2018-11-18 13:03:13,032 INFO L425 ceAbstractionStarter]: For program point L69-4(lines 69 72) no Hoare annotation was computed. [2018-11-18 13:03:13,032 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 56 75) the Hoare annotation is: true [2018-11-18 13:03:13,032 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 56 75) no Hoare annotation was computed. [2018-11-18 13:03:13,032 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 70) no Hoare annotation was computed. [2018-11-18 13:03:13,033 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 56 75) no Hoare annotation was computed. [2018-11-18 13:03:13,033 INFO L425 ceAbstractionStarter]: For program point L70(line 70) no Hoare annotation was computed. [2018-11-18 13:03:13,033 INFO L425 ceAbstractionStarter]: For program point L69(line 69) no Hoare annotation was computed. [2018-11-18 13:03:13,033 INFO L421 ceAbstractionStarter]: At program point L69-1(line 69) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= (_ +zero 8 24) main_~x~0) (= main_~res~0 .cse0) |main_#t~short9| (= main_~y~0 .cse0))) [2018-11-18 13:03:13,033 INFO L425 ceAbstractionStarter]: For program point L69-2(line 69) no Hoare annotation was computed. [2018-11-18 13:03:13,033 INFO L421 ceAbstractionStarter]: At program point L66(line 66) the Hoare annotation is: (and (= (_ +zero 8 24) main_~x~0) (= main_~y~0 (fp.neg (_ +zero 8 24)))) [2018-11-18 13:03:13,033 INFO L425 ceAbstractionStarter]: For program point L29(lines 29 32) no Hoare annotation was computed. [2018-11-18 13:03:13,034 INFO L425 ceAbstractionStarter]: For program point __fpclassify_floatFINAL(lines 12 33) no Hoare annotation was computed. [2018-11-18 13:03:13,034 INFO L425 ceAbstractionStarter]: For program point L23(lines 23 32) no Hoare annotation was computed. [2018-11-18 13:03:13,034 INFO L425 ceAbstractionStarter]: For program point L15-1(lines 15 19) no Hoare annotation was computed. [2018-11-18 13:03:13,034 INFO L421 ceAbstractionStarter]: At program point L15-3(lines 15 19) the Hoare annotation is: (= __fpclassify_float_~x |__fpclassify_float_#in~x|) [2018-11-18 13:03:13,034 INFO L425 ceAbstractionStarter]: For program point L15-4(lines 12 33) no Hoare annotation was computed. [2018-11-18 13:03:13,034 INFO L425 ceAbstractionStarter]: For program point L26(lines 26 32) no Hoare annotation was computed. [2018-11-18 13:03:13,034 INFO L428 ceAbstractionStarter]: At program point __fpclassify_floatENTRY(lines 12 33) the Hoare annotation is: true [2018-11-18 13:03:13,034 INFO L425 ceAbstractionStarter]: For program point __fpclassify_floatEXIT(lines 12 33) no Hoare annotation was computed. [2018-11-18 13:03:13,035 INFO L425 ceAbstractionStarter]: For program point __signbit_floatFINAL(lines 44 54) no Hoare annotation was computed. [2018-11-18 13:03:13,035 INFO L428 ceAbstractionStarter]: At program point __signbit_floatENTRY(lines 44 54) the Hoare annotation is: true [2018-11-18 13:03:13,035 INFO L425 ceAbstractionStarter]: For program point L47-1(lines 47 51) no Hoare annotation was computed. [2018-11-18 13:03:13,035 INFO L421 ceAbstractionStarter]: At program point L47-3(lines 47 51) the Hoare annotation is: (= |__signbit_float_#in~x| __signbit_float_~x) [2018-11-18 13:03:13,035 INFO L425 ceAbstractionStarter]: For program point __signbit_floatEXIT(lines 44 54) no Hoare annotation was computed. [2018-11-18 13:03:13,035 INFO L425 ceAbstractionStarter]: For program point L47-4(lines 47 51) no Hoare annotation was computed. [2018-11-18 13:03:13,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:03:13 BoogieIcfgContainer [2018-11-18 13:03:13,046 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 13:03:13,047 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 13:03:13,047 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 13:03:13,047 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 13:03:13,047 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:03:09" (3/4) ... [2018-11-18 13:03:13,050 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 13:03:13,055 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure fmin_float [2018-11-18 13:03:13,055 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 13:03:13,055 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 13:03:13,055 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2018-11-18 13:03:13,055 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_float [2018-11-18 13:03:13,059 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2018-11-18 13:03:13,060 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-18 13:03:13,060 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 13:03:13,082 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x == \old(x) [2018-11-18 13:03:13,083 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-11-18 13:03:13,107 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_5d3cea39-dc17-4184-bcf0-d4d4b5776bc4/bin-2019/utaipan/witness.graphml [2018-11-18 13:03:13,108 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 13:03:13,108 INFO L168 Benchmark]: Toolchain (without parser) took 4224.78 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.9 MB). Free memory was 949.7 MB in the beginning and 795.3 MB in the end (delta: 154.4 MB). Peak memory consumption was 249.3 MB. Max. memory is 11.5 GB. [2018-11-18 13:03:13,110 INFO L168 Benchmark]: CDTParser took 0.12 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 13:03:13,110 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.21 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 933.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 13:03:13,110 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.13 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:03:13,111 INFO L168 Benchmark]: Boogie Preprocessor took 32.69 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:03:13,111 INFO L168 Benchmark]: RCFGBuilder took 464.00 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.9 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -130.0 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. [2018-11-18 13:03:13,111 INFO L168 Benchmark]: TraceAbstraction took 3415.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 802.3 MB in the end (delta: 261.3 MB). Peak memory consumption was 261.3 MB. Max. memory is 11.5 GB. [2018-11-18 13:03:13,112 INFO L168 Benchmark]: Witness Printer took 61.03 ms. Allocated memory is still 1.1 GB. Free memory was 802.3 MB in the beginning and 795.3 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2018-11-18 13:03:13,114 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 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 225.21 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 933.6 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 22.13 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.69 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 464.00 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.9 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -130.0 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3415.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 802.3 MB in the end (delta: 261.3 MB). Peak memory consumption was 261.3 MB. Max. memory is 11.5 GB. * Witness Printer took 61.03 ms. Allocated memory is still 1.1 GB. Free memory was 802.3 MB in the beginning and 795.3 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 70]: 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: 15]: Loop Invariant Derived loop invariant: x == \old(x) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. SAFE Result, 3.3s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 1.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 296 SDtfs, 121 SDslu, 975 SDs, 0 SdLazy, 365 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 242 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.0s 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 31 PreInvPairs, 38 NumberOfFragments, 68 HoareAnnotationTreeSize, 31 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 231 NumberOfCodeBlocks, 231 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 223 ConstructedInterpolants, 14 QuantifiedInterpolants, 20350 SizeOfPredicates, 21 NumberOfNonLiveVariables, 624 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 30/30 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...