./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/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 c8e4dbe5a9ab518912f1108432d43f490ec977d7 ........................................................................................................................................................................................................................................................................................................................................................................................................... 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_b8221dc4-1152-4d22-8350-19f545b002c6/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/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 c8e4dbe5a9ab518912f1108432d43f490ec977d7 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 19:28:27,522 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 19:28:27,523 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 19:28:27,532 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 19:28:27,533 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 19:28:27,533 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 19:28:27,534 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 19:28:27,535 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 19:28:27,537 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 19:28:27,537 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 19:28:27,538 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 19:28:27,538 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 19:28:27,539 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 19:28:27,539 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 19:28:27,540 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 19:28:27,541 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 19:28:27,541 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 19:28:27,543 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 19:28:27,544 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 19:28:27,545 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 19:28:27,546 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 19:28:27,547 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 19:28:27,549 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 19:28:27,549 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 19:28:27,549 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 19:28:27,550 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 19:28:27,550 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 19:28:27,551 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 19:28:27,552 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 19:28:27,552 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 19:28:27,553 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 19:28:27,553 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 19:28:27,553 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 19:28:27,553 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 19:28:27,554 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 19:28:27,555 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 19:28:27,555 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-02 19:28:27,566 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 19:28:27,566 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 19:28:27,566 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 19:28:27,566 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 19:28:27,566 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 19:28:27,567 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 19:28:27,567 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 19:28:27,567 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 19:28:27,567 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 19:28:27,567 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 19:28:27,567 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 19:28:27,567 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 19:28:27,567 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 19:28:27,568 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 19:28:27,568 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 19:28:27,568 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 19:28:27,568 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 19:28:27,568 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 19:28:27,568 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 19:28:27,569 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 19:28:27,569 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 19:28:27,569 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 19:28:27,569 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 19:28:27,569 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 19:28:27,569 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 19:28:27,569 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 19:28:27,569 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 19:28:27,569 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 19:28:27,569 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 19:28:27,570 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 19:28:27,570 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 19:28:27,570 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 19:28:27,570 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 19:28:27,570 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 19:28:27,570 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 19:28:27,570 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-02 19:28:27,570 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_b8221dc4-1152-4d22-8350-19f545b002c6/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 -> c8e4dbe5a9ab518912f1108432d43f490ec977d7 [2018-12-02 19:28:27,593 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 19:28:27,601 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 19:28:27,602 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 19:28:27,603 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 19:28:27,603 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 19:28:27,604 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-12-02 19:28:27,639 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/bin-2019/utaipan/data/627edf0a5/789a4a23b63a457e8372e767deab4595/FLAG8ff657992 [2018-12-02 19:28:28,030 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 19:28:28,031 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-12-02 19:28:28,034 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/bin-2019/utaipan/data/627edf0a5/789a4a23b63a457e8372e767deab4595/FLAG8ff657992 [2018-12-02 19:28:28,042 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/bin-2019/utaipan/data/627edf0a5/789a4a23b63a457e8372e767deab4595 [2018-12-02 19:28:28,043 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 19:28:28,044 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 19:28:28,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 19:28:28,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 19:28:28,047 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 19:28:28,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:28:28" (1/1) ... [2018-12-02 19:28:28,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f49b694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:28, skipping insertion in model container [2018-12-02 19:28:28,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:28:28" (1/1) ... [2018-12-02 19:28:28,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 19:28:28,063 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 19:28:28,155 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 19:28:28,157 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 19:28:28,171 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 19:28:28,183 INFO L195 MainTranslator]: Completed translation [2018-12-02 19:28:28,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:28 WrapperNode [2018-12-02 19:28:28,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 19:28:28,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 19:28:28,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 19:28:28,184 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 19:28:28,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:28" (1/1) ... [2018-12-02 19:28:28,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:28" (1/1) ... [2018-12-02 19:28:28,198 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 19:28:28,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 19:28:28,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 19:28:28,198 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 19:28:28,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:28" (1/1) ... [2018-12-02 19:28:28,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:28" (1/1) ... [2018-12-02 19:28:28,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:28" (1/1) ... [2018-12-02 19:28:28,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:28" (1/1) ... [2018-12-02 19:28:28,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:28" (1/1) ... [2018-12-02 19:28:28,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:28" (1/1) ... [2018-12-02 19:28:28,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:28" (1/1) ... [2018-12-02 19:28:28,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 19:28:28,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 19:28:28,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 19:28:28,248 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 19:28:28,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 19:28:28,280 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 19:28:28,280 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 19:28:28,281 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-12-02 19:28:28,281 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-12-02 19:28:28,281 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-12-02 19:28:28,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-12-02 19:28:28,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 19:28:28,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 19:28:28,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-02 19:28:28,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 19:28:28,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 19:28:28,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 19:28:28,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 19:28:28,281 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-02 19:28:28,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-02 19:28:28,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 19:28:28,433 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 19:28:28,434 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-02 19:28:28,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:28:28 BoogieIcfgContainer [2018-12-02 19:28:28,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 19:28:28,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 19:28:28,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 19:28:28,436 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 19:28:28,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:28:28" (1/3) ... [2018-12-02 19:28:28,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bc388d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:28:28, skipping insertion in model container [2018-12-02 19:28:28,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:28" (2/3) ... [2018-12-02 19:28:28,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bc388d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:28:28, skipping insertion in model container [2018-12-02 19:28:28,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:28:28" (3/3) ... [2018-12-02 19:28:28,439 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b_false-unreach-call.c [2018-12-02 19:28:28,445 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 19:28:28,449 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 19:28:28,460 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 19:28:28,477 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 19:28:28,478 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 19:28:28,478 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 19:28:28,478 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 19:28:28,478 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 19:28:28,478 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 19:28:28,478 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 19:28:28,478 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 19:28:28,488 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-12-02 19:28:28,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-02 19:28:28,491 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 19:28:28,492 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 19:28:28,493 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 19:28:28,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 19:28:28,497 INFO L82 PathProgramCache]: Analyzing trace with hash -278474869, now seen corresponding path program 1 times [2018-12-02 19:28:28,498 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 19:28:28,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 19:28:28,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 19:28:28,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 19:28:28,526 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 19:28:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 19:28:28,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 19:28:28,576 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 19:28:28,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 19:28:28,576 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 19:28:28,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 19:28:28,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 19:28:28,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 19:28:28,588 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-12-02 19:28:28,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 19:28:28,602 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2018-12-02 19:28:28,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 19:28:28,603 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-12-02 19:28:28,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 19:28:28,608 INFO L225 Difference]: With dead ends: 79 [2018-12-02 19:28:28,608 INFO L226 Difference]: Without dead ends: 40 [2018-12-02 19:28:28,610 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 19:28:28,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-02 19:28:28,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-02 19:28:28,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-02 19:28:28,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-12-02 19:28:28,634 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2018-12-02 19:28:28,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 19:28:28,635 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-12-02 19:28:28,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 19:28:28,635 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-12-02 19:28:28,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-02 19:28:28,636 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 19:28:28,636 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 19:28:28,636 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 19:28:28,637 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 19:28:28,637 INFO L82 PathProgramCache]: Analyzing trace with hash -428418178, now seen corresponding path program 1 times [2018-12-02 19:28:28,637 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 19:28:28,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 19:28:28,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 19:28:28,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 19:28:28,638 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 19:28:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 19:28:28,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 19:28:28,677 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 19:28:28,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 19:28:28,677 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 19:28:28,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 19:28:28,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 19:28:28,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 19:28:28,678 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-12-02 19:28:28,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 19:28:28,696 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2018-12-02 19:28:28,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 19:28:28,696 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-12-02 19:28:28,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 19:28:28,698 INFO L225 Difference]: With dead ends: 59 [2018-12-02 19:28:28,698 INFO L226 Difference]: Without dead ends: 44 [2018-12-02 19:28:28,699 INFO L631 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 [2018-12-02 19:28:28,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-02 19:28:28,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-12-02 19:28:28,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-02 19:28:28,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-12-02 19:28:28,704 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2018-12-02 19:28:28,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 19:28:28,704 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-12-02 19:28:28,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 19:28:28,704 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-02 19:28:28,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-02 19:28:28,705 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 19:28:28,705 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 19:28:28,705 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 19:28:28,706 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 19:28:28,706 INFO L82 PathProgramCache]: Analyzing trace with hash 328113906, now seen corresponding path program 1 times [2018-12-02 19:28:28,706 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 19:28:28,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 19:28:28,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 19:28:28,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 19:28:28,707 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 19:28:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 19:28:28,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 19:28:28,740 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 19:28:28,740 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 19:28:28,740 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 19:28:28,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 19:28:28,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 19:28:28,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 19:28:28,741 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2018-12-02 19:28:28,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 19:28:28,762 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2018-12-02 19:28:28,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 19:28:28,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-12-02 19:28:28,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 19:28:28,763 INFO L225 Difference]: With dead ends: 63 [2018-12-02 19:28:28,763 INFO L226 Difference]: Without dead ends: 48 [2018-12-02 19:28:28,764 INFO L631 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 [2018-12-02 19:28:28,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-12-02 19:28:28,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-12-02 19:28:28,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-02 19:28:28,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-12-02 19:28:28,769 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2018-12-02 19:28:28,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 19:28:28,770 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-12-02 19:28:28,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 19:28:28,770 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-02 19:28:28,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-02 19:28:28,771 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 19:28:28,771 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 19:28:28,771 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 19:28:28,771 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 19:28:28,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1468837453, now seen corresponding path program 1 times [2018-12-02 19:28:28,771 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 19:28:28,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 19:28:28,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 19:28:28,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 19:28:28,772 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 19:28:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 19:28:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 19:28:28,812 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 19:28:28,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:28:28 BoogieIcfgContainer [2018-12-02 19:28:28,829 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 19:28:28,829 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 19:28:28,829 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 19:28:28,829 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 19:28:28,829 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:28:28" (3/4) ... [2018-12-02 19:28:28,831 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-02 19:28:28,832 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 19:28:28,832 INFO L168 Benchmark]: Toolchain (without parser) took 788.20 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 61.9 MB). Free memory was 958.8 MB in the beginning and 978.6 MB in the end (delta: -19.8 MB). Peak memory consumption was 42.1 MB. Max. memory is 11.5 GB. [2018-12-02 19:28:28,833 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 19:28:28,833 INFO L168 Benchmark]: CACSL2BoogieTranslator took 138.69 ms. Allocated memory is still 1.0 GB. Free memory was 958.8 MB in the beginning and 948.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 19:28:28,834 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.06 ms. Allocated memory is still 1.0 GB. Free memory was 948.1 MB in the beginning and 942.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-02 19:28:28,834 INFO L168 Benchmark]: Boogie Preprocessor took 49.73 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 61.9 MB). Free memory was 942.7 MB in the beginning and 1.1 GB in the end (delta: -109.7 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2018-12-02 19:28:28,834 INFO L168 Benchmark]: RCFGBuilder took 186.20 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: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2018-12-02 19:28:28,835 INFO L168 Benchmark]: TraceAbstraction took 394.14 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 978.6 MB in the end (delta: 54.4 MB). Peak memory consumption was 54.4 MB. Max. memory is 11.5 GB. [2018-12-02 19:28:28,835 INFO L168 Benchmark]: Witness Printer took 2.66 ms. Allocated memory is still 1.1 GB. Free memory is still 978.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 19:28:28,837 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 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 138.69 ms. Allocated memory is still 1.0 GB. Free memory was 958.8 MB in the beginning and 948.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 14.06 ms. Allocated memory is still 1.0 GB. Free memory was 948.1 MB in the beginning and 942.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 49.73 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 61.9 MB). Free memory was 942.7 MB in the beginning and 1.1 GB in the end (delta: -109.7 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 186.20 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: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 394.14 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 978.6 MB in the end (delta: 54.4 MB). Peak memory consumption was 54.4 MB. Max. memory is 11.5 GB. * Witness Printer took 2.66 ms. Allocated memory is still 1.1 GB. Free memory is still 978.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 78, overapproximation of someUnaryFLOAToperation at line 74. Possible FailurePath: [L73] float x = 0.0f; [L74] float y = -0.0f; VAL [x=0] [L75] CALL, EXPR fmax_float(x, y) VAL [\old(x)=0, \old(y)=4286578690] [L44] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0] [L21] __uint32_t w; VAL [\old(x)=0, x=0] [L24] ieee_float_shape_type gf_u; [L25] gf_u.value = (x) [L26] EXPR gf_u.word [L26] (w) = gf_u.word [L29] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=0, w=4286578689, x=0] [L31-L32] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L34-L35] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L37] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L40] return 0; VAL [\old(x)=0, \result=0, w=4286578689, x=0] [L44] RET, EXPR __fpclassify_float(x) VAL [\old(x)=0, \old(y)=4286578690, __fpclassify_float(x)=0, x=0, y=4286578690] [L44] COND TRUE __fpclassify_float(x) == 0 [L45] return y; VAL [\old(x)=0, \old(y)=4286578690, \result=4286578690, x=0, y=4286578690] [L75] RET, EXPR fmax_float(x, y) VAL [fmax_float(x, y)=4286578690, x=0, y=4286578690] [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=4286578690, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=4286578690] [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() VAL [res=4286578690, x=0, y=4286578690] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.0s 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, 0.0s 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 0.1.23-635dfa2 [2018-12-02 19:28:30,143 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 19:28:30,144 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 19:28:30,150 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 19:28:30,150 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 19:28:30,150 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 19:28:30,151 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 19:28:30,152 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 19:28:30,152 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 19:28:30,153 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 19:28:30,153 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 19:28:30,153 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 19:28:30,154 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 19:28:30,154 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 19:28:30,155 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 19:28:30,155 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 19:28:30,155 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 19:28:30,156 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 19:28:30,157 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 19:28:30,158 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 19:28:30,158 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 19:28:30,159 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 19:28:30,160 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 19:28:30,160 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 19:28:30,160 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 19:28:30,161 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 19:28:30,161 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 19:28:30,162 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 19:28:30,162 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 19:28:30,163 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 19:28:30,163 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 19:28:30,163 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 19:28:30,163 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 19:28:30,163 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 19:28:30,164 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 19:28:30,164 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 19:28:30,164 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-02 19:28:30,171 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 19:28:30,172 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 19:28:30,172 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 19:28:30,172 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 19:28:30,172 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 19:28:30,172 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 19:28:30,172 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 19:28:30,172 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 19:28:30,173 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 19:28:30,173 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 19:28:30,173 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 19:28:30,173 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 19:28:30,173 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 19:28:30,173 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 19:28:30,173 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 19:28:30,173 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 19:28:30,174 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 19:28:30,174 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-02 19:28:30,174 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-02 19:28:30,174 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 19:28:30,174 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 19:28:30,174 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 19:28:30,174 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 19:28:30,174 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 19:28:30,174 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 19:28:30,174 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 19:28:30,174 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 19:28:30,174 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 19:28:30,175 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 19:28:30,175 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 19:28:30,175 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 19:28:30,175 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-02 19:28:30,175 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 19:28:30,175 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-02 19:28:30,175 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-02 19:28:30,175 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_b8221dc4-1152-4d22-8350-19f545b002c6/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 -> c8e4dbe5a9ab518912f1108432d43f490ec977d7 [2018-12-02 19:28:30,193 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 19:28:30,200 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 19:28:30,202 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 19:28:30,203 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 19:28:30,203 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 19:28:30,204 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-12-02 19:28:30,238 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/bin-2019/utaipan/data/04994939c/98c97906d5a944dbaeb3a2c1a889cbac/FLAG18930aa8b [2018-12-02 19:28:30,579 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 19:28:30,579 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-12-02 19:28:30,583 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/bin-2019/utaipan/data/04994939c/98c97906d5a944dbaeb3a2c1a889cbac/FLAG18930aa8b [2018-12-02 19:28:30,972 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/bin-2019/utaipan/data/04994939c/98c97906d5a944dbaeb3a2c1a889cbac [2018-12-02 19:28:30,974 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 19:28:30,975 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 19:28:30,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 19:28:30,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 19:28:30,979 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 19:28:30,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:28:30" (1/1) ... [2018-12-02 19:28:30,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@426f976d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:30, skipping insertion in model container [2018-12-02 19:28:30,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:28:30" (1/1) ... [2018-12-02 19:28:30,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 19:28:30,996 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 19:28:31,087 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 19:28:31,090 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 19:28:31,105 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 19:28:31,119 INFO L195 MainTranslator]: Completed translation [2018-12-02 19:28:31,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:31 WrapperNode [2018-12-02 19:28:31,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 19:28:31,120 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 19:28:31,120 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 19:28:31,120 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 19:28:31,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:31" (1/1) ... [2018-12-02 19:28:31,131 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:31" (1/1) ... [2018-12-02 19:28:31,135 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 19:28:31,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 19:28:31,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 19:28:31,135 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 19:28:31,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:31" (1/1) ... [2018-12-02 19:28:31,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:31" (1/1) ... [2018-12-02 19:28:31,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:31" (1/1) ... [2018-12-02 19:28:31,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:31" (1/1) ... [2018-12-02 19:28:31,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:31" (1/1) ... [2018-12-02 19:28:31,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:31" (1/1) ... [2018-12-02 19:28:31,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:31" (1/1) ... [2018-12-02 19:28:31,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 19:28:31,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 19:28:31,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 19:28:31,154 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 19:28:31,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 19:28:31,213 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 19:28:31,213 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 19:28:31,213 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-12-02 19:28:31,213 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-12-02 19:28:31,213 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-12-02 19:28:31,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-12-02 19:28:31,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 19:28:31,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 19:28:31,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 19:28:31,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-02 19:28:31,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 19:28:31,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 19:28:31,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-12-02 19:28:31,214 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-02 19:28:31,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-02 19:28:31,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 19:28:31,349 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 19:28:31,372 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 19:28:31,375 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 19:28:31,375 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-02 19:28:31,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:28:31 BoogieIcfgContainer [2018-12-02 19:28:31,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 19:28:31,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 19:28:31,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 19:28:31,377 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 19:28:31,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:28:30" (1/3) ... [2018-12-02 19:28:31,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d77968c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:28:31, skipping insertion in model container [2018-12-02 19:28:31,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:31" (2/3) ... [2018-12-02 19:28:31,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d77968c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:28:31, skipping insertion in model container [2018-12-02 19:28:31,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:28:31" (3/3) ... [2018-12-02 19:28:31,379 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b_false-unreach-call.c [2018-12-02 19:28:31,385 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 19:28:31,389 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 19:28:31,397 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 19:28:31,413 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 19:28:31,414 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 19:28:31,414 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 19:28:31,414 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 19:28:31,414 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 19:28:31,414 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 19:28:31,414 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 19:28:31,414 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 19:28:31,415 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 19:28:31,425 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-12-02 19:28:31,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-02 19:28:31,429 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 19:28:31,429 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 19:28:31,431 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 19:28:31,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 19:28:31,434 INFO L82 PathProgramCache]: Analyzing trace with hash -849686715, now seen corresponding path program 1 times [2018-12-02 19:28:31,436 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 19:28:31,437 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-12-02 19:28:31,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 19:28:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 19:28:31,483 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 19:28:31,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 19:28:31,494 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 19:28:31,502 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 19:28:31,502 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 19:28:31,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 19:28:31,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 19:28:31,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 19:28:31,513 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-12-02 19:28:31,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 19:28:31,526 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-12-02 19:28:31,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 19:28:31,527 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-12-02 19:28:31,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 19:28:31,533 INFO L225 Difference]: With dead ends: 75 [2018-12-02 19:28:31,533 INFO L226 Difference]: Without dead ends: 38 [2018-12-02 19:28:31,535 INFO L631 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 [2018-12-02 19:28:31,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-02 19:28:31,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-12-02 19:28:31,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-02 19:28:31,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-12-02 19:28:31,559 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2018-12-02 19:28:31,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 19:28:31,559 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-12-02 19:28:31,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 19:28:31,559 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-12-02 19:28:31,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-02 19:28:31,560 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 19:28:31,560 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 19:28:31,560 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 19:28:31,560 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 19:28:31,561 INFO L82 PathProgramCache]: Analyzing trace with hash -2014516036, now seen corresponding path program 1 times [2018-12-02 19:28:31,561 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 19:28:31,561 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-12-02 19:28:31,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 19:28:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 19:28:31,596 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 19:28:31,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 19:28:31,615 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 19:28:31,621 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 19:28:31,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 19:28:31,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 19:28:31,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 19:28:31,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 19:28:31,623 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-12-02 19:28:31,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 19:28:31,642 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-12-02 19:28:31,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 19:28:31,643 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-12-02 19:28:31,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 19:28:31,644 INFO L225 Difference]: With dead ends: 56 [2018-12-02 19:28:31,644 INFO L226 Difference]: Without dead ends: 41 [2018-12-02 19:28:31,645 INFO L631 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 [2018-12-02 19:28:31,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-02 19:28:31,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-02 19:28:31,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-02 19:28:31,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2018-12-02 19:28:31,650 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22 [2018-12-02 19:28:31,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 19:28:31,650 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-12-02 19:28:31,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 19:28:31,650 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2018-12-02 19:28:31,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-02 19:28:31,651 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 19:28:31,651 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 19:28:31,651 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 19:28:31,651 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 19:28:31,651 INFO L82 PathProgramCache]: Analyzing trace with hash -842703294, now seen corresponding path program 1 times [2018-12-02 19:28:31,652 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 19:28:31,652 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-12-02 19:28:31,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 19:28:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 19:28:31,682 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 19:28:31,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 19:28:31,771 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 19:28:31,778 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 19:28:31,778 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-02 19:28:31,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 19:28:31,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 19:28:31,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-02 19:28:31,779 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 8 states. [2018-12-02 19:28:32,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 19:28:32,155 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2018-12-02 19:28:32,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 19:28:32,156 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-12-02 19:28:32,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 19:28:32,157 INFO L225 Difference]: With dead ends: 60 [2018-12-02 19:28:32,157 INFO L226 Difference]: Without dead ends: 40 [2018-12-02 19:28:32,157 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-02 19:28:32,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-02 19:28:32,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-02 19:28:32,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-02 19:28:32,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-12-02 19:28:32,162 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 23 [2018-12-02 19:28:32,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 19:28:32,163 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-12-02 19:28:32,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 19:28:32,163 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-12-02 19:28:32,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-02 19:28:32,164 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 19:28:32,164 INFO L402 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] [2018-12-02 19:28:32,164 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 19:28:32,164 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 19:28:32,164 INFO L82 PathProgramCache]: Analyzing trace with hash 513797078, now seen corresponding path program 1 times [2018-12-02 19:28:32,165 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 19:28:32,165 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/bin-2019/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-12-02 19:28:32,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 19:28:32,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 19:28:32,201 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 19:28:32,210 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 19:28:32,210 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 19:28:32,217 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 19:28:32,217 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 19:28:32,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 19:28:32,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 19:28:32,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 19:28:32,217 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 4 states. [2018-12-02 19:28:32,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 19:28:32,228 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2018-12-02 19:28:32,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 19:28:32,229 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-12-02 19:28:32,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 19:28:32,229 INFO L225 Difference]: With dead ends: 56 [2018-12-02 19:28:32,229 INFO L226 Difference]: Without dead ends: 41 [2018-12-02 19:28:32,230 INFO L631 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 [2018-12-02 19:28:32,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-02 19:28:32,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-02 19:28:32,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-02 19:28:32,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-12-02 19:28:32,233 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 30 [2018-12-02 19:28:32,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 19:28:32,233 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-12-02 19:28:32,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 19:28:32,234 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-12-02 19:28:32,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-02 19:28:32,234 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 19:28:32,234 INFO L402 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] [2018-12-02 19:28:32,234 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 19:28:32,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 19:28:32,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1245379058, now seen corresponding path program 1 times [2018-12-02 19:28:32,235 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 19:28:32,235 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/bin-2019/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-12-02 19:28:32,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 19:28:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 19:28:32,277 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 19:28:32,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 19:28:32,348 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 19:28:32,354 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 19:28:32,355 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-02 19:28:32,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 19:28:32,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 19:28:32,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-02 19:28:32,355 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 8 states. [2018-12-02 19:28:32,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 19:28:32,653 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2018-12-02 19:28:32,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 19:28:32,654 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-12-02 19:28:32,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 19:28:32,654 INFO L225 Difference]: With dead ends: 58 [2018-12-02 19:28:32,654 INFO L226 Difference]: Without dead ends: 35 [2018-12-02 19:28:32,655 INFO L631 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 [2018-12-02 19:28:32,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-02 19:28:32,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-12-02 19:28:32,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-02 19:28:32,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-12-02 19:28:32,658 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 31 [2018-12-02 19:28:32,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 19:28:32,658 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-12-02 19:28:32,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 19:28:32,658 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-12-02 19:28:32,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-02 19:28:32,659 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 19:28:32,659 INFO L402 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] [2018-12-02 19:28:32,659 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 19:28:32,659 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 19:28:32,659 INFO L82 PathProgramCache]: Analyzing trace with hash 45724059, now seen corresponding path program 1 times [2018-12-02 19:28:32,660 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 19:28:32,660 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/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 [2018-12-02 19:28:32,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 19:28:32,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 19:28:32,695 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 19:28:32,737 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-02 19:28:32,737 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 19:28:32,743 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 19:28:32,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 19:28:32,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 19:28:32,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 19:28:32,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-02 19:28:32,744 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 5 states. [2018-12-02 19:28:32,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 19:28:32,795 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-12-02 19:28:32,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 19:28:32,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-12-02 19:28:32,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 19:28:32,796 INFO L225 Difference]: With dead ends: 51 [2018-12-02 19:28:32,797 INFO L226 Difference]: Without dead ends: 35 [2018-12-02 19:28:32,797 INFO L631 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 [2018-12-02 19:28:32,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-02 19:28:32,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-12-02 19:28:32,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-02 19:28:32,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-12-02 19:28:32,801 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2018-12-02 19:28:32,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 19:28:32,801 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-12-02 19:28:32,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 19:28:32,801 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-12-02 19:28:32,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-02 19:28:32,802 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 19:28:32,802 INFO L402 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] [2018-12-02 19:28:32,802 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 19:28:32,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 19:28:32,803 INFO L82 PathProgramCache]: Analyzing trace with hash -763622567, now seen corresponding path program 1 times [2018-12-02 19:28:32,803 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 19:28:32,803 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/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 [2018-12-02 19:28:32,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 19:28:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 19:28:32,841 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 19:28:32,893 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-02 19:28:32,893 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 19:28:32,899 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 19:28:32,900 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-02 19:28:32,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 19:28:32,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 19:28:32,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-02 19:28:32,900 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 8 states. [2018-12-02 19:28:33,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 19:28:33,034 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-12-02 19:28:33,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 19:28:33,035 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-12-02 19:28:33,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 19:28:33,035 INFO L225 Difference]: With dead ends: 38 [2018-12-02 19:28:33,035 INFO L226 Difference]: Without dead ends: 35 [2018-12-02 19:28:33,035 INFO L631 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 [2018-12-02 19:28:33,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-02 19:28:33,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-12-02 19:28:33,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-02 19:28:33,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-12-02 19:28:33,038 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-12-02 19:28:33,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 19:28:33,038 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-12-02 19:28:33,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 19:28:33,038 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-12-02 19:28:33,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-12-02 19:28:33,039 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 19:28:33,039 INFO L402 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] [2018-12-02 19:28:33,039 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 19:28:33,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 19:28:33,039 INFO L82 PathProgramCache]: Analyzing trace with hash -135886477, now seen corresponding path program 1 times [2018-12-02 19:28:33,039 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 19:28:33,040 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/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 [2018-12-02 19:28:33,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 19:28:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 19:28:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 19:28:33,158 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 19:28:33,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:28:33 BoogieIcfgContainer [2018-12-02 19:28:33,183 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 19:28:33,184 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 19:28:33,184 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 19:28:33,184 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 19:28:33,184 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:28:31" (3/4) ... [2018-12-02 19:28:33,185 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-02 19:28:33,225 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b8221dc4-1152-4d22-8350-19f545b002c6/bin-2019/utaipan/witness.graphml [2018-12-02 19:28:33,225 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 19:28:33,226 INFO L168 Benchmark]: Toolchain (without parser) took 2251.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 943.4 MB in the beginning and 876.5 MB in the end (delta: 66.9 MB). Peak memory consumption was 197.4 MB. Max. memory is 11.5 GB. [2018-12-02 19:28:33,227 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 19:28:33,227 INFO L168 Benchmark]: CACSL2BoogieTranslator took 143.48 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 19:28:33,227 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.13 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-02 19:28:33,228 INFO L168 Benchmark]: Boogie Preprocessor took 18.83 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 19:28:33,228 INFO L168 Benchmark]: RCFGBuilder took 221.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -167.2 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-12-02 19:28:33,228 INFO L168 Benchmark]: TraceAbstraction took 1807.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 876.5 MB in the end (delta: 218.0 MB). Peak memory consumption was 218.0 MB. Max. memory is 11.5 GB. [2018-12-02 19:28:33,228 INFO L168 Benchmark]: Witness Printer took 41.71 ms. Allocated memory is still 1.2 GB. Free memory is still 876.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 19:28:33,230 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 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 143.48 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.13 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.83 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 221.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -167.2 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1807.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 876.5 MB in the end (delta: 218.0 MB). Peak memory consumption was 218.0 MB. Max. memory is 11.5 GB. * Witness Printer took 41.71 ms. Allocated memory is still 1.2 GB. Free memory is still 876.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 79]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L73] float x = 0.0f; [L74] float y = -0.0f; VAL [x=0.0, y=0.0] [L75] CALL, EXPR fmax_float(x, y) VAL [\old(x)=0.0, \old(y)=0.0] [L44] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0.0] [L21] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L24] ieee_float_shape_type gf_u; [L25] gf_u.value = (x) [L26] EXPR gf_u.word [L26] (w) = gf_u.word [L29] COND TRUE w == 0x00000000 || w == 0x80000000 [L30] return 2; VAL [\old(x)=0.0, \result=2, w=0, x=0.0] [L44] RET, EXPR __fpclassify_float(x) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(x)=2, x=0.0, y=0.0] [L44] COND FALSE !(__fpclassify_float(x) == 0) [L48] CALL, EXPR __fpclassify_float(y) VAL [\old(x)=0.0] [L21] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L24] ieee_float_shape_type gf_u; [L25] gf_u.value = (x) [L26] EXPR gf_u.word [L26] (w) = gf_u.word [L29] COND TRUE w == 0x00000000 || w == 0x80000000 [L30] return 2; VAL [\old(x)=0.0, \result=2, w=2147483648, x=0.0] [L48] RET, EXPR __fpclassify_float(y) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(y)=2, x=0.0, y=0.0] [L48] COND FALSE !(__fpclassify_float(y) == 0) [L51] EXPR x > y ? x : y VAL [\old(x)=0.0, \old(y)=0.0, x=0.0, x > y ? x : y=0.0, y=0.0] [L51] return x > y ? x : y; [L75] RET, EXPR fmax_float(x, y) VAL [fmax_float(x, y)=0.0, x=0.0, y=0.0] [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=0.0, res == 0.0f && __signbit_float(res) == 0=1, x=0.0, y=0.0] [L78] CALL, EXPR __signbit_float(res) VAL [\old(x)=0.0] [L55] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L58] ieee_float_shape_type gf_u; [L59] gf_u.value = (x) [L60] EXPR gf_u.word [L60] (w) = gf_u.word [L63] return (w & 0x80000000) != 0; VAL [\old(x)=0.0, \result=1, w=2147483648, x=0.0] [L78] RET, EXPR __signbit_float(res) VAL [__signbit_float(res)=1, res=0.0, res == 0.0f && __signbit_float(res) == 0=1, x=0.0, y=0.0] [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [__signbit_float(res)=1, res=0.0, res == 0.0f && __signbit_float(res) == 0=0, x=0.0, y=0.0] [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() VAL [res=0.0, x=0.0, y=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. UNSAFE Result, 1.7s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 272 SDtfs, 111 SDslu, 739 SDs, 0 SdLazy, 268 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 196 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 231 NumberOfCodeBlocks, 231 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 184 ConstructedInterpolants, 12 QuantifiedInterpolants, 13625 SizeOfPredicates, 15 NumberOfNonLiveVariables, 539 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 24/24 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...