./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/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 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 ......................................................................................................................................................................................................................................................................................................................................................................................................... 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_7f747c67-c3db-443f-96c8-02a13f203f7a/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/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 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 06:52:32,305 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 06:52:32,306 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 06:52:32,312 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 06:52:32,313 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 06:52:32,313 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 06:52:32,314 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 06:52:32,315 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 06:52:32,315 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 06:52:32,316 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 06:52:32,316 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 06:52:32,316 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 06:52:32,317 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 06:52:32,317 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 06:52:32,318 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 06:52:32,318 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 06:52:32,319 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 06:52:32,320 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 06:52:32,321 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 06:52:32,321 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 06:52:32,322 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 06:52:32,323 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 06:52:32,324 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 06:52:32,324 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 06:52:32,324 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 06:52:32,324 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 06:52:32,325 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 06:52:32,325 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 06:52:32,326 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 06:52:32,326 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 06:52:32,326 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 06:52:32,327 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 06:52:32,327 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 06:52:32,327 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 06:52:32,327 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 06:52:32,328 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 06:52:32,328 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-02 06:52:32,335 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 06:52:32,335 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 06:52:32,336 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 06:52:32,336 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 06:52:32,336 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 06:52:32,336 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 06:52:32,336 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 06:52:32,336 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 06:52:32,336 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 06:52:32,336 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 06:52:32,336 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 06:52:32,336 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 06:52:32,336 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 06:52:32,337 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 06:52:32,337 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 06:52:32,337 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 06:52:32,337 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 06:52:32,337 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 06:52:32,337 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 06:52:32,337 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 06:52:32,337 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 06:52:32,337 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 06:52:32,338 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 06:52:32,338 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 06:52:32,338 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 06:52:32,338 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 06:52:32,338 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 06:52:32,338 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 06:52:32,338 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 06:52:32,338 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 06:52:32,338 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 06:52:32,338 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 06:52:32,338 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 06:52:32,339 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 06:52:32,339 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 06:52:32,339 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-02 06:52:32,339 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_7f747c67-c3db-443f-96c8-02a13f203f7a/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 -> 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 [2018-12-02 06:52:32,356 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 06:52:32,362 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 06:52:32,364 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 06:52:32,365 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 06:52:32,365 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 06:52:32,366 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-12-02 06:52:32,401 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/bin-2019/utaipan/data/4fb34ffcb/838222c192d34676901185504ac4f8f4/FLAGe5707c0f2 [2018-12-02 06:52:32,835 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 06:52:32,835 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-12-02 06:52:32,839 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/bin-2019/utaipan/data/4fb34ffcb/838222c192d34676901185504ac4f8f4/FLAGe5707c0f2 [2018-12-02 06:52:32,847 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/bin-2019/utaipan/data/4fb34ffcb/838222c192d34676901185504ac4f8f4 [2018-12-02 06:52:32,848 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 06:52:32,849 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 06:52:32,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 06:52:32,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 06:52:32,852 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 06:52:32,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:52:32" (1/1) ... [2018-12-02 06:52:32,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47e9f86c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:32, skipping insertion in model container [2018-12-02 06:52:32,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:52:32" (1/1) ... [2018-12-02 06:52:32,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 06:52:32,867 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 06:52:32,958 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 06:52:32,960 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 06:52:32,974 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 06:52:32,985 INFO L195 MainTranslator]: Completed translation [2018-12-02 06:52:32,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:32 WrapperNode [2018-12-02 06:52:32,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 06:52:32,986 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 06:52:32,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 06:52:32,986 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 06:52:32,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:32" (1/1) ... [2018-12-02 06:52:32,996 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:32" (1/1) ... [2018-12-02 06:52:33,029 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 06:52:33,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 06:52:33,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 06:52:33,029 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 06:52:33,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:32" (1/1) ... [2018-12-02 06:52:33,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:32" (1/1) ... [2018-12-02 06:52:33,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:32" (1/1) ... [2018-12-02 06:52:33,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:32" (1/1) ... [2018-12-02 06:52:33,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:32" (1/1) ... [2018-12-02 06:52:33,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:32" (1/1) ... [2018-12-02 06:52:33,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:32" (1/1) ... [2018-12-02 06:52:33,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 06:52:33,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 06:52:33,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 06:52:33,046 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 06:52:33,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/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 06:52:33,077 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-12-02 06:52:33,078 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-12-02 06:52:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 06:52:33,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 06:52:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-02 06:52:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 06:52:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 06:52:33,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 06:52:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 06:52:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 06:52:33,078 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 06:52:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-12-02 06:52:33,079 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-12-02 06:52:33,079 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-12-02 06:52:33,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-12-02 06:52:33,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 06:52:33,226 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 06:52:33,227 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-02 06:52:33,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:52:33 BoogieIcfgContainer [2018-12-02 06:52:33,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 06:52:33,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 06:52:33,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 06:52:33,230 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 06:52:33,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:52:32" (1/3) ... [2018-12-02 06:52:33,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c585717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:52:33, skipping insertion in model container [2018-12-02 06:52:33,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:32" (2/3) ... [2018-12-02 06:52:33,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c585717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:52:33, skipping insertion in model container [2018-12-02 06:52:33,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:52:33" (3/3) ... [2018-12-02 06:52:33,232 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250_true-unreach-call.c [2018-12-02 06:52:33,239 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 06:52:33,243 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 06:52:33,252 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 06:52:33,271 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 06:52:33,271 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 06:52:33,271 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 06:52:33,271 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 06:52:33,271 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 06:52:33,271 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 06:52:33,271 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 06:52:33,272 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 06:52:33,282 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-12-02 06:52:33,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-02 06:52:33,286 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:52:33,287 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 06:52:33,288 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:52:33,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:52:33,291 INFO L82 PathProgramCache]: Analyzing trace with hash -2093385797, now seen corresponding path program 1 times [2018-12-02 06:52:33,293 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 06:52:33,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:52:33,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:52:33,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:52:33,321 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 06:52:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:52:33,369 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 06:52:33,371 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:52:33,371 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 06:52:33,371 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 06:52:33,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 06:52:33,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 06:52:33,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 06:52:33,383 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2018-12-02 06:52:33,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:52:33,397 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2018-12-02 06:52:33,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 06:52:33,398 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-12-02 06:52:33,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:52:33,403 INFO L225 Difference]: With dead ends: 71 [2018-12-02 06:52:33,404 INFO L226 Difference]: Without dead ends: 36 [2018-12-02 06:52:33,406 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 06:52:33,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-02 06:52:33,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-02 06:52:33,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-02 06:52:33,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-12-02 06:52:33,430 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2018-12-02 06:52:33,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:52:33,430 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-12-02 06:52:33,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 06:52:33,430 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-12-02 06:52:33,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-02 06:52:33,431 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:52:33,431 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:52:33,431 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:52:33,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:52:33,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1590914468, now seen corresponding path program 1 times [2018-12-02 06:52:33,432 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 06:52:33,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:52:33,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:52:33,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:52:33,433 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 06:52:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:52:33,480 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 06:52:33,481 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:52:33,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 06:52:33,481 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 06:52:33,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 06:52:33,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 06:52:33,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 06:52:33,482 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-12-02 06:52:33,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:52:33,498 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2018-12-02 06:52:33,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 06:52:33,499 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-12-02 06:52:33,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:52:33,500 INFO L225 Difference]: With dead ends: 51 [2018-12-02 06:52:33,500 INFO L226 Difference]: Without dead ends: 40 [2018-12-02 06:52:33,501 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 06:52:33,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-02 06:52:33,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-02 06:52:33,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-02 06:52:33,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-12-02 06:52:33,506 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2018-12-02 06:52:33,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:52:33,506 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-12-02 06:52:33,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 06:52:33,506 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-12-02 06:52:33,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-02 06:52:33,507 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:52:33,507 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:52:33,507 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:52:33,508 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:52:33,508 INFO L82 PathProgramCache]: Analyzing trace with hash 87255330, now seen corresponding path program 1 times [2018-12-02 06:52:33,508 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 06:52:33,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:52:33,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:52:33,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:52:33,509 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 06:52:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:52:33,542 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 06:52:33,542 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:52:33,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 06:52:33,542 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 06:52:33,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 06:52:33,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 06:52:33,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 06:52:33,543 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-12-02 06:52:33,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:52:33,556 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2018-12-02 06:52:33,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 06:52:33,557 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-12-02 06:52:33,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:52:33,557 INFO L225 Difference]: With dead ends: 55 [2018-12-02 06:52:33,557 INFO L226 Difference]: Without dead ends: 44 [2018-12-02 06:52:33,558 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 06:52:33,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-02 06:52:33,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-12-02 06:52:33,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-02 06:52:33,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-12-02 06:52:33,561 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2018-12-02 06:52:33,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:52:33,562 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-12-02 06:52:33,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 06:52:33,562 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-12-02 06:52:33,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-02 06:52:33,562 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:52:33,562 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:52:33,563 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:52:33,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:52:33,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1594807139, now seen corresponding path program 1 times [2018-12-02 06:52:33,563 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 06:52:33,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:52:33,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:52:33,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:52:33,564 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 06:52:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 06:52:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 06:52:33,600 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 06:52:33,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 06:52:33 BoogieIcfgContainer [2018-12-02 06:52:33,617 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 06:52:33,617 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 06:52:33,617 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 06:52:33,618 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 06:52:33,618 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:52:33" (3/4) ... [2018-12-02 06:52:33,620 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-02 06:52:33,620 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 06:52:33,621 INFO L168 Benchmark]: Toolchain (without parser) took 772.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 957.1 MB in the beginning and 1.0 GB in the end (delta: -88.1 MB). Peak memory consumption was 35.1 MB. Max. memory is 11.5 GB. [2018-12-02 06:52:33,622 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 06:52:33,622 INFO L168 Benchmark]: CACSL2BoogieTranslator took 136.20 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 946.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 06:52:33,622 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -171.6 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2018-12-02 06:52:33,623 INFO L168 Benchmark]: Boogie Preprocessor took 16.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-12-02 06:52:33,623 INFO L168 Benchmark]: RCFGBuilder took 181.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2018-12-02 06:52:33,624 INFO L168 Benchmark]: TraceAbstraction took 389.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 50.5 MB). Peak memory consumption was 50.5 MB. Max. memory is 11.5 GB. [2018-12-02 06:52:33,624 INFO L168 Benchmark]: Witness Printer took 2.86 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 06:52:33,626 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 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 136.20 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 946.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -171.6 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 181.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 389.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 50.5 MB). Peak memory consumption was 50.5 MB. Max. memory is 11.5 GB. * Witness Printer took 2.86 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 65]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 54, overapproximation of someBinaryArithmeticFLOAToperation at line 60. Possible FailurePath: [L60] float x = 0.0f / 0.0f; [L61] float y = 0.0f / 0.0f; [L62] CALL, EXPR fmax_float(x, y) VAL [\old(x)=2139095045, \old(y)=2139095042] [L43] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=2139095045] [L20] __uint32_t w; VAL [\old(x)=2139095045, x=2139095045] [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (w) = gf_u.word [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=2139095045, w=2139095041, x=2139095045] [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=2139095045, w=2139095041, x=2139095045] [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=2139095045, w=2139095041, x=2139095045] [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] return 0; VAL [\old(x)=2139095045, \result=0, w=2139095041, x=2139095045] [L43] RET, EXPR __fpclassify_float(x) VAL [\old(x)=2139095045, \old(y)=2139095042, __fpclassify_float(x)=0, x=2139095045, y=2139095042] [L43] COND TRUE __fpclassify_float(x) == 0 [L44] return y; VAL [\old(x)=2139095045, \old(y)=2139095042, \result=2139095042, x=2139095045, y=2139095042] [L62] RET, EXPR fmax_float(x, y) VAL [fmax_float(x, y)=2139095042, x=2139095045, y=2139095042] [L62] float res = fmax_float(x, y); [L64] CALL, EXPR isnan_float(res) VAL [\old(x)=2139095042] [L54] return x != x; VAL [\old(x)=2139095042, \result=0, x=2139095042] [L64] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, res=2139095042, x=2139095045, y=2139095042] [L64] COND TRUE !isnan_float(res) [L65] __VERIFIER_error() VAL [res=2139095042, x=2139095045, y=2139095042] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 129 SDtfs, 0 SDslu, 152 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=40occurred 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, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 2582 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 06:52:35,039 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 06:52:35,040 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 06:52:35,046 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 06:52:35,046 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 06:52:35,047 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 06:52:35,047 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 06:52:35,048 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 06:52:35,049 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 06:52:35,049 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 06:52:35,050 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 06:52:35,050 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 06:52:35,050 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 06:52:35,051 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 06:52:35,051 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 06:52:35,052 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 06:52:35,052 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 06:52:35,053 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 06:52:35,054 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 06:52:35,054 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 06:52:35,055 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 06:52:35,055 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 06:52:35,056 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 06:52:35,057 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 06:52:35,057 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 06:52:35,057 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 06:52:35,058 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 06:52:35,058 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 06:52:35,058 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 06:52:35,059 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 06:52:35,059 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 06:52:35,059 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 06:52:35,060 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 06:52:35,060 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 06:52:35,060 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 06:52:35,060 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 06:52:35,061 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-02 06:52:35,068 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 06:52:35,068 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 06:52:35,068 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 06:52:35,068 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 06:52:35,069 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 06:52:35,069 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 06:52:35,069 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 06:52:35,069 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 06:52:35,069 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 06:52:35,069 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 06:52:35,069 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 06:52:35,070 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 06:52:35,070 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 06:52:35,070 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 06:52:35,070 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 06:52:35,070 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 06:52:35,070 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 06:52:35,070 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-02 06:52:35,070 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-02 06:52:35,070 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 06:52:35,070 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 06:52:35,071 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 06:52:35,071 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 06:52:35,071 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 06:52:35,071 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 06:52:35,071 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 06:52:35,071 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 06:52:35,071 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 06:52:35,071 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 06:52:35,071 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 06:52:35,071 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 06:52:35,071 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-02 06:52:35,072 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 06:52:35,072 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-02 06:52:35,072 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-02 06:52:35,072 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_7f747c67-c3db-443f-96c8-02a13f203f7a/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 -> 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 [2018-12-02 06:52:35,092 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 06:52:35,101 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 06:52:35,104 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 06:52:35,105 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 06:52:35,105 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 06:52:35,106 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-12-02 06:52:35,154 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/bin-2019/utaipan/data/ec0598950/8627da35aa7e40acb705debaa0180bef/FLAG67e708b4f [2018-12-02 06:52:35,446 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 06:52:35,446 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-12-02 06:52:35,450 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/bin-2019/utaipan/data/ec0598950/8627da35aa7e40acb705debaa0180bef/FLAG67e708b4f [2018-12-02 06:52:35,459 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/bin-2019/utaipan/data/ec0598950/8627da35aa7e40acb705debaa0180bef [2018-12-02 06:52:35,460 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 06:52:35,461 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 06:52:35,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 06:52:35,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 06:52:35,464 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 06:52:35,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:52:35" (1/1) ... [2018-12-02 06:52:35,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@284ba15b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:35, skipping insertion in model container [2018-12-02 06:52:35,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:52:35" (1/1) ... [2018-12-02 06:52:35,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 06:52:35,482 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 06:52:35,585 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 06:52:35,589 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 06:52:35,606 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 06:52:35,622 INFO L195 MainTranslator]: Completed translation [2018-12-02 06:52:35,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:35 WrapperNode [2018-12-02 06:52:35,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 06:52:35,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 06:52:35,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 06:52:35,623 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 06:52:35,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:35" (1/1) ... [2018-12-02 06:52:35,634 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:35" (1/1) ... [2018-12-02 06:52:35,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 06:52:35,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 06:52:35,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 06:52:35,638 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 06:52:35,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:35" (1/1) ... [2018-12-02 06:52:35,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:35" (1/1) ... [2018-12-02 06:52:35,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:35" (1/1) ... [2018-12-02 06:52:35,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:35" (1/1) ... [2018-12-02 06:52:35,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:35" (1/1) ... [2018-12-02 06:52:35,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:35" (1/1) ... [2018-12-02 06:52:35,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:35" (1/1) ... [2018-12-02 06:52:35,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 06:52:35,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 06:52:35,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 06:52:35,658 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 06:52:35,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/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 06:52:35,723 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-12-02 06:52:35,723 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-12-02 06:52:35,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 06:52:35,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 06:52:35,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 06:52:35,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-02 06:52:35,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 06:52:35,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 06:52:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-12-02 06:52:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 06:52:35,724 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 06:52:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-12-02 06:52:35,724 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-12-02 06:52:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-12-02 06:52:35,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-12-02 06:52:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 06:52:35,844 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:52:35,861 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 06:52:35,861 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-02 06:52:35,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:52:35 BoogieIcfgContainer [2018-12-02 06:52:35,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 06:52:35,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 06:52:35,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 06:52:35,863 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 06:52:35,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:52:35" (1/3) ... [2018-12-02 06:52:35,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a06cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:52:35, skipping insertion in model container [2018-12-02 06:52:35,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:35" (2/3) ... [2018-12-02 06:52:35,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a06cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:52:35, skipping insertion in model container [2018-12-02 06:52:35,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:52:35" (3/3) ... [2018-12-02 06:52:35,865 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250_true-unreach-call.c [2018-12-02 06:52:35,871 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 06:52:35,874 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 06:52:35,883 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 06:52:35,899 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 06:52:35,900 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 06:52:35,900 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 06:52:35,900 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 06:52:35,900 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 06:52:35,900 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 06:52:35,900 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 06:52:35,900 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 06:52:35,900 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 06:52:35,911 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-12-02 06:52:35,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-02 06:52:35,915 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:52:35,916 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:52:35,917 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:52:35,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:52:35,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1373398522, now seen corresponding path program 1 times [2018-12-02 06:52:35,923 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 06:52:35,923 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/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 06:52:35,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:52:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:52:35,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:52:35,979 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 06:52:35,979 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 06:52:35,987 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:52:35,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 06:52:35,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 06:52:35,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 06:52:35,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 06:52:35,998 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2018-12-02 06:52:36,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:52:36,011 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2018-12-02 06:52:36,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 06:52:36,012 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-12-02 06:52:36,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:52:36,017 INFO L225 Difference]: With dead ends: 65 [2018-12-02 06:52:36,018 INFO L226 Difference]: Without dead ends: 33 [2018-12-02 06:52:36,020 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 06:52:36,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-02 06:52:36,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-12-02 06:52:36,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-02 06:52:36,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2018-12-02 06:52:36,044 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 24 [2018-12-02 06:52:36,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:52:36,044 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2018-12-02 06:52:36,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 06:52:36,044 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2018-12-02 06:52:36,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-02 06:52:36,045 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:52:36,045 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] [2018-12-02 06:52:36,045 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:52:36,046 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:52:36,046 INFO L82 PathProgramCache]: Analyzing trace with hash 570225154, now seen corresponding path program 1 times [2018-12-02 06:52:36,046 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 06:52:36,046 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/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 06:52:36,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:52:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:52:36,082 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:52:36,101 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 06:52:36,102 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 06:52:36,108 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:52:36,108 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 06:52:36,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 06:52:36,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 06:52:36,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 06:52:36,110 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 4 states. [2018-12-02 06:52:36,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:52:36,130 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2018-12-02 06:52:36,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 06:52:36,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-12-02 06:52:36,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:52:36,132 INFO L225 Difference]: With dead ends: 46 [2018-12-02 06:52:36,132 INFO L226 Difference]: Without dead ends: 36 [2018-12-02 06:52:36,133 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 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 06:52:36,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-02 06:52:36,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-02 06:52:36,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-02 06:52:36,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-02 06:52:36,138 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 25 [2018-12-02 06:52:36,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:52:36,138 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-02 06:52:36,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 06:52:36,138 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-02 06:52:36,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-02 06:52:36,139 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:52:36,139 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 06:52:36,139 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:52:36,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:52:36,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1732831305, now seen corresponding path program 1 times [2018-12-02 06:52:36,140 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 06:52:36,140 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/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 06:52:36,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:52:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:52:36,183 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:52:36,196 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 06:52:36,196 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 06:52:36,203 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:52:36,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 06:52:36,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 06:52:36,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 06:52:36,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 06:52:36,204 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-12-02 06:52:36,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:52:36,227 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-12-02 06:52:36,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 06:52:36,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-12-02 06:52:36,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:52:36,228 INFO L225 Difference]: With dead ends: 49 [2018-12-02 06:52:36,228 INFO L226 Difference]: Without dead ends: 39 [2018-12-02 06:52:36,229 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 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 06:52:36,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-02 06:52:36,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-02 06:52:36,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-02 06:52:36,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-02 06:52:36,234 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 26 [2018-12-02 06:52:36,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:52:36,234 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-02 06:52:36,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 06:52:36,235 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-02 06:52:36,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-02 06:52:36,235 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:52:36,236 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:52:36,236 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:52:36,236 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:52:36,236 INFO L82 PathProgramCache]: Analyzing trace with hash -2054695706, now seen corresponding path program 1 times [2018-12-02 06:52:36,236 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 06:52:36,237 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/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 06:52:36,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:52:36,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:52:36,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:52:36,282 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 06:52:36,282 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 06:52:36,290 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:52:36,290 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 06:52:36,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 06:52:36,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 06:52:36,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 06:52:36,291 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-12-02 06:52:36,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:52:36,312 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-12-02 06:52:36,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 06:52:36,312 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-12-02 06:52:36,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:52:36,313 INFO L225 Difference]: With dead ends: 49 [2018-12-02 06:52:36,313 INFO L226 Difference]: Without dead ends: 39 [2018-12-02 06:52:36,314 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 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 06:52:36,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-02 06:52:36,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-02 06:52:36,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-02 06:52:36,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-02 06:52:36,318 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 27 [2018-12-02 06:52:36,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:52:36,319 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-02 06:52:36,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 06:52:36,319 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-02 06:52:36,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-02 06:52:36,320 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:52:36,320 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:52:36,320 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:52:36,320 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:52:36,320 INFO L82 PathProgramCache]: Analyzing trace with hash -382560787, now seen corresponding path program 1 times [2018-12-02 06:52:36,320 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 06:52:36,320 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/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 06:52:36,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:52:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:52:36,359 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:52:36,369 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 06:52:36,369 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 06:52:36,377 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:52:36,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 06:52:36,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 06:52:36,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 06:52:36,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 06:52:36,377 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-12-02 06:52:36,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:52:36,394 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-12-02 06:52:36,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 06:52:36,394 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-12-02 06:52:36,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:52:36,395 INFO L225 Difference]: With dead ends: 49 [2018-12-02 06:52:36,395 INFO L226 Difference]: Without dead ends: 39 [2018-12-02 06:52:36,395 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 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 06:52:36,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-02 06:52:36,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-02 06:52:36,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-02 06:52:36,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-02 06:52:36,398 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 28 [2018-12-02 06:52:36,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:52:36,398 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-02 06:52:36,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 06:52:36,399 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-02 06:52:36,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-02 06:52:36,399 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:52:36,399 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:52:36,399 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:52:36,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:52:36,400 INFO L82 PathProgramCache]: Analyzing trace with hash -675963794, now seen corresponding path program 1 times [2018-12-02 06:52:36,400 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 06:52:36,400 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/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 06:52:36,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:52:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:52:36,438 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:52:36,544 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 06:52:36,544 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 06:52:36,553 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:52:36,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-02 06:52:36,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-02 06:52:36,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-02 06:52:36,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-02 06:52:36,554 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 9 states. [2018-12-02 06:52:36,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:52:36,716 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2018-12-02 06:52:36,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-02 06:52:36,717 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-12-02 06:52:36,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:52:36,718 INFO L225 Difference]: With dead ends: 43 [2018-12-02 06:52:36,718 INFO L226 Difference]: Without dead ends: 36 [2018-12-02 06:52:36,718 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-12-02 06:52:36,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-02 06:52:36,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2018-12-02 06:52:36,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-02 06:52:36,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2018-12-02 06:52:36,723 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 28 [2018-12-02 06:52:36,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:52:36,723 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2018-12-02 06:52:36,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-02 06:52:36,723 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2018-12-02 06:52:36,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-02 06:52:36,724 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:52:36,724 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] [2018-12-02 06:52:36,725 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:52:36,725 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:52:36,725 INFO L82 PathProgramCache]: Analyzing trace with hash 61144778, now seen corresponding path program 1 times [2018-12-02 06:52:36,725 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 06:52:36,726 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/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 06:52:36,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:52:36,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:52:36,763 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:52:36,774 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 06:52:36,774 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 06:52:36,781 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:52:36,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 06:52:36,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 06:52:36,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 06:52:36,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 06:52:36,782 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 4 states. [2018-12-02 06:52:36,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:52:36,794 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-12-02 06:52:36,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 06:52:36,795 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-12-02 06:52:36,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:52:36,795 INFO L225 Difference]: With dead ends: 46 [2018-12-02 06:52:36,795 INFO L226 Difference]: Without dead ends: 36 [2018-12-02 06:52:36,796 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 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 06:52:36,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-02 06:52:36,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-02 06:52:36,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-02 06:52:36,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-12-02 06:52:36,799 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 33 [2018-12-02 06:52:36,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:52:36,799 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-12-02 06:52:36,799 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 06:52:36,799 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-12-02 06:52:36,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-02 06:52:36,800 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:52:36,800 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, 1, 1, 1] [2018-12-02 06:52:36,800 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:52:36,800 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:52:36,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1308604645, now seen corresponding path program 1 times [2018-12-02 06:52:36,800 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 06:52:36,800 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/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 06:52:36,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:52:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:52:36,839 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:52:36,848 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 06:52:36,848 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 06:52:36,855 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:52:36,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 06:52:36,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 06:52:36,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 06:52:36,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 06:52:36,856 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-12-02 06:52:36,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:52:36,870 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2018-12-02 06:52:36,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 06:52:36,870 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-12-02 06:52:36,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:52:36,871 INFO L225 Difference]: With dead ends: 49 [2018-12-02 06:52:36,871 INFO L226 Difference]: Without dead ends: 39 [2018-12-02 06:52:36,871 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 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 06:52:36,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-02 06:52:36,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-02 06:52:36,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-02 06:52:36,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-12-02 06:52:36,874 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 34 [2018-12-02 06:52:36,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:52:36,874 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-12-02 06:52:36,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 06:52:36,874 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-12-02 06:52:36,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-02 06:52:36,875 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:52:36,875 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] [2018-12-02 06:52:36,875 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:52:36,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:52:36,875 INFO L82 PathProgramCache]: Analyzing trace with hash 922408263, now seen corresponding path program 1 times [2018-12-02 06:52:36,876 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 06:52:36,876 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/bin-2019/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-12-02 06:52:36,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:52:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:52:36,917 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:52:37,029 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 06:52:37,029 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 06:52:37,036 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:52:37,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-12-02 06:52:37,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-02 06:52:37,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-02 06:52:37,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-12-02 06:52:37,037 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 10 states. [2018-12-02 06:52:37,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:52:37,235 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2018-12-02 06:52:37,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-02 06:52:37,236 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2018-12-02 06:52:37,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:52:37,237 INFO L225 Difference]: With dead ends: 44 [2018-12-02 06:52:37,237 INFO L226 Difference]: Without dead ends: 36 [2018-12-02 06:52:37,237 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-12-02 06:52:37,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-02 06:52:37,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-02 06:52:37,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-02 06:52:37,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-12-02 06:52:37,240 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 35 [2018-12-02 06:52:37,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:52:37,240 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-12-02 06:52:37,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-02 06:52:37,241 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-12-02 06:52:37,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-02 06:52:37,241 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:52:37,241 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] [2018-12-02 06:52:37,241 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:52:37,241 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:52:37,242 INFO L82 PathProgramCache]: Analyzing trace with hash 221343685, now seen corresponding path program 1 times [2018-12-02 06:52:37,242 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 06:52:37,242 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/bin-2019/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-12-02 06:52:37,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:52:37,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:52:37,282 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:52:37,343 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 06:52:37,343 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 06:52:37,350 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:52:37,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 06:52:37,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 06:52:37,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 06:52:37,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-02 06:52:37,351 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 5 states. [2018-12-02 06:52:37,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:52:37,428 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2018-12-02 06:52:37,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 06:52:37,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-12-02 06:52:37,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:52:37,430 INFO L225 Difference]: With dead ends: 46 [2018-12-02 06:52:37,430 INFO L226 Difference]: Without dead ends: 33 [2018-12-02 06:52:37,430 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 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 06:52:37,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-02 06:52:37,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-12-02 06:52:37,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-02 06:52:37,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-12-02 06:52:37,433 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-12-02 06:52:37,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:52:37,434 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-12-02 06:52:37,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 06:52:37,434 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-12-02 06:52:37,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-02 06:52:37,434 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:52:37,434 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, 1, 1, 1, 1] [2018-12-02 06:52:37,435 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:52:37,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:52:37,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1994775826, now seen corresponding path program 1 times [2018-12-02 06:52:37,435 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 06:52:37,435 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/bin-2019/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-12-02 06:52:37,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:52:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:52:37,468 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:52:37,475 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 06:52:37,475 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 06:52:37,482 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:52:37,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 06:52:37,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 06:52:37,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 06:52:37,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 06:52:37,482 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-12-02 06:52:37,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:52:37,492 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-12-02 06:52:37,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 06:52:37,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-12-02 06:52:37,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:52:37,493 INFO L225 Difference]: With dead ends: 46 [2018-12-02 06:52:37,493 INFO L226 Difference]: Without dead ends: 35 [2018-12-02 06:52:37,493 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 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 06:52:37,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-02 06:52:37,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-12-02 06:52:37,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-02 06:52:37,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-12-02 06:52:37,497 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-12-02 06:52:37,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:52:37,497 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-12-02 06:52:37,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 06:52:37,497 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-12-02 06:52:37,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-02 06:52:37,498 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:52:37,498 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, 1, 1, 1, 1, 1] [2018-12-02 06:52:37,498 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:52:37,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:52:37,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1330109311, now seen corresponding path program 1 times [2018-12-02 06:52:37,499 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 06:52:37,499 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/bin-2019/utaipan/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-12-02 06:52:37,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:52:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:52:37,535 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:52:37,545 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 06:52:37,545 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 06:52:37,552 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:52:37,552 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 06:52:37,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 06:52:37,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 06:52:37,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 06:52:37,553 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-12-02 06:52:37,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:52:37,561 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-12-02 06:52:37,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 06:52:37,562 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-12-02 06:52:37,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:52:37,562 INFO L225 Difference]: With dead ends: 46 [2018-12-02 06:52:37,562 INFO L226 Difference]: Without dead ends: 35 [2018-12-02 06:52:37,563 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 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 06:52:37,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-02 06:52:37,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-12-02 06:52:37,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-02 06:52:37,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-12-02 06:52:37,565 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 36 [2018-12-02 06:52:37,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:52:37,565 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-12-02 06:52:37,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 06:52:37,565 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-12-02 06:52:37,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-02 06:52:37,566 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:52:37,566 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, 1, 1, 1, 1, 1] [2018-12-02 06:52:37,566 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:52:37,566 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:52:37,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1036706304, now seen corresponding path program 1 times [2018-12-02 06:52:37,567 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 06:52:37,567 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/bin-2019/utaipan/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2018-12-02 06:52:37,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:52:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:52:37,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:52:37,686 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 06:52:37,686 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 06:52:37,693 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:52:37,693 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-02 06:52:37,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-02 06:52:37,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-02 06:52:37,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-02 06:52:37,694 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 9 states. [2018-12-02 06:52:37,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:52:37,826 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-12-02 06:52:37,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-02 06:52:37,826 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2018-12-02 06:52:37,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:52:37,827 INFO L225 Difference]: With dead ends: 33 [2018-12-02 06:52:37,827 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 06:52:37,827 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-12-02 06:52:37,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 06:52:37,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 06:52:37,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 06:52:37,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 06:52:37,828 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2018-12-02 06:52:37,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:52:37,828 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 06:52:37,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-02 06:52:37,828 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 06:52:37,828 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 06:52:37,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-02 06:52:37,928 INFO L448 ceAbstractionStarter]: For program point isnan_floatFINAL(line 54) no Hoare annotation was computed. [2018-12-02 06:52:37,928 INFO L451 ceAbstractionStarter]: At program point isnan_floatENTRY(line 54) the Hoare annotation is: true [2018-12-02 06:52:37,929 INFO L448 ceAbstractionStarter]: For program point isnan_floatEXIT(line 54) no Hoare annotation was computed. [2018-12-02 06:52:37,929 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-02 06:52:37,929 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-02 06:52:37,929 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-02 06:52:37,929 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-02 06:52:37,929 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-02 06:52:37,929 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-02 06:52:37,929 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-02 06:52:37,929 INFO L448 ceAbstractionStarter]: For program point L65(line 65) no Hoare annotation was computed. [2018-12-02 06:52:37,929 INFO L444 ceAbstractionStarter]: At program point L64(line 64) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (and (= main_~res~0 .cse0) (= main_~y~0 .cse0))) [2018-12-02 06:52:37,929 INFO L448 ceAbstractionStarter]: For program point L64-1(lines 64 67) no Hoare annotation was computed. [2018-12-02 06:52:37,929 INFO L444 ceAbstractionStarter]: At program point L62(line 62) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (and (= main_~y~0 .cse0) (= main_~x~0 .cse0))) [2018-12-02 06:52:37,929 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 56 70) the Hoare annotation is: true [2018-12-02 06:52:37,929 INFO L448 ceAbstractionStarter]: For program point L62-1(line 62) no Hoare annotation was computed. [2018-12-02 06:52:37,929 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 56 70) no Hoare annotation was computed. [2018-12-02 06:52:37,929 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 56 70) no Hoare annotation was computed. [2018-12-02 06:52:37,929 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 65) no Hoare annotation was computed. [2018-12-02 06:52:37,929 INFO L448 ceAbstractionStarter]: For program point fmax_floatEXIT(lines 42 51) no Hoare annotation was computed. [2018-12-02 06:52:37,930 INFO L451 ceAbstractionStarter]: At program point fmax_floatENTRY(lines 42 51) the Hoare annotation is: true [2018-12-02 06:52:37,930 INFO L448 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2018-12-02 06:52:37,930 INFO L448 ceAbstractionStarter]: For program point L50-2(line 50) no Hoare annotation was computed. [2018-12-02 06:52:37,930 INFO L444 ceAbstractionStarter]: At program point L47(line 47) the Hoare annotation is: (and (= |fmax_float_#in~y| fmax_float_~y) (= |fmax_float_#in~x| fmax_float_~x)) [2018-12-02 06:52:37,930 INFO L448 ceAbstractionStarter]: For program point L47-1(lines 47 49) no Hoare annotation was computed. [2018-12-02 06:52:37,930 INFO L444 ceAbstractionStarter]: At program point L43(line 43) the Hoare annotation is: (and (= |fmax_float_#in~y| fmax_float_~y) (= |fmax_float_#in~x| fmax_float_~x)) [2018-12-02 06:52:37,930 INFO L448 ceAbstractionStarter]: For program point L43-1(lines 43 45) no Hoare annotation was computed. [2018-12-02 06:52:37,930 INFO L448 ceAbstractionStarter]: For program point fmax_floatFINAL(lines 42 51) no Hoare annotation was computed. [2018-12-02 06:52:37,930 INFO L448 ceAbstractionStarter]: For program point L33(lines 33 39) no Hoare annotation was computed. [2018-12-02 06:52:37,930 INFO L448 ceAbstractionStarter]: For program point __fpclassify_floatFINAL(lines 19 40) no Hoare annotation was computed. [2018-12-02 06:52:37,930 INFO L448 ceAbstractionStarter]: For program point L36(lines 36 39) no Hoare annotation was computed. [2018-12-02 06:52:37,930 INFO L448 ceAbstractionStarter]: For program point L30(lines 30 39) no Hoare annotation was computed. [2018-12-02 06:52:37,930 INFO L448 ceAbstractionStarter]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2018-12-02 06:52:37,930 INFO L451 ceAbstractionStarter]: At program point L22-2(lines 22 26) the Hoare annotation is: true [2018-12-02 06:52:37,930 INFO L448 ceAbstractionStarter]: For program point L22-3(lines 19 40) no Hoare annotation was computed. [2018-12-02 06:52:37,930 INFO L451 ceAbstractionStarter]: At program point __fpclassify_floatENTRY(lines 19 40) the Hoare annotation is: true [2018-12-02 06:52:37,930 INFO L448 ceAbstractionStarter]: For program point __fpclassify_floatEXIT(lines 19 40) no Hoare annotation was computed. [2018-12-02 06:52:37,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 06:52:37 BoogieIcfgContainer [2018-12-02 06:52:37,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 06:52:37,934 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 06:52:37,934 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 06:52:37,934 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 06:52:37,934 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:52:35" (3/4) ... [2018-12-02 06:52:37,936 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 06:52:37,940 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2018-12-02 06:52:37,940 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-02 06:52:37,940 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-02 06:52:37,940 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fmax_float [2018-12-02 06:52:37,941 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2018-12-02 06:52:37,943 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2018-12-02 06:52:37,943 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-12-02 06:52:37,943 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-02 06:52:37,970 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_7f747c67-c3db-443f-96c8-02a13f203f7a/bin-2019/utaipan/witness.graphml [2018-12-02 06:52:37,971 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 06:52:37,971 INFO L168 Benchmark]: Toolchain (without parser) took 2510.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 210.8 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -246.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 06:52:37,972 INFO L168 Benchmark]: CDTParser took 0.19 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 06:52:37,972 INFO L168 Benchmark]: CACSL2BoogieTranslator took 160.48 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 932.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-12-02 06:52:37,972 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.28 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 06:52:37,973 INFO L168 Benchmark]: Boogie Preprocessor took 18.89 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 06:52:37,973 INFO L168 Benchmark]: RCFGBuilder took 203.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -178.6 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-12-02 06:52:37,973 INFO L168 Benchmark]: TraceAbstraction took 2072.11 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 67.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -92.8 MB). Peak memory consumption was 308.3 MB. Max. memory is 11.5 GB. [2018-12-02 06:52:37,974 INFO L168 Benchmark]: Witness Printer took 36.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2018-12-02 06:52:37,975 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 160.48 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 932.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.28 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 18.89 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 203.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -178.6 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2072.11 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 67.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -92.8 MB). Peak memory consumption was 308.3 MB. Max. memory is 11.5 GB. * Witness Printer took 36.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 65]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 37 locations, 1 error locations. SAFE Result, 2.0s OverallTime, 13 OverallIterations, 2 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 498 SDtfs, 31 SDslu, 1315 SDs, 0 SdLazy, 221 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 403 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 13 MinimizatonAttempts, 19 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 28 PreInvPairs, 33 NumberOfFragments, 48 HoareAnnotationTreeSize, 28 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 402 NumberOfCodeBlocks, 402 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 389 ConstructedInterpolants, 3 QuantifiedInterpolants, 21567 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1091 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 42/42 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...