./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_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_2e838155-6288-4502-83f8-fe32ba33d339/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1250_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/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 01b6390e563edc58f3f7d1f239b082df891f9006 ........................................................................................................................................................................................................................................................................................................................................................................................................... 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_2e838155-6288-4502-83f8-fe32ba33d339/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1250_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/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 01b6390e563edc58f3f7d1f239b082df891f9006 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 06:26:11,765 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 06:26:11,766 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 06:26:11,772 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 06:26:11,773 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 06:26:11,773 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 06:26:11,774 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 06:26:11,774 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 06:26:11,775 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 06:26:11,776 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 06:26:11,776 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 06:26:11,776 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 06:26:11,777 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 06:26:11,777 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 06:26:11,778 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 06:26:11,778 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 06:26:11,779 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 06:26:11,779 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 06:26:11,780 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 06:26:11,781 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 06:26:11,782 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 06:26:11,782 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 06:26:11,783 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 06:26:11,783 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 06:26:11,783 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 06:26:11,784 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 06:26:11,784 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 06:26:11,785 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 06:26:11,785 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 06:26:11,786 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 06:26:11,786 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 06:26:11,786 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 06:26:11,786 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 06:26:11,786 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 06:26:11,787 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 06:26:11,787 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 06:26:11,787 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 06:26:11,794 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 06:26:11,795 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 06:26:11,795 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 06:26:11,795 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 06:26:11,795 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 06:26:11,795 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 06:26:11,796 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 06:26:11,796 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 06:26:11,796 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 06:26:11,796 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 06:26:11,796 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 06:26:11,796 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 06:26:11,796 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 06:26:11,796 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 06:26:11,797 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 06:26:11,797 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 06:26:11,797 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 06:26:11,797 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 06:26:11,797 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 06:26:11,797 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 06:26:11,797 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 06:26:11,797 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 06:26:11,797 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 06:26:11,797 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 06:26:11,797 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 06:26:11,797 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 06:26:11,797 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 06:26:11,798 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 06:26:11,798 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 06:26:11,798 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 06:26:11,798 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 06:26:11,798 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 06:26:11,798 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 06:26:11,798 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 06:26:11,798 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 06:26:11,798 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 06:26:11,798 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_2e838155-6288-4502-83f8-fe32ba33d339/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 -> 01b6390e563edc58f3f7d1f239b082df891f9006 [2018-12-09 06:26:11,816 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 06:26:11,825 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 06:26:11,827 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 06:26:11,828 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 06:26:11,829 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 06:26:11,829 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1250_true-unreach-call.c [2018-12-09 06:26:11,865 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/bin-2019/utaipan/data/7ac2e31be/ec28c3bde1d64195aae4b9160c1ab557/FLAGa997ae414 [2018-12-09 06:26:12,281 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 06:26:12,282 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/sv-benchmarks/c/float-newlib/double_req_bl_1250_true-unreach-call.c [2018-12-09 06:26:12,285 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/bin-2019/utaipan/data/7ac2e31be/ec28c3bde1d64195aae4b9160c1ab557/FLAGa997ae414 [2018-12-09 06:26:12,293 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/bin-2019/utaipan/data/7ac2e31be/ec28c3bde1d64195aae4b9160c1ab557 [2018-12-09 06:26:12,295 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 06:26:12,295 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 06:26:12,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 06:26:12,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 06:26:12,298 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 06:26:12,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:26:12" (1/1) ... [2018-12-09 06:26:12,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26c1f7bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:26:12, skipping insertion in model container [2018-12-09 06:26:12,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:26:12" (1/1) ... [2018-12-09 06:26:12,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 06:26:12,314 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 06:26:12,406 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 06:26:12,407 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 06:26:12,422 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 06:26:12,434 INFO L195 MainTranslator]: Completed translation [2018-12-09 06:26:12,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:26:12 WrapperNode [2018-12-09 06:26:12,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 06:26:12,435 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 06:26:12,435 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 06:26:12,435 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 06:26:12,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:26:12" (1/1) ... [2018-12-09 06:26:12,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:26:12" (1/1) ... [2018-12-09 06:26:12,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 06:26:12,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 06:26:12,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 06:26:12,449 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 06:26:12,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:26:12" (1/1) ... [2018-12-09 06:26:12,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:26:12" (1/1) ... [2018-12-09 06:26:12,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:26:12" (1/1) ... [2018-12-09 06:26:12,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:26:12" (1/1) ... [2018-12-09 06:26:12,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:26:12" (1/1) ... [2018-12-09 06:26:12,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:26:12" (1/1) ... [2018-12-09 06:26:12,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:26:12" (1/1) ... [2018-12-09 06:26:12,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 06:26:12,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 06:26:12,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 06:26:12,500 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 06:26:12,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:26:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 06:26:12,533 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-12-09 06:26:12,533 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-12-09 06:26:12,533 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 06:26:12,533 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 06:26:12,533 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-12-09 06:26:12,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-12-09 06:26:12,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 06:26:12,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 06:26:12,534 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2018-12-09 06:26:12,534 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2018-12-09 06:26:12,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-09 06:26:12,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 06:26:12,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 06:26:12,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 06:26:12,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 06:26:12,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 06:26:12,663 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 06:26:12,663 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-09 06:26:12,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:26:12 BoogieIcfgContainer [2018-12-09 06:26:12,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 06:26:12,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 06:26:12,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 06:26:12,667 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 06:26:12,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:26:12" (1/3) ... [2018-12-09 06:26:12,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3421e11c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:26:12, skipping insertion in model container [2018-12-09 06:26:12,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:26:12" (2/3) ... [2018-12-09 06:26:12,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3421e11c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:26:12, skipping insertion in model container [2018-12-09 06:26:12,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:26:12" (3/3) ... [2018-12-09 06:26:12,670 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250_true-unreach-call.c [2018-12-09 06:26:12,678 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 06:26:12,683 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 06:26:12,692 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 06:26:12,710 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 06:26:12,710 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 06:26:12,711 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 06:26:12,711 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 06:26:12,711 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 06:26:12,711 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 06:26:12,711 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 06:26:12,711 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 06:26:12,721 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-12-09 06:26:12,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 06:26:12,725 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:26:12,726 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 06:26:12,727 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 06:26:12,732 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:26:12,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1777529962, now seen corresponding path program 1 times [2018-12-09 06:26:12,733 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 06:26:12,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:26:12,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:26:12,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:26:12,761 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 06:26:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:26:12,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:26:12,807 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 06:26:12,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 06:26:12,808 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 06:26:12,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 06:26:12,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 06:26:12,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 06:26:12,819 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2018-12-09 06:26:12,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:26:12,833 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2018-12-09 06:26:12,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 06:26:12,834 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-12-09 06:26:12,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:26:12,840 INFO L225 Difference]: With dead ends: 71 [2018-12-09 06:26:12,840 INFO L226 Difference]: Without dead ends: 36 [2018-12-09 06:26:12,842 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 06:26:12,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-09 06:26:12,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-09 06:26:12,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 06:26:12,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-12-09 06:26:12,866 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2018-12-09 06:26:12,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:26:12,867 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-12-09 06:26:12,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 06:26:12,867 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-12-09 06:26:12,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-09 06:26:12,868 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:26:12,868 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 06:26:12,869 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 06:26:12,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:26:12,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1782564235, now seen corresponding path program 1 times [2018-12-09 06:26:12,869 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 06:26:12,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:26:12,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:26:12,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:26:12,870 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 06:26:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:26:12,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:26:12,928 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 06:26:12,928 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 06:26:12,928 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 06:26:12,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 06:26:12,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 06:26:12,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 06:26:12,930 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-12-09 06:26:12,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:26:12,951 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2018-12-09 06:26:12,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 06:26:12,951 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-12-09 06:26:12,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:26:12,953 INFO L225 Difference]: With dead ends: 51 [2018-12-09 06:26:12,953 INFO L226 Difference]: Without dead ends: 40 [2018-12-09 06:26:12,953 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 [2018-12-09 06:26:12,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-09 06:26:12,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-09 06:26:12,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-09 06:26:12,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-12-09 06:26:12,958 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2018-12-09 06:26:12,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:26:12,958 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-12-09 06:26:12,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 06:26:12,958 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-12-09 06:26:12,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-09 06:26:12,959 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:26:12,959 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] [2018-12-09 06:26:12,959 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 06:26:12,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:26:12,959 INFO L82 PathProgramCache]: Analyzing trace with hash 105963089, now seen corresponding path program 1 times [2018-12-09 06:26:12,960 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 06:26:12,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:26:12,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:26:12,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:26:12,961 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 06:26:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:26:13,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:26:13,000 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 06:26:13,000 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 06:26:13,000 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 06:26:13,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 06:26:13,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 06:26:13,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 06:26:13,001 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-12-09 06:26:13,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:26:13,016 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2018-12-09 06:26:13,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 06:26:13,017 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-12-09 06:26:13,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:26:13,017 INFO L225 Difference]: With dead ends: 55 [2018-12-09 06:26:13,018 INFO L226 Difference]: Without dead ends: 44 [2018-12-09 06:26:13,018 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 [2018-12-09 06:26:13,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-09 06:26:13,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-12-09 06:26:13,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-09 06:26:13,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-12-09 06:26:13,023 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2018-12-09 06:26:13,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:26:13,024 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-12-09 06:26:13,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 06:26:13,024 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-12-09 06:26:13,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-09 06:26:13,024 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:26:13,024 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] [2018-12-09 06:26:13,024 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 06:26:13,024 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:26:13,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1613514898, now seen corresponding path program 1 times [2018-12-09 06:26:13,025 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 06:26:13,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:26:13,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:26:13,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:26:13,025 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 06:26:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 06:26:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 06:26:13,071 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 06:26:13,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:26:13 BoogieIcfgContainer [2018-12-09 06:26:13,089 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 06:26:13,089 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 06:26:13,089 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 06:26:13,089 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 06:26:13,090 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:26:12" (3/4) ... [2018-12-09 06:26:13,092 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 06:26:13,092 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 06:26:13,092 INFO L168 Benchmark]: Toolchain (without parser) took 797.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 950.8 MB in the beginning and 1.0 GB in the end (delta: -94.6 MB). Peak memory consumption was 34.3 MB. Max. memory is 11.5 GB. [2018-12-09 06:26:13,093 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 06:26:13,093 INFO L168 Benchmark]: CACSL2BoogieTranslator took 138.36 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 940.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 06:26:13,094 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.66 ms. Allocated memory is still 1.0 GB. Free memory was 940.0 MB in the beginning and 937.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-09 06:26:13,094 INFO L168 Benchmark]: Boogie Preprocessor took 50.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 937.3 MB in the beginning and 1.1 GB in the end (delta: -186.3 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2018-12-09 06:26:13,094 INFO L168 Benchmark]: RCFGBuilder took 163.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2018-12-09 06:26:13,095 INFO L168 Benchmark]: TraceAbstraction took 424.84 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: 59.6 MB). Peak memory consumption was 59.6 MB. Max. memory is 11.5 GB. [2018-12-09 06:26:13,095 INFO L168 Benchmark]: Witness Printer took 2.77 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. [2018-12-09 06:26:13,097 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 138.36 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 940.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 14.66 ms. Allocated memory is still 1.0 GB. Free memory was 940.0 MB in the beginning and 937.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 50.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 937.3 MB in the beginning and 1.1 GB in the end (delta: -186.3 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 163.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 424.84 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: 59.6 MB). Peak memory consumption was 59.6 MB. Max. memory is 11.5 GB. * Witness Printer took 2.77 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: 72]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 67. Possible FailurePath: [L67] double x = 0.0 / 0.0; [L68] double y = 0.0 / 0.0; [L69] CALL, EXPR fmax_double(x, y) VAL [\old(x)=4294967302, \old(y)=4294967303] [L55] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967302] [L27] __uint32_t msw, lsw; VAL [\old(x)=4294967302, x=4294967302] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (msw) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lsw) = ew_u.parts.lsw [L36-L37] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967302, lsw=4294967297, msw=4293918721, x=4294967302] [L39-L40] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967302, lsw=4294967297, msw=4293918721, x=4294967302] [L42-L43] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967302, lsw=4294967297, msw=4293918721, x=4294967302] [L46-L47] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L50] return 0; VAL [\old(x)=4294967302, \result=0, lsw=4294967297, msw=4293918721, x=4294967302] [L55] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4294967302, \old(y)=4294967303, __fpclassify_double(x)=0, x=4294967302, y=4294967303] [L55] COND TRUE __fpclassify_double(x) == 0 [L56] return y; VAL [\old(x)=4294967302, \old(y)=4294967303, \result=4294967303, x=4294967302, y=4294967303] [L69] RET, EXPR fmax_double(x, y) VAL [fmax_double(x, y)=4294967303, x=4294967302, y=4294967303] [L69] double res = fmax_double(x, y); [L71] CALL, EXPR isnan_double(res) VAL [\old(x)=4294967303] [L16] return x != x; VAL [\old(x)=4294967303, \result=0, x=4294967303] [L71] RET, EXPR isnan_double(res) VAL [isnan_double(res)=0, res=4294967303, x=4294967302, y=4294967303] [L71] COND TRUE !isnan_double(res) [L72] __VERIFIER_error() VAL [res=4294967303, x=4294967302, y=4294967303] - 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 [2018-12-09 06:26:14,437 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 06:26:14,438 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 06:26:14,445 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 06:26:14,445 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 06:26:14,445 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 06:26:14,446 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 06:26:14,447 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 06:26:14,449 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 06:26:14,449 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 06:26:14,450 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 06:26:14,450 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 06:26:14,450 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 06:26:14,451 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 06:26:14,451 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 06:26:14,451 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 06:26:14,452 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 06:26:14,453 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 06:26:14,454 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 06:26:14,455 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 06:26:14,455 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 06:26:14,456 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 06:26:14,458 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 06:26:14,458 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 06:26:14,458 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 06:26:14,459 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 06:26:14,459 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 06:26:14,460 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 06:26:14,460 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 06:26:14,460 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 06:26:14,461 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 06:26:14,461 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 06:26:14,461 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 06:26:14,461 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 06:26:14,462 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 06:26:14,462 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 06:26:14,462 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-09 06:26:14,471 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 06:26:14,472 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 06:26:14,472 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 06:26:14,472 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 06:26:14,473 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 06:26:14,473 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 06:26:14,473 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 06:26:14,473 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 06:26:14,473 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 06:26:14,474 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 06:26:14,474 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 06:26:14,474 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 06:26:14,474 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 06:26:14,474 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 06:26:14,475 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 06:26:14,475 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 06:26:14,475 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 06:26:14,475 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 06:26:14,475 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 06:26:14,475 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 06:26:14,476 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 06:26:14,476 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 06:26:14,476 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 06:26:14,476 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 06:26:14,476 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 06:26:14,476 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 06:26:14,476 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 06:26:14,477 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 06:26:14,477 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 06:26:14,477 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 06:26:14,477 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 06:26:14,477 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-09 06:26:14,477 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 06:26:14,478 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 06:26:14,478 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 06:26:14,478 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_2e838155-6288-4502-83f8-fe32ba33d339/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 -> 01b6390e563edc58f3f7d1f239b082df891f9006 [2018-12-09 06:26:14,501 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 06:26:14,509 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 06:26:14,511 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 06:26:14,512 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 06:26:14,512 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 06:26:14,513 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1250_true-unreach-call.c [2018-12-09 06:26:14,547 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/bin-2019/utaipan/data/8ca98c552/ff96962006614d6ea03661f620eba57d/FLAG518a476a1 [2018-12-09 06:26:14,878 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 06:26:14,879 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/sv-benchmarks/c/float-newlib/double_req_bl_1250_true-unreach-call.c [2018-12-09 06:26:14,883 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/bin-2019/utaipan/data/8ca98c552/ff96962006614d6ea03661f620eba57d/FLAG518a476a1 [2018-12-09 06:26:15,278 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/bin-2019/utaipan/data/8ca98c552/ff96962006614d6ea03661f620eba57d [2018-12-09 06:26:15,281 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 06:26:15,282 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 06:26:15,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 06:26:15,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 06:26:15,285 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 06:26:15,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:26:15" (1/1) ... [2018-12-09 06:26:15,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f25e7e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:26:15, skipping insertion in model container [2018-12-09 06:26:15,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:26:15" (1/1) ... [2018-12-09 06:26:15,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 06:26:15,304 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 06:26:15,398 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 06:26:15,401 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 06:26:15,417 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 06:26:15,433 INFO L195 MainTranslator]: Completed translation [2018-12-09 06:26:15,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:26:15 WrapperNode [2018-12-09 06:26:15,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 06:26:15,434 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 06:26:15,434 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 06:26:15,434 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 06:26:15,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:26:15" (1/1) ... [2018-12-09 06:26:15,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:26:15" (1/1) ... [2018-12-09 06:26:15,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 06:26:15,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 06:26:15,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 06:26:15,450 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 06:26:15,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:26:15" (1/1) ... [2018-12-09 06:26:15,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:26:15" (1/1) ... [2018-12-09 06:26:15,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:26:15" (1/1) ... [2018-12-09 06:26:15,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:26:15" (1/1) ... [2018-12-09 06:26:15,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:26:15" (1/1) ... [2018-12-09 06:26:15,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:26:15" (1/1) ... [2018-12-09 06:26:15,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:26:15" (1/1) ... [2018-12-09 06:26:15,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 06:26:15,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 06:26:15,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 06:26:15,470 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 06:26:15,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:26:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 06:26:15,531 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-12-09 06:26:15,531 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-12-09 06:26:15,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-12-09 06:26:15,531 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 06:26:15,532 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 06:26:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-12-09 06:26:15,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-12-09 06:26:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 06:26:15,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 06:26:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2018-12-09 06:26:15,532 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2018-12-09 06:26:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 06:26:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-09 06:26:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 06:26:15,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 06:26:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 06:26:15,643 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 06:26:15,698 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 06:26:15,698 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-09 06:26:15,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:26:15 BoogieIcfgContainer [2018-12-09 06:26:15,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 06:26:15,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 06:26:15,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 06:26:15,700 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 06:26:15,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:26:15" (1/3) ... [2018-12-09 06:26:15,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a8557c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:26:15, skipping insertion in model container [2018-12-09 06:26:15,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:26:15" (2/3) ... [2018-12-09 06:26:15,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a8557c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:26:15, skipping insertion in model container [2018-12-09 06:26:15,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:26:15" (3/3) ... [2018-12-09 06:26:15,702 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250_true-unreach-call.c [2018-12-09 06:26:15,708 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 06:26:15,712 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 06:26:15,720 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 06:26:15,740 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 06:26:15,740 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 06:26:15,741 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 06:26:15,741 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 06:26:15,741 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 06:26:15,741 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 06:26:15,741 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 06:26:15,741 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 06:26:15,741 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 06:26:15,750 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-12-09 06:26:15,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-09 06:26:15,755 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:26:15,756 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 06:26:15,757 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 06:26:15,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:26:15,760 INFO L82 PathProgramCache]: Analyzing trace with hash 656433164, now seen corresponding path program 1 times [2018-12-09 06:26:15,762 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 06:26:15,762 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-12-09 06:26:15,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:26:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:26:15,831 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 06:26:15,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:26:15,844 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 06:26:15,858 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 06:26:15,858 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 06:26:15,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 06:26:15,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 06:26:15,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 06:26:15,869 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2018-12-09 06:26:15,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:26:15,884 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2018-12-09 06:26:15,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 06:26:15,885 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-12-09 06:26:15,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:26:15,891 INFO L225 Difference]: With dead ends: 65 [2018-12-09 06:26:15,891 INFO L226 Difference]: Without dead ends: 33 [2018-12-09 06:26:15,893 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 [2018-12-09 06:26:15,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-09 06:26:15,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-12-09 06:26:15,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 06:26:15,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2018-12-09 06:26:15,921 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 24 [2018-12-09 06:26:15,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:26:15,921 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2018-12-09 06:26:15,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 06:26:15,922 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2018-12-09 06:26:15,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-09 06:26:15,923 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:26:15,923 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] [2018-12-09 06:26:15,923 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 06:26:15,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:26:15,924 INFO L82 PathProgramCache]: Analyzing trace with hash 123034921, now seen corresponding path program 1 times [2018-12-09 06:26:15,924 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 06:26:15,924 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-12-09 06:26:15,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:26:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:26:15,976 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 06:26:15,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:26:15,996 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 06:26:16,004 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 06:26:16,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 06:26:16,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 06:26:16,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 06:26:16,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 06:26:16,006 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 4 states. [2018-12-09 06:26:16,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:26:16,038 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2018-12-09 06:26:16,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 06:26:16,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-12-09 06:26:16,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:26:16,040 INFO L225 Difference]: With dead ends: 46 [2018-12-09 06:26:16,040 INFO L226 Difference]: Without dead ends: 36 [2018-12-09 06:26:16,041 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 [2018-12-09 06:26:16,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-09 06:26:16,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-09 06:26:16,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 06:26:16,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-09 06:26:16,045 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 25 [2018-12-09 06:26:16,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:26:16,046 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-09 06:26:16,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 06:26:16,046 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-09 06:26:16,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 06:26:16,046 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:26:16,046 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 06:26:16,046 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 06:26:16,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:26:16,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1807372911, now seen corresponding path program 1 times [2018-12-09 06:26:16,047 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 06:26:16,047 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-12-09 06:26:16,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:26:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:26:16,091 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 06:26:16,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:26:16,101 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 06:26:16,109 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 06:26:16,109 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 06:26:16,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 06:26:16,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 06:26:16,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 06:26:16,110 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-12-09 06:26:16,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:26:16,140 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-12-09 06:26:16,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 06:26:16,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-12-09 06:26:16,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:26:16,142 INFO L225 Difference]: With dead ends: 49 [2018-12-09 06:26:16,142 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 06:26:16,142 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 [2018-12-09 06:26:16,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 06:26:16,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-09 06:26:16,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 06:26:16,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-09 06:26:16,146 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 26 [2018-12-09 06:26:16,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:26:16,146 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-09 06:26:16,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 06:26:16,146 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-09 06:26:16,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-09 06:26:16,147 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:26:16,147 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 06:26:16,147 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 06:26:16,147 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:26:16,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1308631021, now seen corresponding path program 1 times [2018-12-09 06:26:16,148 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 06:26:16,148 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/bin-2019/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-12-09 06:26:16,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:26:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:26:16,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 06:26:16,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:26:16,199 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 06:26:16,205 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 06:26:16,206 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 06:26:16,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 06:26:16,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 06:26:16,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 06:26:16,206 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-12-09 06:26:16,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:26:16,245 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-12-09 06:26:16,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 06:26:16,245 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-12-09 06:26:16,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:26:16,246 INFO L225 Difference]: With dead ends: 49 [2018-12-09 06:26:16,246 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 06:26:16,247 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 [2018-12-09 06:26:16,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 06:26:16,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-09 06:26:16,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 06:26:16,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-09 06:26:16,251 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 27 [2018-12-09 06:26:16,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:26:16,251 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-09 06:26:16,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 06:26:16,251 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-09 06:26:16,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-09 06:26:16,252 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:26:16,252 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] [2018-12-09 06:26:16,252 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 06:26:16,252 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:26:16,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1853889587, now seen corresponding path program 1 times [2018-12-09 06:26:16,252 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 06:26:16,252 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/bin-2019/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-12-09 06:26:16,255 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:26:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:26:16,294 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 06:26:16,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:26:16,305 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 06:26:16,312 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 06:26:16,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 06:26:16,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 06:26:16,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 06:26:16,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 06:26:16,313 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-12-09 06:26:16,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:26:16,342 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-12-09 06:26:16,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 06:26:16,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-12-09 06:26:16,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:26:16,343 INFO L225 Difference]: With dead ends: 49 [2018-12-09 06:26:16,343 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 06:26:16,343 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 [2018-12-09 06:26:16,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 06:26:16,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-09 06:26:16,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 06:26:16,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-09 06:26:16,347 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 28 [2018-12-09 06:26:16,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:26:16,347 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-09 06:26:16,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 06:26:16,347 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-09 06:26:16,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-09 06:26:16,348 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:26:16,348 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] [2018-12-09 06:26:16,348 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 06:26:16,348 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:26:16,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1560486580, now seen corresponding path program 1 times [2018-12-09 06:26:16,349 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 06:26:16,349 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/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 [2018-12-09 06:26:16,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:26:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:26:16,392 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 06:26:16,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:26:16,492 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 06:26:16,499 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 06:26:16,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-09 06:26:16,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 06:26:16,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 06:26:16,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-09 06:26:16,500 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 9 states. [2018-12-09 06:26:16,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:26:16,932 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2018-12-09 06:26:16,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 06:26:16,933 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-12-09 06:26:16,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:26:16,933 INFO L225 Difference]: With dead ends: 43 [2018-12-09 06:26:16,933 INFO L226 Difference]: Without dead ends: 36 [2018-12-09 06:26:16,934 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 [2018-12-09 06:26:16,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-09 06:26:16,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2018-12-09 06:26:16,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 06:26:16,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2018-12-09 06:26:16,937 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 28 [2018-12-09 06:26:16,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:26:16,937 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2018-12-09 06:26:16,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 06:26:16,937 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2018-12-09 06:26:16,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-09 06:26:16,938 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:26:16,938 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] [2018-12-09 06:26:16,938 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 06:26:16,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:26:16,939 INFO L82 PathProgramCache]: Analyzing trace with hash -132849900, now seen corresponding path program 1 times [2018-12-09 06:26:16,939 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 06:26:16,939 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/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 [2018-12-09 06:26:16,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:26:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:26:16,999 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 06:26:17,009 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 06:26:17,009 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 06:26:17,016 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 06:26:17,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 06:26:17,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 06:26:17,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 06:26:17,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 06:26:17,017 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 4 states. [2018-12-09 06:26:17,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:26:17,028 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-12-09 06:26:17,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 06:26:17,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-12-09 06:26:17,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:26:17,029 INFO L225 Difference]: With dead ends: 46 [2018-12-09 06:26:17,029 INFO L226 Difference]: Without dead ends: 36 [2018-12-09 06:26:17,030 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 [2018-12-09 06:26:17,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-09 06:26:17,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-09 06:26:17,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 06:26:17,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-12-09 06:26:17,033 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 33 [2018-12-09 06:26:17,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:26:17,033 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-12-09 06:26:17,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 06:26:17,033 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-12-09 06:26:17,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-09 06:26:17,034 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:26:17,034 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] [2018-12-09 06:26:17,034 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 06:26:17,034 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:26:17,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1974935426, now seen corresponding path program 1 times [2018-12-09 06:26:17,035 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 06:26:17,035 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/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 [2018-12-09 06:26:17,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:26:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:26:17,092 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 06:26:17,107 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 06:26:17,107 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 06:26:17,115 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 06:26:17,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 06:26:17,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 06:26:17,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 06:26:17,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 06:26:17,116 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-12-09 06:26:17,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:26:17,128 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2018-12-09 06:26:17,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 06:26:17,128 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-12-09 06:26:17,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:26:17,129 INFO L225 Difference]: With dead ends: 49 [2018-12-09 06:26:17,129 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 06:26:17,129 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 [2018-12-09 06:26:17,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 06:26:17,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-09 06:26:17,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 06:26:17,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-12-09 06:26:17,132 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 34 [2018-12-09 06:26:17,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:26:17,132 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-12-09 06:26:17,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 06:26:17,132 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-12-09 06:26:17,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-09 06:26:17,133 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:26:17,133 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] [2018-12-09 06:26:17,133 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 06:26:17,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:26:17,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1277705297, now seen corresponding path program 1 times [2018-12-09 06:26:17,133 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 06:26:17,134 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/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 [2018-12-09 06:26:17,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:26:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:26:17,192 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 06:26:17,318 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 06:26:17,318 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 06:26:17,325 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 06:26:17,325 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-12-09 06:26:17,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-09 06:26:17,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-09 06:26:17,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-12-09 06:26:17,326 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 10 states. [2018-12-09 06:26:17,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:26:17,611 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2018-12-09 06:26:17,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-09 06:26:17,612 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2018-12-09 06:26:17,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:26:17,613 INFO L225 Difference]: With dead ends: 44 [2018-12-09 06:26:17,613 INFO L226 Difference]: Without dead ends: 36 [2018-12-09 06:26:17,613 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-12-09 06:26:17,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-09 06:26:17,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-09 06:26:17,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 06:26:17,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-12-09 06:26:17,616 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 35 [2018-12-09 06:26:17,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:26:17,616 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-12-09 06:26:17,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-09 06:26:17,617 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-12-09 06:26:17,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-09 06:26:17,617 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:26:17,617 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] [2018-12-09 06:26:17,618 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 06:26:17,618 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:26:17,618 INFO L82 PathProgramCache]: Analyzing trace with hash 576640719, now seen corresponding path program 1 times [2018-12-09 06:26:17,618 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 06:26:17,618 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/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 [2018-12-09 06:26:17,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:26:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:26:17,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 06:26:17,788 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 06:26:17,788 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 06:26:17,796 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 06:26:17,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 06:26:17,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 06:26:17,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 06:26:17,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 06:26:17,797 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 5 states. [2018-12-09 06:26:18,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:26:18,126 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2018-12-09 06:26:18,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 06:26:18,128 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-12-09 06:26:18,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:26:18,129 INFO L225 Difference]: With dead ends: 46 [2018-12-09 06:26:18,129 INFO L226 Difference]: Without dead ends: 33 [2018-12-09 06:26:18,129 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-09 06:26:18,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-09 06:26:18,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-12-09 06:26:18,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 06:26:18,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-12-09 06:26:18,131 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-12-09 06:26:18,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:26:18,132 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-12-09 06:26:18,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 06:26:18,132 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-12-09 06:26:18,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-09 06:26:18,132 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:26:18,132 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] [2018-12-09 06:26:18,132 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 06:26:18,132 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:26:18,132 INFO L82 PathProgramCache]: Analyzing trace with hash -123656616, now seen corresponding path program 1 times [2018-12-09 06:26:18,133 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 06:26:18,133 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/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 [2018-12-09 06:26:18,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:26:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:26:18,187 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 06:26:18,195 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 06:26:18,195 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 06:26:18,205 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 06:26:18,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 06:26:18,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 06:26:18,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 06:26:18,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 06:26:18,205 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-12-09 06:26:18,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:26:18,223 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-12-09 06:26:18,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 06:26:18,223 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-12-09 06:26:18,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:26:18,224 INFO L225 Difference]: With dead ends: 46 [2018-12-09 06:26:18,224 INFO L226 Difference]: Without dead ends: 35 [2018-12-09 06:26:18,224 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 [2018-12-09 06:26:18,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-09 06:26:18,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-12-09 06:26:18,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 06:26:18,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-12-09 06:26:18,226 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-12-09 06:26:18,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:26:18,226 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-12-09 06:26:18,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 06:26:18,226 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-12-09 06:26:18,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-09 06:26:18,227 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:26:18,227 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] [2018-12-09 06:26:18,227 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 06:26:18,227 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:26:18,227 INFO L82 PathProgramCache]: Analyzing trace with hash 257799618, now seen corresponding path program 1 times [2018-12-09 06:26:18,227 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 06:26:18,228 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/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 [2018-12-09 06:26:18,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:26:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:26:18,282 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 06:26:18,290 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 06:26:18,290 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 06:26:18,297 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 06:26:18,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 06:26:18,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 06:26:18,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 06:26:18,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 06:26:18,298 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-12-09 06:26:18,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:26:18,316 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-12-09 06:26:18,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 06:26:18,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-12-09 06:26:18,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:26:18,317 INFO L225 Difference]: With dead ends: 46 [2018-12-09 06:26:18,317 INFO L226 Difference]: Without dead ends: 35 [2018-12-09 06:26:18,317 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 [2018-12-09 06:26:18,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-09 06:26:18,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-12-09 06:26:18,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 06:26:18,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-12-09 06:26:18,320 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 36 [2018-12-09 06:26:18,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:26:18,320 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-12-09 06:26:18,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 06:26:18,321 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-12-09 06:26:18,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-09 06:26:18,321 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:26:18,321 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] [2018-12-09 06:26:18,321 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 06:26:18,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:26:18,322 INFO L82 PathProgramCache]: Analyzing trace with hash -35603389, now seen corresponding path program 1 times [2018-12-09 06:26:18,322 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 06:26:18,322 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/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 [2018-12-09 06:26:18,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:26:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:26:18,379 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 06:26:18,476 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 06:26:18,476 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 06:26:18,484 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 06:26:18,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-09 06:26:18,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 06:26:18,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 06:26:18,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-09 06:26:18,485 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 9 states. [2018-12-09 06:26:18,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:26:18,717 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-12-09 06:26:18,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 06:26:18,717 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2018-12-09 06:26:18,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:26:18,718 INFO L225 Difference]: With dead ends: 33 [2018-12-09 06:26:18,718 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 06:26:18,718 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 [2018-12-09 06:26:18,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 06:26:18,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 06:26:18,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 06:26:18,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 06:26:18,718 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2018-12-09 06:26:18,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:26:18,718 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 06:26:18,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 06:26:18,719 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 06:26:18,719 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 06:26:18,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 06:26:18,861 INFO L451 ceAbstractionStarter]: At program point isnan_doubleENTRY(line 16) the Hoare annotation is: true [2018-12-09 06:26:18,861 INFO L448 ceAbstractionStarter]: For program point isnan_doubleEXIT(line 16) no Hoare annotation was computed. [2018-12-09 06:26:18,861 INFO L448 ceAbstractionStarter]: For program point isnan_doubleFINAL(line 16) no Hoare annotation was computed. [2018-12-09 06:26:18,862 INFO L448 ceAbstractionStarter]: For program point L29-1(lines 29 34) no Hoare annotation was computed. [2018-12-09 06:26:18,862 INFO L451 ceAbstractionStarter]: At program point L29-2(lines 29 34) the Hoare annotation is: true [2018-12-09 06:26:18,862 INFO L448 ceAbstractionStarter]: For program point __fpclassify_doubleFINAL(lines 26 51) no Hoare annotation was computed. [2018-12-09 06:26:18,862 INFO L448 ceAbstractionStarter]: For program point L29-3(lines 26 51) no Hoare annotation was computed. [2018-12-09 06:26:18,862 INFO L448 ceAbstractionStarter]: For program point L46(lines 46 50) no Hoare annotation was computed. [2018-12-09 06:26:18,862 INFO L451 ceAbstractionStarter]: At program point __fpclassify_doubleENTRY(lines 26 51) the Hoare annotation is: true [2018-12-09 06:26:18,862 INFO L448 ceAbstractionStarter]: For program point L42(lines 42 50) no Hoare annotation was computed. [2018-12-09 06:26:18,862 INFO L448 ceAbstractionStarter]: For program point __fpclassify_doubleEXIT(lines 26 51) no Hoare annotation was computed. [2018-12-09 06:26:18,862 INFO L448 ceAbstractionStarter]: For program point L39(lines 39 50) no Hoare annotation was computed. [2018-12-09 06:26:18,862 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-09 06:26:18,862 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-09 06:26:18,862 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 06:26:18,862 INFO L448 ceAbstractionStarter]: For program point L60(line 60) no Hoare annotation was computed. [2018-12-09 06:26:18,862 INFO L448 ceAbstractionStarter]: For program point L60-2(line 60) no Hoare annotation was computed. [2018-12-09 06:26:18,863 INFO L444 ceAbstractionStarter]: At program point L57(line 57) the Hoare annotation is: (and (= fmax_double_~x |fmax_double_#in~x|) (= fmax_double_~y |fmax_double_#in~y|)) [2018-12-09 06:26:18,863 INFO L451 ceAbstractionStarter]: At program point fmax_doubleENTRY(lines 53 61) the Hoare annotation is: true [2018-12-09 06:26:18,863 INFO L448 ceAbstractionStarter]: For program point L57-1(lines 57 58) no Hoare annotation was computed. [2018-12-09 06:26:18,863 INFO L444 ceAbstractionStarter]: At program point L55(line 55) the Hoare annotation is: (and (= fmax_double_~x |fmax_double_#in~x|) (= fmax_double_~y |fmax_double_#in~y|)) [2018-12-09 06:26:18,863 INFO L448 ceAbstractionStarter]: For program point L55-1(lines 55 56) no Hoare annotation was computed. [2018-12-09 06:26:18,863 INFO L448 ceAbstractionStarter]: For program point fmax_doubleFINAL(lines 53 61) no Hoare annotation was computed. [2018-12-09 06:26:18,863 INFO L448 ceAbstractionStarter]: For program point fmax_doubleEXIT(lines 53 61) no Hoare annotation was computed. [2018-12-09 06:26:18,863 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 06:26:18,863 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 06:26:18,863 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 06:26:18,863 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 06:26:18,864 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 63 76) the Hoare annotation is: true [2018-12-09 06:26:18,864 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 63 76) no Hoare annotation was computed. [2018-12-09 06:26:18,864 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 72) no Hoare annotation was computed. [2018-12-09 06:26:18,864 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 63 76) no Hoare annotation was computed. [2018-12-09 06:26:18,864 INFO L448 ceAbstractionStarter]: For program point L72(line 72) no Hoare annotation was computed. [2018-12-09 06:26:18,864 INFO L444 ceAbstractionStarter]: At program point L71(line 71) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53)))) (and (= main_~y~0 .cse0) (= main_~res~0 .cse0))) [2018-12-09 06:26:18,864 INFO L448 ceAbstractionStarter]: For program point L71-1(lines 71 74) no Hoare annotation was computed. [2018-12-09 06:26:18,864 INFO L444 ceAbstractionStarter]: At program point L69(line 69) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53)))) (and (= main_~x~0 .cse0) (= main_~y~0 .cse0))) [2018-12-09 06:26:18,864 INFO L448 ceAbstractionStarter]: For program point L69-1(line 69) no Hoare annotation was computed. [2018-12-09 06:26:18,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:26:18 BoogieIcfgContainer [2018-12-09 06:26:18,868 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 06:26:18,868 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 06:26:18,868 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 06:26:18,868 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 06:26:18,868 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:26:15" (3/4) ... [2018-12-09 06:26:18,871 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 06:26:18,875 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_double [2018-12-09 06:26:18,875 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2018-12-09 06:26:18,875 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 06:26:18,875 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fmax_double [2018-12-09 06:26:18,875 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 06:26:18,879 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2018-12-09 06:26:18,879 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-09 06:26:18,879 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 06:26:18,911 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_2e838155-6288-4502-83f8-fe32ba33d339/bin-2019/utaipan/witness.graphml [2018-12-09 06:26:18,911 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 06:26:18,912 INFO L168 Benchmark]: Toolchain (without parser) took 3630.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 192.4 MB). Free memory was 943.4 MB in the beginning and 1.2 GB in the end (delta: -223.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 06:26:18,913 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 06:26:18,913 INFO L168 Benchmark]: CACSL2BoogieTranslator took 151.49 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 06:26:18,913 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.22 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. [2018-12-09 06:26:18,914 INFO L168 Benchmark]: Boogie Preprocessor took 19.96 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 06:26:18,914 INFO L168 Benchmark]: RCFGBuilder took 228.35 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -161.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. [2018-12-09 06:26:18,914 INFO L168 Benchmark]: TraceAbstraction took 3169.44 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 71.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -84.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 06:26:18,915 INFO L168 Benchmark]: Witness Printer took 43.20 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. [2018-12-09 06:26:18,916 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 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 151.49 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.22 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 19.96 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 228.35 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -161.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3169.44 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 71.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -84.5 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 43.20 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: 72]: 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: 29]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 37 locations, 1 error locations. SAFE Result, 3.1s OverallTime, 13 OverallIterations, 2 TraceHistogramMax, 1.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 498 SDtfs, 31 SDslu, 1315 SDs, 0 SdLazy, 221 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 403 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s 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, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 402 NumberOfCodeBlocks, 402 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 389 ConstructedInterpolants, 3 QuantifiedInterpolants, 21655 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1205 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...