./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 ....................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 02:45:29,634 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 02:45:29,635 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 02:45:29,641 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 02:45:29,642 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 02:45:29,642 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 02:45:29,643 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 02:45:29,644 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 02:45:29,645 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 02:45:29,645 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 02:45:29,645 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 02:45:29,646 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 02:45:29,646 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 02:45:29,647 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 02:45:29,647 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 02:45:29,648 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 02:45:29,648 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 02:45:29,649 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 02:45:29,650 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 02:45:29,651 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 02:45:29,651 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 02:45:29,652 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 02:45:29,653 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 02:45:29,653 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 02:45:29,653 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 02:45:29,654 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 02:45:29,654 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 02:45:29,654 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 02:45:29,655 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 02:45:29,655 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 02:45:29,656 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 02:45:29,656 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 02:45:29,656 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 02:45:29,656 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 02:45:29,657 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 02:45:29,657 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 02:45:29,657 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 02:45:29,664 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 02:45:29,665 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 02:45:29,665 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 02:45:29,665 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 02:45:29,665 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 02:45:29,665 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 02:45:29,666 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 02:45:29,666 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 02:45:29,666 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 02:45:29,666 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 02:45:29,666 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 02:45:29,666 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 02:45:29,666 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 02:45:29,667 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 02:45:29,667 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 02:45:29,667 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 02:45:29,667 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 02:45:29,667 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 02:45:29,667 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 02:45:29,668 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 02:45:29,668 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 02:45:29,668 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 02:45:29,668 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 02:45:29,668 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 02:45:29,668 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 02:45:29,668 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 02:45:29,669 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 02:45:29,669 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 02:45:29,669 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 02:45:29,669 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 02:45:29,669 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 02:45:29,669 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 02:45:29,669 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 02:45:29,669 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 02:45:29,669 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 02:45:29,670 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 02:45:29,670 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_94139e1e-af80-437b-80b7-fa2adc631750/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 [2018-12-09 02:45:29,687 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 02:45:29,694 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 02:45:29,696 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 02:45:29,696 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 02:45:29,697 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 02:45:29,697 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-12-09 02:45:29,732 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/bin-2019/utaipan/data/b49bff556/07b9be9f5353421c9cbb14067ddd8bcb/FLAG6caf2bd09 [2018-12-09 02:45:30,171 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 02:45:30,171 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-12-09 02:45:30,175 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/bin-2019/utaipan/data/b49bff556/07b9be9f5353421c9cbb14067ddd8bcb/FLAG6caf2bd09 [2018-12-09 02:45:30,183 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/bin-2019/utaipan/data/b49bff556/07b9be9f5353421c9cbb14067ddd8bcb [2018-12-09 02:45:30,184 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 02:45:30,185 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 02:45:30,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 02:45:30,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 02:45:30,188 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 02:45:30,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:45:30" (1/1) ... [2018-12-09 02:45:30,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47e9f86c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:45:30, skipping insertion in model container [2018-12-09 02:45:30,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:45:30" (1/1) ... [2018-12-09 02:45:30,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 02:45:30,209 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 02:45:30,305 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 02:45:30,307 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 02:45:30,321 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 02:45:30,333 INFO L195 MainTranslator]: Completed translation [2018-12-09 02:45:30,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:45:30 WrapperNode [2018-12-09 02:45:30,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 02:45:30,333 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 02:45:30,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 02:45:30,334 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 02:45:30,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:45:30" (1/1) ... [2018-12-09 02:45:30,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:45:30" (1/1) ... [2018-12-09 02:45:30,353 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 02:45:30,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 02:45:30,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 02:45:30,354 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 02:45:30,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:45:30" (1/1) ... [2018-12-09 02:45:30,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:45:30" (1/1) ... [2018-12-09 02:45:30,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:45:30" (1/1) ... [2018-12-09 02:45:30,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:45:30" (1/1) ... [2018-12-09 02:45:30,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:45:30" (1/1) ... [2018-12-09 02:45:30,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:45:30" (1/1) ... [2018-12-09 02:45:30,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:45:30" (1/1) ... [2018-12-09 02:45:30,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 02:45:30,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 02:45:30,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 02:45:30,400 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 02:45:30,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:45:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/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 02:45:30,430 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-12-09 02:45:30,431 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-12-09 02:45:30,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 02:45:30,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 02:45:30,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-09 02:45:30,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 02:45:30,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 02:45:30,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 02:45:30,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 02:45:30,431 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 02:45:30,432 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 02:45:30,432 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-12-09 02:45:30,432 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-12-09 02:45:30,432 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-12-09 02:45:30,432 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-12-09 02:45:30,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 02:45:30,572 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 02:45:30,572 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-09 02:45:30,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:45:30 BoogieIcfgContainer [2018-12-09 02:45:30,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 02:45:30,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 02:45:30,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 02:45:30,575 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 02:45:30,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:45:30" (1/3) ... [2018-12-09 02:45:30,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c585717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:45:30, skipping insertion in model container [2018-12-09 02:45:30,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:45:30" (2/3) ... [2018-12-09 02:45:30,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c585717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:45:30, skipping insertion in model container [2018-12-09 02:45:30,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:45:30" (3/3) ... [2018-12-09 02:45:30,577 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250_true-unreach-call.c [2018-12-09 02:45:30,582 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 02:45:30,586 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 02:45:30,597 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 02:45:30,614 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 02:45:30,614 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 02:45:30,614 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 02:45:30,614 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 02:45:30,614 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 02:45:30,614 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 02:45:30,615 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 02:45:30,615 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 02:45:30,624 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-12-09 02:45:30,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 02:45:30,628 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 02:45:30,628 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 02:45:30,630 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 02:45:30,633 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 02:45:30,633 INFO L82 PathProgramCache]: Analyzing trace with hash -2093385797, now seen corresponding path program 1 times [2018-12-09 02:45:30,634 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 02:45:30,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 02:45:30,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 02:45:30,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 02:45:30,662 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 02:45:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 02:45:30,708 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 02:45:30,709 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 02:45:30,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 02:45:30,709 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 02:45:30,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 02:45:30,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 02:45:30,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 02:45:30,721 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2018-12-09 02:45:30,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 02:45:30,734 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2018-12-09 02:45:30,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 02:45:30,735 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-12-09 02:45:30,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 02:45:30,740 INFO L225 Difference]: With dead ends: 71 [2018-12-09 02:45:30,740 INFO L226 Difference]: Without dead ends: 36 [2018-12-09 02:45:30,742 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 02:45:30,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-09 02:45:30,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-09 02:45:30,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 02:45:30,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-12-09 02:45:30,766 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2018-12-09 02:45:30,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 02:45:30,766 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-12-09 02:45:30,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 02:45:30,766 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-12-09 02:45:30,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-09 02:45:30,767 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 02:45:30,767 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 02:45:30,767 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 02:45:30,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 02:45:30,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1590914468, now seen corresponding path program 1 times [2018-12-09 02:45:30,768 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 02:45:30,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 02:45:30,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 02:45:30,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 02:45:30,768 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 02:45:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 02:45:30,821 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 02:45:30,821 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 02:45:30,821 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 02:45:30,821 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 02:45:30,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 02:45:30,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 02:45:30,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 02:45:30,822 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-12-09 02:45:30,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 02:45:30,843 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2018-12-09 02:45:30,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 02:45:30,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-12-09 02:45:30,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 02:45:30,845 INFO L225 Difference]: With dead ends: 51 [2018-12-09 02:45:30,845 INFO L226 Difference]: Without dead ends: 40 [2018-12-09 02:45:30,845 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 02:45:30,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-09 02:45:30,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-09 02:45:30,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-09 02:45:30,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-12-09 02:45:30,850 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2018-12-09 02:45:30,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 02:45:30,851 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-12-09 02:45:30,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 02:45:30,851 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-12-09 02:45:30,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-09 02:45:30,851 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 02:45:30,851 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 02:45:30,852 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 02:45:30,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 02:45:30,852 INFO L82 PathProgramCache]: Analyzing trace with hash 87255330, now seen corresponding path program 1 times [2018-12-09 02:45:30,852 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 02:45:30,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 02:45:30,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 02:45:30,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 02:45:30,853 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 02:45:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 02:45:30,889 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 02:45:30,890 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 02:45:30,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 02:45:30,890 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 02:45:30,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 02:45:30,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 02:45:30,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 02:45:30,891 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-12-09 02:45:30,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 02:45:30,907 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2018-12-09 02:45:30,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 02:45:30,908 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-12-09 02:45:30,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 02:45:30,909 INFO L225 Difference]: With dead ends: 55 [2018-12-09 02:45:30,909 INFO L226 Difference]: Without dead ends: 44 [2018-12-09 02:45:30,909 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 02:45:30,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-09 02:45:30,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-12-09 02:45:30,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-09 02:45:30,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-12-09 02:45:30,914 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2018-12-09 02:45:30,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 02:45:30,914 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-12-09 02:45:30,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 02:45:30,914 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-12-09 02:45:30,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-09 02:45:30,915 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 02:45:30,915 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 02:45:30,915 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 02:45:30,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 02:45:30,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1594807139, now seen corresponding path program 1 times [2018-12-09 02:45:30,915 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 02:45:30,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 02:45:30,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 02:45:30,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 02:45:30,916 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 02:45:30,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 02:45:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 02:45:30,952 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 02:45:30,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 02:45:30 BoogieIcfgContainer [2018-12-09 02:45:30,969 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 02:45:30,969 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 02:45:30,969 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 02:45:30,970 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 02:45:30,970 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:45:30" (3/4) ... [2018-12-09 02:45:30,972 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 02:45:30,972 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 02:45:30,972 INFO L168 Benchmark]: Toolchain (without parser) took 787.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 962.4 MB in the beginning and 1.0 GB in the end (delta: -81.4 MB). Peak memory consumption was 39.7 MB. Max. memory is 11.5 GB. [2018-12-09 02:45:30,973 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 02:45:30,974 INFO L168 Benchmark]: CACSL2BoogieTranslator took 147.51 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 02:45:30,974 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.72 ms. Allocated memory is still 1.0 GB. Free memory was 951.7 MB in the beginning and 946.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 02:45:30,974 INFO L168 Benchmark]: Boogie Preprocessor took 46.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -166.5 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2018-12-09 02:45:30,975 INFO L168 Benchmark]: RCFGBuilder took 173.05 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: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2018-12-09 02:45:30,975 INFO L168 Benchmark]: TraceAbstraction took 395.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 11.5 GB. [2018-12-09 02:45:30,975 INFO L168 Benchmark]: Witness Printer took 2.70 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 02:45:30,977 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 147.51 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.7 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 19.72 ms. Allocated memory is still 1.0 GB. Free memory was 951.7 MB in the beginning and 946.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 46.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -166.5 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 173.05 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: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 395.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 11.5 GB. * Witness Printer took 2.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 65]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 54, overapproximation of someBinaryArithmeticFLOAToperation at line 60. Possible FailurePath: [L60] float x = 0.0f / 0.0f; [L61] float y = 0.0f / 0.0f; [L62] CALL, EXPR fmax_float(x, y) VAL [\old(x)=2139095045, \old(y)=2139095042] [L43] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=2139095045] [L20] __uint32_t w; VAL [\old(x)=2139095045, x=2139095045] [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (w) = gf_u.word [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=2139095045, w=2139095041, x=2139095045] [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=2139095045, w=2139095041, x=2139095045] [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=2139095045, w=2139095041, x=2139095045] [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] return 0; VAL [\old(x)=2139095045, \result=0, w=2139095041, x=2139095045] [L43] RET, EXPR __fpclassify_float(x) VAL [\old(x)=2139095045, \old(y)=2139095042, __fpclassify_float(x)=0, x=2139095045, y=2139095042] [L43] COND TRUE __fpclassify_float(x) == 0 [L44] return y; VAL [\old(x)=2139095045, \old(y)=2139095042, \result=2139095042, x=2139095045, y=2139095042] [L62] RET, EXPR fmax_float(x, y) VAL [fmax_float(x, y)=2139095042, x=2139095045, y=2139095042] [L62] float res = fmax_float(x, y); [L64] CALL, EXPR isnan_float(res) VAL [\old(x)=2139095042] [L54] return x != x; VAL [\old(x)=2139095042, \result=0, x=2139095042] [L64] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, res=2139095042, x=2139095045, y=2139095042] [L64] COND TRUE !isnan_float(res) [L65] __VERIFIER_error() VAL [res=2139095042, x=2139095045, y=2139095042] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 129 SDtfs, 0 SDslu, 152 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 2582 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-09 02:45:32,266 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 02:45:32,267 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 02:45:32,273 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 02:45:32,274 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 02:45:32,274 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 02:45:32,275 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 02:45:32,275 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 02:45:32,276 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 02:45:32,277 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 02:45:32,277 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 02:45:32,277 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 02:45:32,278 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 02:45:32,278 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 02:45:32,279 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 02:45:32,279 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 02:45:32,279 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 02:45:32,280 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 02:45:32,281 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 02:45:32,282 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 02:45:32,282 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 02:45:32,283 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 02:45:32,284 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 02:45:32,284 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 02:45:32,284 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 02:45:32,284 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 02:45:32,285 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 02:45:32,285 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 02:45:32,286 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 02:45:32,286 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 02:45:32,286 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 02:45:32,287 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 02:45:32,287 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 02:45:32,287 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 02:45:32,287 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 02:45:32,288 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 02:45:32,288 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-09 02:45:32,295 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 02:45:32,295 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 02:45:32,296 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 02:45:32,296 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 02:45:32,296 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 02:45:32,296 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 02:45:32,296 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 02:45:32,296 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 02:45:32,296 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 02:45:32,296 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 02:45:32,296 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 02:45:32,297 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 02:45:32,297 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 02:45:32,297 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 02:45:32,297 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 02:45:32,297 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 02:45:32,297 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 02:45:32,297 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 02:45:32,297 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 02:45:32,297 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 02:45:32,297 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 02:45:32,297 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 02:45:32,297 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 02:45:32,298 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 02:45:32,298 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 02:45:32,298 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 02:45:32,298 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 02:45:32,298 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 02:45:32,298 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 02:45:32,298 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 02:45:32,298 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 02:45:32,298 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-09 02:45:32,298 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 02:45:32,298 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 02:45:32,298 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 02:45:32,298 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_94139e1e-af80-437b-80b7-fa2adc631750/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 [2018-12-09 02:45:32,317 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 02:45:32,325 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 02:45:32,327 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 02:45:32,328 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 02:45:32,328 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 02:45:32,328 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-12-09 02:45:32,364 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/bin-2019/utaipan/data/91c24876b/9d2416c3c44542e2b648d0379d2b514b/FLAGa12c14680 [2018-12-09 02:45:32,769 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 02:45:32,770 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-12-09 02:45:32,773 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/bin-2019/utaipan/data/91c24876b/9d2416c3c44542e2b648d0379d2b514b/FLAGa12c14680 [2018-12-09 02:45:32,781 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/bin-2019/utaipan/data/91c24876b/9d2416c3c44542e2b648d0379d2b514b [2018-12-09 02:45:32,783 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 02:45:32,784 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 02:45:32,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 02:45:32,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 02:45:32,787 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 02:45:32,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:45:32" (1/1) ... [2018-12-09 02:45:32,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36a0bb1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:45:32, skipping insertion in model container [2018-12-09 02:45:32,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:45:32" (1/1) ... [2018-12-09 02:45:32,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 02:45:32,803 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 02:45:32,895 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 02:45:32,898 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 02:45:32,913 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 02:45:32,927 INFO L195 MainTranslator]: Completed translation [2018-12-09 02:45:32,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:45:32 WrapperNode [2018-12-09 02:45:32,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 02:45:32,928 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 02:45:32,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 02:45:32,928 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 02:45:32,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:45:32" (1/1) ... [2018-12-09 02:45:32,939 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:45:32" (1/1) ... [2018-12-09 02:45:32,943 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 02:45:32,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 02:45:32,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 02:45:32,944 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 02:45:32,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:45:32" (1/1) ... [2018-12-09 02:45:32,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:45:32" (1/1) ... [2018-12-09 02:45:32,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:45:32" (1/1) ... [2018-12-09 02:45:32,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:45:32" (1/1) ... [2018-12-09 02:45:32,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:45:32" (1/1) ... [2018-12-09 02:45:32,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:45:32" (1/1) ... [2018-12-09 02:45:32,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:45:32" (1/1) ... [2018-12-09 02:45:32,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 02:45:32,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 02:45:32,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 02:45:32,962 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 02:45:32,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:45:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/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 02:45:33,025 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-12-09 02:45:33,025 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-12-09 02:45:33,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 02:45:33,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 02:45:33,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 02:45:33,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-09 02:45:33,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 02:45:33,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 02:45:33,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-12-09 02:45:33,026 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 02:45:33,026 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 02:45:33,026 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-12-09 02:45:33,026 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-12-09 02:45:33,026 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-12-09 02:45:33,026 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-12-09 02:45:33,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 02:45:33,155 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 02:45:33,172 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 02:45:33,173 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-09 02:45:33,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:45:33 BoogieIcfgContainer [2018-12-09 02:45:33,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 02:45:33,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 02:45:33,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 02:45:33,176 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 02:45:33,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:45:32" (1/3) ... [2018-12-09 02:45:33,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1505085a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:45:33, skipping insertion in model container [2018-12-09 02:45:33,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:45:32" (2/3) ... [2018-12-09 02:45:33,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1505085a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:45:33, skipping insertion in model container [2018-12-09 02:45:33,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:45:33" (3/3) ... [2018-12-09 02:45:33,177 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250_true-unreach-call.c [2018-12-09 02:45:33,183 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 02:45:33,187 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 02:45:33,195 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 02:45:33,213 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 02:45:33,213 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 02:45:33,213 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 02:45:33,214 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 02:45:33,214 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 02:45:33,214 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 02:45:33,214 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 02:45:33,214 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 02:45:33,214 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 02:45:33,223 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-12-09 02:45:33,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-09 02:45:33,227 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 02:45:33,227 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 02:45:33,228 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 02:45:33,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 02:45:33,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1373398522, now seen corresponding path program 1 times [2018-12-09 02:45:33,234 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 02:45:33,235 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/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 02:45:33,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 02:45:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 02:45:33,278 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 02:45:33,289 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 02:45:33,289 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 02:45:33,299 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 02:45:33,299 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 02:45:33,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 02:45:33,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 02:45:33,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 02:45:33,309 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2018-12-09 02:45:33,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 02:45:33,322 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2018-12-09 02:45:33,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 02:45:33,323 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-12-09 02:45:33,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 02:45:33,329 INFO L225 Difference]: With dead ends: 65 [2018-12-09 02:45:33,329 INFO L226 Difference]: Without dead ends: 33 [2018-12-09 02:45:33,331 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 02:45:33,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-09 02:45:33,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-12-09 02:45:33,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 02:45:33,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2018-12-09 02:45:33,355 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 24 [2018-12-09 02:45:33,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 02:45:33,355 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2018-12-09 02:45:33,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 02:45:33,355 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2018-12-09 02:45:33,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-09 02:45:33,356 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 02:45:33,357 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 02:45:33,357 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 02:45:33,357 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 02:45:33,357 INFO L82 PathProgramCache]: Analyzing trace with hash 570225154, now seen corresponding path program 1 times [2018-12-09 02:45:33,357 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 02:45:33,357 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/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 02:45:33,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 02:45:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 02:45:33,391 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 02:45:33,407 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 02:45:33,408 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 02:45:33,414 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 02:45:33,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 02:45:33,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 02:45:33,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 02:45:33,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 02:45:33,416 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 4 states. [2018-12-09 02:45:33,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 02:45:33,435 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2018-12-09 02:45:33,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 02:45:33,435 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-12-09 02:45:33,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 02:45:33,437 INFO L225 Difference]: With dead ends: 46 [2018-12-09 02:45:33,437 INFO L226 Difference]: Without dead ends: 36 [2018-12-09 02:45:33,437 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 02:45:33,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-09 02:45:33,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-09 02:45:33,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 02:45:33,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-09 02:45:33,442 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 25 [2018-12-09 02:45:33,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 02:45:33,443 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-09 02:45:33,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 02:45:33,443 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-09 02:45:33,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 02:45:33,443 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 02:45:33,443 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 02:45:33,443 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 02:45:33,444 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 02:45:33,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1732831305, now seen corresponding path program 1 times [2018-12-09 02:45:33,444 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 02:45:33,444 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/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 02:45:33,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 02:45:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 02:45:33,474 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 02:45:33,484 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 02:45:33,484 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 02:45:33,491 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 02:45:33,491 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 02:45:33,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 02:45:33,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 02:45:33,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 02:45:33,492 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-12-09 02:45:33,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 02:45:33,513 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-12-09 02:45:33,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 02:45:33,514 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-12-09 02:45:33,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 02:45:33,515 INFO L225 Difference]: With dead ends: 49 [2018-12-09 02:45:33,515 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 02:45:33,515 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 02:45:33,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 02:45:33,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-09 02:45:33,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 02:45:33,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-09 02:45:33,521 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 26 [2018-12-09 02:45:33,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 02:45:33,521 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-09 02:45:33,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 02:45:33,521 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-09 02:45:33,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-09 02:45:33,522 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 02:45:33,522 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 02:45:33,522 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 02:45:33,523 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 02:45:33,523 INFO L82 PathProgramCache]: Analyzing trace with hash -2054695706, now seen corresponding path program 1 times [2018-12-09 02:45:33,523 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 02:45:33,523 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/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 02:45:33,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 02:45:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 02:45:33,558 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 02:45:33,579 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 02:45:33,579 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 02:45:33,586 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 02:45:33,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 02:45:33,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 02:45:33,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 02:45:33,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 02:45:33,587 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-12-09 02:45:33,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 02:45:33,603 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-12-09 02:45:33,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 02:45:33,603 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-12-09 02:45:33,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 02:45:33,604 INFO L225 Difference]: With dead ends: 49 [2018-12-09 02:45:33,604 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 02:45:33,604 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 02:45:33,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 02:45:33,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-09 02:45:33,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 02:45:33,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-09 02:45:33,607 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 27 [2018-12-09 02:45:33,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 02:45:33,608 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-09 02:45:33,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 02:45:33,608 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-09 02:45:33,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-09 02:45:33,608 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 02:45:33,608 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 02:45:33,609 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 02:45:33,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 02:45:33,609 INFO L82 PathProgramCache]: Analyzing trace with hash -382560787, now seen corresponding path program 1 times [2018-12-09 02:45:33,609 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 02:45:33,609 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/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 02:45:33,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 02:45:33,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 02:45:33,639 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 02:45:33,653 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 02:45:33,653 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 02:45:33,662 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 02:45:33,662 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 02:45:33,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 02:45:33,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 02:45:33,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 02:45:33,662 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-12-09 02:45:33,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 02:45:33,679 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-12-09 02:45:33,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 02:45:33,680 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-12-09 02:45:33,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 02:45:33,681 INFO L225 Difference]: With dead ends: 49 [2018-12-09 02:45:33,681 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 02:45:33,681 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 02:45:33,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 02:45:33,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-09 02:45:33,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 02:45:33,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-09 02:45:33,684 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 28 [2018-12-09 02:45:33,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 02:45:33,685 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-09 02:45:33,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 02:45:33,685 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-09 02:45:33,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-09 02:45:33,685 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 02:45:33,685 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 02:45:33,686 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 02:45:33,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 02:45:33,686 INFO L82 PathProgramCache]: Analyzing trace with hash -675963794, now seen corresponding path program 1 times [2018-12-09 02:45:33,686 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 02:45:33,686 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/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 02:45:33,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 02:45:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 02:45:33,716 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 02:45:33,807 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 02:45:33,807 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 02:45:33,814 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 02:45:33,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-09 02:45:33,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 02:45:33,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 02:45:33,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-09 02:45:33,815 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 9 states. [2018-12-09 02:45:33,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 02:45:33,990 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2018-12-09 02:45:33,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 02:45:33,990 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-12-09 02:45:33,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 02:45:33,991 INFO L225 Difference]: With dead ends: 43 [2018-12-09 02:45:33,991 INFO L226 Difference]: Without dead ends: 36 [2018-12-09 02:45:33,991 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 02:45:33,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-09 02:45:33,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2018-12-09 02:45:33,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 02:45:33,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2018-12-09 02:45:33,995 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 28 [2018-12-09 02:45:33,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 02:45:33,996 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2018-12-09 02:45:33,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 02:45:33,996 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2018-12-09 02:45:33,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-09 02:45:33,997 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 02:45:33,997 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 02:45:33,997 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 02:45:33,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 02:45:33,997 INFO L82 PathProgramCache]: Analyzing trace with hash 61144778, now seen corresponding path program 1 times [2018-12-09 02:45:33,998 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 02:45:33,998 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/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 02:45:34,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 02:45:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 02:45:34,038 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 02:45:34,053 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 02:45:34,053 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 02:45:34,065 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 02:45:34,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 02:45:34,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 02:45:34,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 02:45:34,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 02:45:34,066 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 4 states. [2018-12-09 02:45:34,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 02:45:34,076 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-12-09 02:45:34,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 02:45:34,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-12-09 02:45:34,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 02:45:34,078 INFO L225 Difference]: With dead ends: 46 [2018-12-09 02:45:34,078 INFO L226 Difference]: Without dead ends: 36 [2018-12-09 02:45:34,078 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 02:45:34,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-09 02:45:34,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-09 02:45:34,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 02:45:34,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-12-09 02:45:34,082 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 33 [2018-12-09 02:45:34,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 02:45:34,083 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-12-09 02:45:34,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 02:45:34,083 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-12-09 02:45:34,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-09 02:45:34,083 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 02:45:34,084 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 02:45:34,084 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 02:45:34,084 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 02:45:34,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1308604645, now seen corresponding path program 1 times [2018-12-09 02:45:34,084 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 02:45:34,084 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/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 02:45:34,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 02:45:34,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 02:45:34,121 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 02:45:34,131 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 02:45:34,131 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 02:45:34,138 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 02:45:34,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 02:45:34,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 02:45:34,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 02:45:34,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 02:45:34,139 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-12-09 02:45:34,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 02:45:34,151 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2018-12-09 02:45:34,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 02:45:34,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-12-09 02:45:34,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 02:45:34,152 INFO L225 Difference]: With dead ends: 49 [2018-12-09 02:45:34,152 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 02:45:34,152 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 02:45:34,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 02:45:34,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-09 02:45:34,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 02:45:34,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-12-09 02:45:34,155 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 34 [2018-12-09 02:45:34,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 02:45:34,156 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-12-09 02:45:34,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 02:45:34,156 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-12-09 02:45:34,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-09 02:45:34,156 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 02:45:34,156 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 02:45:34,156 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 02:45:34,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 02:45:34,157 INFO L82 PathProgramCache]: Analyzing trace with hash 922408263, now seen corresponding path program 1 times [2018-12-09 02:45:34,157 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 02:45:34,157 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/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 02:45:34,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 02:45:34,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 02:45:34,194 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 02:45:34,284 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 02:45:34,284 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 02:45:34,291 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 02:45:34,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-12-09 02:45:34,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-09 02:45:34,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-09 02:45:34,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-12-09 02:45:34,291 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 10 states. [2018-12-09 02:45:34,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 02:45:34,494 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2018-12-09 02:45:34,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-09 02:45:34,495 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2018-12-09 02:45:34,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 02:45:34,495 INFO L225 Difference]: With dead ends: 44 [2018-12-09 02:45:34,495 INFO L226 Difference]: Without dead ends: 36 [2018-12-09 02:45:34,496 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-12-09 02:45:34,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-09 02:45:34,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-09 02:45:34,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 02:45:34,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-12-09 02:45:34,498 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 35 [2018-12-09 02:45:34,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 02:45:34,498 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-12-09 02:45:34,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-09 02:45:34,499 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-12-09 02:45:34,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-09 02:45:34,499 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 02:45:34,499 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 02:45:34,499 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 02:45:34,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 02:45:34,500 INFO L82 PathProgramCache]: Analyzing trace with hash 221343685, now seen corresponding path program 1 times [2018-12-09 02:45:34,500 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 02:45:34,500 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/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 02:45:34,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 02:45:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 02:45:34,535 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 02:45:34,594 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 02:45:34,594 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 02:45:34,601 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 02:45:34,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 02:45:34,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 02:45:34,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 02:45:34,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 02:45:34,602 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 5 states. [2018-12-09 02:45:34,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 02:45:34,677 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2018-12-09 02:45:34,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 02:45:34,678 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-12-09 02:45:34,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 02:45:34,678 INFO L225 Difference]: With dead ends: 46 [2018-12-09 02:45:34,678 INFO L226 Difference]: Without dead ends: 33 [2018-12-09 02:45:34,678 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-09 02:45:34,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-09 02:45:34,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-12-09 02:45:34,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 02:45:34,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-12-09 02:45:34,680 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-12-09 02:45:34,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 02:45:34,681 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-12-09 02:45:34,681 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 02:45:34,681 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-12-09 02:45:34,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-09 02:45:34,681 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 02:45:34,681 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 02:45:34,681 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 02:45:34,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 02:45:34,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1994775826, now seen corresponding path program 1 times [2018-12-09 02:45:34,682 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 02:45:34,682 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/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 02:45:34,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 02:45:34,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 02:45:34,714 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 02:45:34,722 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 02:45:34,722 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 02:45:34,729 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 02:45:34,729 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 02:45:34,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 02:45:34,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 02:45:34,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 02:45:34,729 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-12-09 02:45:34,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 02:45:34,739 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-12-09 02:45:34,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 02:45:34,739 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-12-09 02:45:34,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 02:45:34,739 INFO L225 Difference]: With dead ends: 46 [2018-12-09 02:45:34,740 INFO L226 Difference]: Without dead ends: 35 [2018-12-09 02:45:34,740 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 02:45:34,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-09 02:45:34,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-12-09 02:45:34,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 02:45:34,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-12-09 02:45:34,742 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-12-09 02:45:34,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 02:45:34,742 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-12-09 02:45:34,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 02:45:34,742 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-12-09 02:45:34,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-09 02:45:34,743 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 02:45:34,743 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 02:45:34,743 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 02:45:34,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 02:45:34,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1330109311, now seen corresponding path program 1 times [2018-12-09 02:45:34,743 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 02:45:34,743 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/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 02:45:34,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 02:45:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 02:45:34,787 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 02:45:34,799 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 02:45:34,799 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 02:45:34,805 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 02:45:34,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 02:45:34,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 02:45:34,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 02:45:34,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 02:45:34,806 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-12-09 02:45:34,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 02:45:34,815 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-12-09 02:45:34,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 02:45:34,815 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-12-09 02:45:34,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 02:45:34,816 INFO L225 Difference]: With dead ends: 46 [2018-12-09 02:45:34,816 INFO L226 Difference]: Without dead ends: 35 [2018-12-09 02:45:34,816 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 02:45:34,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-09 02:45:34,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-12-09 02:45:34,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 02:45:34,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-12-09 02:45:34,820 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 36 [2018-12-09 02:45:34,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 02:45:34,820 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-12-09 02:45:34,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 02:45:34,820 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-12-09 02:45:34,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-09 02:45:34,821 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 02:45:34,821 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 02:45:34,821 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 02:45:34,821 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 02:45:34,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1036706304, now seen corresponding path program 1 times [2018-12-09 02:45:34,822 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 02:45:34,822 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/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 02:45:34,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 02:45:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 02:45:34,858 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 02:45:34,941 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 02:45:34,941 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 02:45:34,947 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 02:45:34,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-09 02:45:34,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 02:45:34,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 02:45:34,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-09 02:45:34,948 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 9 states. [2018-12-09 02:45:35,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 02:45:35,090 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-12-09 02:45:35,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 02:45:35,090 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2018-12-09 02:45:35,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 02:45:35,090 INFO L225 Difference]: With dead ends: 33 [2018-12-09 02:45:35,090 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 02:45:35,096 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 02:45:35,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 02:45:35,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 02:45:35,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 02:45:35,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 02:45:35,096 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2018-12-09 02:45:35,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 02:45:35,096 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 02:45:35,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 02:45:35,097 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 02:45:35,097 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 02:45:35,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 02:45:35,198 INFO L448 ceAbstractionStarter]: For program point isnan_floatFINAL(line 54) no Hoare annotation was computed. [2018-12-09 02:45:35,198 INFO L451 ceAbstractionStarter]: At program point isnan_floatENTRY(line 54) the Hoare annotation is: true [2018-12-09 02:45:35,198 INFO L448 ceAbstractionStarter]: For program point isnan_floatEXIT(line 54) no Hoare annotation was computed. [2018-12-09 02:45:35,198 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-09 02:45:35,198 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-09 02:45:35,198 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 02:45:35,198 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 02:45:35,198 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 02:45:35,198 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 02:45:35,198 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 02:45:35,198 INFO L448 ceAbstractionStarter]: For program point L65(line 65) no Hoare annotation was computed. [2018-12-09 02:45:35,198 INFO L444 ceAbstractionStarter]: At program point L64(line 64) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (and (= main_~res~0 .cse0) (= main_~y~0 .cse0))) [2018-12-09 02:45:35,198 INFO L448 ceAbstractionStarter]: For program point L64-1(lines 64 67) no Hoare annotation was computed. [2018-12-09 02:45:35,198 INFO L444 ceAbstractionStarter]: At program point L62(line 62) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (and (= main_~y~0 .cse0) (= main_~x~0 .cse0))) [2018-12-09 02:45:35,198 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 56 70) the Hoare annotation is: true [2018-12-09 02:45:35,199 INFO L448 ceAbstractionStarter]: For program point L62-1(line 62) no Hoare annotation was computed. [2018-12-09 02:45:35,199 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 56 70) no Hoare annotation was computed. [2018-12-09 02:45:35,199 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 56 70) no Hoare annotation was computed. [2018-12-09 02:45:35,199 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 65) no Hoare annotation was computed. [2018-12-09 02:45:35,199 INFO L448 ceAbstractionStarter]: For program point fmax_floatEXIT(lines 42 51) no Hoare annotation was computed. [2018-12-09 02:45:35,199 INFO L451 ceAbstractionStarter]: At program point fmax_floatENTRY(lines 42 51) the Hoare annotation is: true [2018-12-09 02:45:35,199 INFO L448 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2018-12-09 02:45:35,199 INFO L448 ceAbstractionStarter]: For program point L50-2(line 50) no Hoare annotation was computed. [2018-12-09 02:45:35,199 INFO L444 ceAbstractionStarter]: At program point L47(line 47) the Hoare annotation is: (and (= |fmax_float_#in~y| fmax_float_~y) (= |fmax_float_#in~x| fmax_float_~x)) [2018-12-09 02:45:35,199 INFO L448 ceAbstractionStarter]: For program point L47-1(lines 47 49) no Hoare annotation was computed. [2018-12-09 02:45:35,199 INFO L444 ceAbstractionStarter]: At program point L43(line 43) the Hoare annotation is: (and (= |fmax_float_#in~y| fmax_float_~y) (= |fmax_float_#in~x| fmax_float_~x)) [2018-12-09 02:45:35,199 INFO L448 ceAbstractionStarter]: For program point L43-1(lines 43 45) no Hoare annotation was computed. [2018-12-09 02:45:35,199 INFO L448 ceAbstractionStarter]: For program point fmax_floatFINAL(lines 42 51) no Hoare annotation was computed. [2018-12-09 02:45:35,199 INFO L448 ceAbstractionStarter]: For program point L33(lines 33 39) no Hoare annotation was computed. [2018-12-09 02:45:35,199 INFO L448 ceAbstractionStarter]: For program point __fpclassify_floatFINAL(lines 19 40) no Hoare annotation was computed. [2018-12-09 02:45:35,199 INFO L448 ceAbstractionStarter]: For program point L36(lines 36 39) no Hoare annotation was computed. [2018-12-09 02:45:35,199 INFO L448 ceAbstractionStarter]: For program point L30(lines 30 39) no Hoare annotation was computed. [2018-12-09 02:45:35,199 INFO L448 ceAbstractionStarter]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2018-12-09 02:45:35,199 INFO L451 ceAbstractionStarter]: At program point L22-2(lines 22 26) the Hoare annotation is: true [2018-12-09 02:45:35,200 INFO L448 ceAbstractionStarter]: For program point L22-3(lines 19 40) no Hoare annotation was computed. [2018-12-09 02:45:35,200 INFO L451 ceAbstractionStarter]: At program point __fpclassify_floatENTRY(lines 19 40) the Hoare annotation is: true [2018-12-09 02:45:35,200 INFO L448 ceAbstractionStarter]: For program point __fpclassify_floatEXIT(lines 19 40) no Hoare annotation was computed. [2018-12-09 02:45:35,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 02:45:35 BoogieIcfgContainer [2018-12-09 02:45:35,203 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 02:45:35,203 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 02:45:35,203 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 02:45:35,203 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 02:45:35,204 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:45:33" (3/4) ... [2018-12-09 02:45:35,206 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 02:45:35,209 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2018-12-09 02:45:35,210 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 02:45:35,210 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 02:45:35,210 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fmax_float [2018-12-09 02:45:35,210 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2018-12-09 02:45:35,212 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2018-12-09 02:45:35,212 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-12-09 02:45:35,213 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 02:45:35,238 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_94139e1e-af80-437b-80b7-fa2adc631750/bin-2019/utaipan/witness.graphml [2018-12-09 02:45:35,238 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 02:45:35,238 INFO L168 Benchmark]: Toolchain (without parser) took 2455.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 208.7 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -245.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 02:45:35,239 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 02:45:35,239 INFO L168 Benchmark]: CACSL2BoogieTranslator took 143.44 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 932.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-12-09 02:45:35,240 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.30 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 02:45:35,240 INFO L168 Benchmark]: Boogie Preprocessor took 18.46 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 02:45:35,240 INFO L168 Benchmark]: RCFGBuilder took 210.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -186.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-12-09 02:45:35,240 INFO L168 Benchmark]: TraceAbstraction took 2029.28 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 65.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -76.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 02:45:35,240 INFO L168 Benchmark]: Witness Printer took 34.68 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 02:45:35,241 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 143.44 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 932.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.30 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.46 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 210.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -186.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2029.28 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 65.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -76.8 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 34.68 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 65]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 37 locations, 1 error locations. SAFE Result, 1.9s OverallTime, 13 OverallIterations, 2 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 498 SDtfs, 31 SDslu, 1315 SDs, 0 SdLazy, 221 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 403 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 19 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 28 PreInvPairs, 33 NumberOfFragments, 48 HoareAnnotationTreeSize, 28 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 402 NumberOfCodeBlocks, 402 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 389 ConstructedInterpolants, 3 QuantifiedInterpolants, 21567 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1091 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 42/42 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...