./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1230_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1230_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31da98a788dd1938c78053bade42bc512d4e8954 ........................................................................................................................................................................................................................................................................................................................................................................................... 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_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1230_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31da98a788dd1938c78053bade42bc512d4e8954 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 12:53:46,858 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 12:53:46,859 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 12:53:46,866 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 12:53:46,866 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 12:53:46,867 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 12:53:46,868 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 12:53:46,869 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 12:53:46,870 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 12:53:46,870 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 12:53:46,871 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 12:53:46,871 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 12:53:46,872 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 12:53:46,873 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 12:53:46,873 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 12:53:46,874 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 12:53:46,874 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 12:53:46,876 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 12:53:46,877 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 12:53:46,878 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 12:53:46,878 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 12:53:46,879 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 12:53:46,881 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 12:53:46,881 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 12:53:46,881 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 12:53:46,882 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 12:53:46,882 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 12:53:46,882 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 12:53:46,883 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 12:53:46,884 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 12:53:46,884 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 12:53:46,884 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 12:53:46,884 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 12:53:46,885 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 12:53:46,885 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 12:53:46,886 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 12:53:46,886 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 12:53:46,896 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 12:53:46,896 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 12:53:46,897 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 12:53:46,897 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 12:53:46,898 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 12:53:46,898 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 12:53:46,898 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 12:53:46,898 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 12:53:46,898 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 12:53:46,898 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 12:53:46,899 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 12:53:46,899 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 12:53:46,899 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 12:53:46,899 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 12:53:46,899 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 12:53:46,899 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 12:53:46,899 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 12:53:46,900 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 12:53:46,900 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 12:53:46,900 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 12:53:46,900 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 12:53:46,900 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 12:53:46,900 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 12:53:46,901 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 12:53:46,901 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 12:53:46,901 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 12:53:46,901 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 12:53:46,901 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 12:53:46,901 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 12:53:46,901 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 12:53:46,902 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_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer 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 -> Automizer 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 -> 31da98a788dd1938c78053bade42bc512d4e8954 [2018-11-28 12:53:46,926 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 12:53:46,935 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 12:53:46,937 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 12:53:46,938 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 12:53:46,939 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 12:53:46,939 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1230_true-unreach-call.c [2018-11-28 12:53:46,980 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/data/c4cc392c0/4f06e1d3668a4affb4ea03c1daa390ea/FLAG25e4cb622 [2018-11-28 12:53:47,381 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 12:53:47,381 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/sv-benchmarks/c/float-newlib/float_req_bl_1230_true-unreach-call.c [2018-11-28 12:53:47,386 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/data/c4cc392c0/4f06e1d3668a4affb4ea03c1daa390ea/FLAG25e4cb622 [2018-11-28 12:53:47,395 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/data/c4cc392c0/4f06e1d3668a4affb4ea03c1daa390ea [2018-11-28 12:53:47,397 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 12:53:47,398 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 12:53:47,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 12:53:47,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 12:53:47,402 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 12:53:47,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:53:47" (1/1) ... [2018-11-28 12:53:47,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d0d070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:47, skipping insertion in model container [2018-11-28 12:53:47,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:53:47" (1/1) ... [2018-11-28 12:53:47,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 12:53:47,419 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 12:53:47,524 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:53:47,526 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 12:53:47,542 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:53:47,554 INFO L195 MainTranslator]: Completed translation [2018-11-28 12:53:47,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:47 WrapperNode [2018-11-28 12:53:47,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 12:53:47,555 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 12:53:47,555 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 12:53:47,555 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 12:53:47,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:47" (1/1) ... [2018-11-28 12:53:47,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:47" (1/1) ... [2018-11-28 12:53:47,571 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 12:53:47,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 12:53:47,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 12:53:47,571 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 12:53:47,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:47" (1/1) ... [2018-11-28 12:53:47,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:47" (1/1) ... [2018-11-28 12:53:47,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:47" (1/1) ... [2018-11-28 12:53:47,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:47" (1/1) ... [2018-11-28 12:53:47,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:47" (1/1) ... [2018-11-28 12:53:47,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:47" (1/1) ... [2018-11-28 12:53:47,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:47" (1/1) ... [2018-11-28 12:53:47,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 12:53:47,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 12:53:47,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 12:53:47,623 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 12:53:47,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 12:53:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-28 12:53:47,654 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-28 12:53:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-11-28 12:53:47,654 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-11-28 12:53:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 12:53:47,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 12:53:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-28 12:53:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 12:53:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 12:53:47,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 12:53:47,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 12:53:47,655 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 12:53:47,655 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 12:53:47,655 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-28 12:53:47,655 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-28 12:53:47,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 12:53:47,819 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 12:53:47,819 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-28 12:53:47,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:53:47 BoogieIcfgContainer [2018-11-28 12:53:47,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 12:53:47,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 12:53:47,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 12:53:47,823 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 12:53:47,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:53:47" (1/3) ... [2018-11-28 12:53:47,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ea0fd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:53:47, skipping insertion in model container [2018-11-28 12:53:47,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:47" (2/3) ... [2018-11-28 12:53:47,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ea0fd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:53:47, skipping insertion in model container [2018-11-28 12:53:47,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:53:47" (3/3) ... [2018-11-28 12:53:47,826 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230_true-unreach-call.c [2018-11-28 12:53:47,834 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 12:53:47,840 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 12:53:47,851 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 12:53:47,868 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 12:53:47,869 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 12:53:47,869 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 12:53:47,869 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 12:53:47,869 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 12:53:47,869 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 12:53:47,869 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 12:53:47,869 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 12:53:47,869 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 12:53:47,880 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-11-28 12:53:47,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 12:53:47,884 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:53:47,885 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] [2018-11-28 12:53:47,886 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:53:47,889 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:53:47,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1023937428, now seen corresponding path program 1 times [2018-11-28 12:53:47,891 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:53:47,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:53:47,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:53:47,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:53:47,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:53:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:53:47,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:53:47,982 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:53:47,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 12:53:47,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 12:53:47,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 12:53:47,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 12:53:47,994 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2018-11-28 12:53:48,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:53:48,010 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2018-11-28 12:53:48,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 12:53:48,011 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-11-28 12:53:48,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:53:48,016 INFO L225 Difference]: With dead ends: 71 [2018-11-28 12:53:48,016 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 12:53:48,018 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 [2018-11-28 12:53:48,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 12:53:48,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-28 12:53:48,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 12:53:48,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-11-28 12:53:48,042 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2018-11-28 12:53:48,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:53:48,042 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-11-28 12:53:48,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 12:53:48,043 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-11-28 12:53:48,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-28 12:53:48,044 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:53:48,044 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] [2018-11-28 12:53:48,044 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:53:48,045 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:53:48,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1596536717, now seen corresponding path program 1 times [2018-11-28 12:53:48,045 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:53:48,045 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:53:48,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:53:48,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:53:48,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:53:48,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:53:48,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:53:48,112 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:53:48,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 12:53:48,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 12:53:48,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 12:53:48,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 12:53:48,114 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-11-28 12:53:48,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:53:48,155 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2018-11-28 12:53:48,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 12:53:48,155 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-11-28 12:53:48,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:53:48,157 INFO L225 Difference]: With dead ends: 51 [2018-11-28 12:53:48,157 INFO L226 Difference]: Without dead ends: 40 [2018-11-28 12:53:48,157 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 [2018-11-28 12:53:48,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-28 12:53:48,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-28 12:53:48,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 12:53:48,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-28 12:53:48,162 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2018-11-28 12:53:48,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:53:48,163 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-28 12:53:48,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 12:53:48,163 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-28 12:53:48,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-28 12:53:48,163 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:53:48,164 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] [2018-11-28 12:53:48,164 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:53:48,164 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:53:48,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1459057619, now seen corresponding path program 1 times [2018-11-28 12:53:48,164 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:53:48,164 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:53:48,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:53:48,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:53:48,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:53:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:53:48,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:53:48,212 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:53:48,212 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 12:53:48,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 12:53:48,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 12:53:48,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 12:53:48,213 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-11-28 12:53:48,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:53:48,230 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2018-11-28 12:53:48,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 12:53:48,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-28 12:53:48,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:53:48,231 INFO L225 Difference]: With dead ends: 55 [2018-11-28 12:53:48,231 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 12:53:48,232 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 [2018-11-28 12:53:48,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 12:53:48,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-11-28 12:53:48,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 12:53:48,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-28 12:53:48,237 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2018-11-28 12:53:48,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:53:48,237 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-28 12:53:48,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 12:53:48,237 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-28 12:53:48,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-28 12:53:48,237 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:53:48,238 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] [2018-11-28 12:53:48,238 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:53:48,238 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:53:48,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1328357868, now seen corresponding path program 1 times [2018-11-28 12:53:48,238 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:53:48,238 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:53:48,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:53:48,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:53:48,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:53:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:53:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:53:48,281 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 12:53:48,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:53:48 BoogieIcfgContainer [2018-11-28 12:53:48,298 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 12:53:48,298 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 12:53:48,298 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 12:53:48,298 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 12:53:48,298 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:53:47" (3/4) ... [2018-11-28 12:53:48,301 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 12:53:48,301 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 12:53:48,301 INFO L168 Benchmark]: Toolchain (without parser) took 903.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 959.8 MB in the beginning and 1.1 GB in the end (delta: -100.7 MB). Peak memory consumption was 45.6 MB. Max. memory is 11.5 GB. [2018-11-28 12:53:48,302 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:53:48,302 INFO L168 Benchmark]: CACSL2BoogieTranslator took 154.53 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 947.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. [2018-11-28 12:53:48,303 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.36 ms. Allocated memory is still 1.0 GB. Free memory was 947.9 MB in the beginning and 945.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-28 12:53:48,303 INFO L168 Benchmark]: Boogie Preprocessor took 51.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -196.4 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2018-11-28 12:53:48,304 INFO L168 Benchmark]: RCFGBuilder took 197.11 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: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. [2018-11-28 12:53:48,304 INFO L168 Benchmark]: TraceAbstraction took 477.34 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 11.5 GB. [2018-11-28 12:53:48,305 INFO L168 Benchmark]: Witness Printer took 2.85 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:53:48,307 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 154.53 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 947.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.36 ms. Allocated memory is still 1.0 GB. Free memory was 947.9 MB in the beginning and 945.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 51.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -196.4 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 197.11 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: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 477.34 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 11.5 GB. * Witness Printer took 2.85 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 59]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 54. Possible FailurePath: [L54] float x = 0.0f / 0.0f; [L55] float y = 0.0f / 0.0f; [L56] CALL, EXPR fmin_float(x, y) VAL [\old(x)=2139095043, \old(y)=2139095045] [L35] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=2139095043] [L12] __uint32_t w; VAL [\old(x)=2139095043, x=2139095043] [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (w) = gf_u.word [L20] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=2139095043, w=2139095041, x=2139095043] [L22-L23] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=2139095043, w=2139095041, x=2139095043] [L25-L26] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=2139095043, w=2139095041, x=2139095043] [L28] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L31] return 0; VAL [\old(x)=2139095043, \result=0, w=2139095041, x=2139095043] [L35] RET, EXPR __fpclassify_float(x) VAL [\old(x)=2139095043, \old(y)=2139095045, __fpclassify_float(x)=0, x=2139095043, y=2139095045] [L35] COND TRUE __fpclassify_float(x) == 0 [L36] return y; VAL [\old(x)=2139095043, \old(y)=2139095045, \result=2139095045, x=2139095043, y=2139095045] [L56] RET, EXPR fmin_float(x, y) VAL [fmin_float(x, y)=2139095045, x=2139095043, y=2139095045] [L56] float res = fmin_float(x, y); [L58] CALL, EXPR isnan_float(res) VAL [\old(x)=2139095045] [L44] return x != x; VAL [\old(x)=2139095045, \result=0, x=2139095045] [L58] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, res=2139095045, x=2139095043, y=2139095045] [L58] COND TRUE !isnan_float(res) [L59] __VERIFIER_error() VAL [res=2139095045, x=2139095043, y=2139095045] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 locations, 1 error locations. UNSAFE Result, 0.4s 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 0.1.23-0cd3be1 [2018-11-28 12:53:49,708 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 12:53:49,709 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 12:53:49,718 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 12:53:49,718 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 12:53:49,719 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 12:53:49,720 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 12:53:49,721 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 12:53:49,723 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 12:53:49,723 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 12:53:49,724 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 12:53:49,724 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 12:53:49,725 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 12:53:49,725 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 12:53:49,726 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 12:53:49,727 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 12:53:49,728 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 12:53:49,729 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 12:53:49,731 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 12:53:49,732 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 12:53:49,732 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 12:53:49,733 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 12:53:49,735 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 12:53:49,736 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 12:53:49,736 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 12:53:49,736 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 12:53:49,737 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 12:53:49,737 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 12:53:49,738 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 12:53:49,739 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 12:53:49,740 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 12:53:49,740 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 12:53:49,740 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 12:53:49,740 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 12:53:49,741 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 12:53:49,741 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 12:53:49,742 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 12:53:49,752 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 12:53:49,753 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 12:53:49,753 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 12:53:49,753 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 12:53:49,754 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 12:53:49,754 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 12:53:49,755 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 12:53:49,755 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 12:53:49,755 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 12:53:49,755 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 12:53:49,755 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 12:53:49,755 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 12:53:49,756 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 12:53:49,756 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 12:53:49,756 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 12:53:49,756 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 12:53:49,756 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 12:53:49,756 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 12:53:49,756 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 12:53:49,757 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 12:53:49,757 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 12:53:49,757 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 12:53:49,757 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 12:53:49,757 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 12:53:49,757 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 12:53:49,757 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 12:53:49,758 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 12:53:49,758 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 12:53:49,758 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 12:53:49,758 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 12:53:49,760 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 12:53:49,760 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 12:53:49,760 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_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer 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 -> Automizer 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 -> 31da98a788dd1938c78053bade42bc512d4e8954 [2018-11-28 12:53:49,785 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 12:53:49,795 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 12:53:49,798 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 12:53:49,799 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 12:53:49,799 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 12:53:49,800 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1230_true-unreach-call.c [2018-11-28 12:53:49,843 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/data/6a1a05c3e/f5af6d2f944a41e7b393f176270cf2fe/FLAG4bdeb421c [2018-11-28 12:53:50,236 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 12:53:50,237 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/sv-benchmarks/c/float-newlib/float_req_bl_1230_true-unreach-call.c [2018-11-28 12:53:50,242 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/data/6a1a05c3e/f5af6d2f944a41e7b393f176270cf2fe/FLAG4bdeb421c [2018-11-28 12:53:50,251 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/data/6a1a05c3e/f5af6d2f944a41e7b393f176270cf2fe [2018-11-28 12:53:50,253 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 12:53:50,254 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 12:53:50,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 12:53:50,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 12:53:50,257 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 12:53:50,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:53:50" (1/1) ... [2018-11-28 12:53:50,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@742ef221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:50, skipping insertion in model container [2018-11-28 12:53:50,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:53:50" (1/1) ... [2018-11-28 12:53:50,264 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 12:53:50,275 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 12:53:50,381 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:53:50,384 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 12:53:50,401 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:53:50,418 INFO L195 MainTranslator]: Completed translation [2018-11-28 12:53:50,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:50 WrapperNode [2018-11-28 12:53:50,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 12:53:50,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 12:53:50,419 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 12:53:50,419 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 12:53:50,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:50" (1/1) ... [2018-11-28 12:53:50,432 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:50" (1/1) ... [2018-11-28 12:53:50,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 12:53:50,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 12:53:50,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 12:53:50,437 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 12:53:50,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:50" (1/1) ... [2018-11-28 12:53:50,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:50" (1/1) ... [2018-11-28 12:53:50,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:50" (1/1) ... [2018-11-28 12:53:50,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:50" (1/1) ... [2018-11-28 12:53:50,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:50" (1/1) ... [2018-11-28 12:53:50,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:50" (1/1) ... [2018-11-28 12:53:50,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:50" (1/1) ... [2018-11-28 12:53:50,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 12:53:50,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 12:53:50,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 12:53:50,500 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 12:53:50,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 12:53:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-28 12:53:50,532 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-28 12:53:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-11-28 12:53:50,532 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-11-28 12:53:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 12:53:50,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 12:53:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 12:53:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-28 12:53:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 12:53:50,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 12:53:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-28 12:53:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 12:53:50,533 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 12:53:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-28 12:53:50,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-28 12:53:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 12:53:50,678 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 12:53:50,711 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 12:53:50,711 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-28 12:53:50,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:53:50 BoogieIcfgContainer [2018-11-28 12:53:50,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 12:53:50,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 12:53:50,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 12:53:50,714 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 12:53:50,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:53:50" (1/3) ... [2018-11-28 12:53:50,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11763d0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:53:50, skipping insertion in model container [2018-11-28 12:53:50,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:50" (2/3) ... [2018-11-28 12:53:50,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11763d0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:53:50, skipping insertion in model container [2018-11-28 12:53:50,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:53:50" (3/3) ... [2018-11-28 12:53:50,716 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230_true-unreach-call.c [2018-11-28 12:53:50,722 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 12:53:50,727 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 12:53:50,736 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 12:53:50,754 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 12:53:50,755 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 12:53:50,755 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 12:53:50,755 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 12:53:50,755 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 12:53:50,755 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 12:53:50,755 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 12:53:50,755 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 12:53:50,755 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 12:53:50,767 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-11-28 12:53:50,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 12:53:50,770 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:53:50,771 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:53:50,772 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:53:50,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:53:50,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1898238320, now seen corresponding path program 1 times [2018-11-28 12:53:50,777 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 12:53:50,778 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-28 12:53:50,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:53:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:53:50,835 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:53:50,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:53:50,848 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 12:53:50,857 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:53:50,858 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 12:53:50,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 12:53:50,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 12:53:50,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 12:53:50,869 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2018-11-28 12:53:50,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:53:50,882 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2018-11-28 12:53:50,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 12:53:50,883 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-11-28 12:53:50,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:53:50,891 INFO L225 Difference]: With dead ends: 65 [2018-11-28 12:53:50,892 INFO L226 Difference]: Without dead ends: 33 [2018-11-28 12:53:50,895 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 [2018-11-28 12:53:50,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-28 12:53:50,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-11-28 12:53:50,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 12:53:50,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2018-11-28 12:53:50,922 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 24 [2018-11-28 12:53:50,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:53:50,923 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2018-11-28 12:53:50,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 12:53:50,923 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2018-11-28 12:53:50,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 12:53:50,925 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:53:50,925 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] [2018-11-28 12:53:50,925 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:53:50,925 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:53:50,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1313917914, now seen corresponding path program 1 times [2018-11-28 12:53:50,926 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 12:53:50,926 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-28 12:53:50,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:53:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:53:50,976 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:53:51,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:53:51,000 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 12:53:51,013 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:53:51,013 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 12:53:51,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 12:53:51,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 12:53:51,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 12:53:51,015 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 4 states. [2018-11-28 12:53:51,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:53:51,041 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2018-11-28 12:53:51,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 12:53:51,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-11-28 12:53:51,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:53:51,043 INFO L225 Difference]: With dead ends: 46 [2018-11-28 12:53:51,044 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 12:53:51,044 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 [2018-11-28 12:53:51,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 12:53:51,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-28 12:53:51,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 12:53:51,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-28 12:53:51,049 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 25 [2018-11-28 12:53:51,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:53:51,049 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-28 12:53:51,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 12:53:51,049 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-28 12:53:51,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 12:53:51,050 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:53:51,050 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] [2018-11-28 12:53:51,050 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:53:51,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:53:51,051 INFO L82 PathProgramCache]: Analyzing trace with hash 659959827, now seen corresponding path program 1 times [2018-11-28 12:53:51,051 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 12:53:51,051 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-28 12:53:51,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:53:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:53:51,099 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:53:51,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:53:51,122 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 12:53:51,129 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:53:51,129 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 12:53:51,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 12:53:51,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 12:53:51,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 12:53:51,130 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-11-28 12:53:51,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:53:51,153 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-11-28 12:53:51,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 12:53:51,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-11-28 12:53:51,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:53:51,155 INFO L225 Difference]: With dead ends: 49 [2018-11-28 12:53:51,155 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 12:53:51,155 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 [2018-11-28 12:53:51,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 12:53:51,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-28 12:53:51,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 12:53:51,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-28 12:53:51,162 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 26 [2018-11-28 12:53:51,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:53:51,163 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-28 12:53:51,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 12:53:51,163 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-28 12:53:51,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-28 12:53:51,164 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:53:51,164 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] [2018-11-28 12:53:51,164 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:53:51,164 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:53:51,165 INFO L82 PathProgramCache]: Analyzing trace with hash 547015626, now seen corresponding path program 1 times [2018-11-28 12:53:51,165 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 12:53:51,165 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-28 12:53:51,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:53:51,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:53:51,214 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:53:51,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:53:51,241 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 12:53:51,247 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:53:51,248 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 12:53:51,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 12:53:51,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 12:53:51,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 12:53:51,248 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-11-28 12:53:51,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:53:51,266 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-11-28 12:53:51,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 12:53:51,266 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-11-28 12:53:51,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:53:51,267 INFO L225 Difference]: With dead ends: 49 [2018-11-28 12:53:51,267 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 12:53:51,267 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 [2018-11-28 12:53:51,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 12:53:51,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-28 12:53:51,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 12:53:51,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-28 12:53:51,271 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 27 [2018-11-28 12:53:51,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:53:51,272 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-28 12:53:51,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 12:53:51,272 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-28 12:53:51,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-28 12:53:51,272 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:53:51,273 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] [2018-11-28 12:53:51,273 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:53:51,273 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:53:51,273 INFO L82 PathProgramCache]: Analyzing trace with hash 167100663, now seen corresponding path program 1 times [2018-11-28 12:53:51,273 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 12:53:51,274 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-11-28 12:53:51,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:53:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:53:51,306 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:53:51,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:53:51,324 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 12:53:51,331 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:53:51,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 12:53:51,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 12:53:51,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 12:53:51,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 12:53:51,332 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-11-28 12:53:51,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:53:51,350 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-11-28 12:53:51,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 12:53:51,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-11-28 12:53:51,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:53:51,351 INFO L225 Difference]: With dead ends: 49 [2018-11-28 12:53:51,351 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 12:53:51,352 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 [2018-11-28 12:53:51,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 12:53:51,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-28 12:53:51,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 12:53:51,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-28 12:53:51,355 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 28 [2018-11-28 12:53:51,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:53:51,355 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-28 12:53:51,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 12:53:51,355 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-28 12:53:51,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-28 12:53:51,356 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:53:51,356 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] [2018-11-28 12:53:51,356 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:53:51,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:53:51,356 INFO L82 PathProgramCache]: Analyzing trace with hash -126302344, now seen corresponding path program 1 times [2018-11-28 12:53:51,357 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 12:53:51,357 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-11-28 12:53:51,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:53:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:53:51,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:53:51,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:53:51,498 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 12:53:51,505 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:53:51,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-28 12:53:51,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 12:53:51,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 12:53:51,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-28 12:53:51,506 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 9 states. [2018-11-28 12:53:51,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:53:51,739 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2018-11-28 12:53:51,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 12:53:51,740 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-11-28 12:53:51,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:53:51,741 INFO L225 Difference]: With dead ends: 43 [2018-11-28 12:53:51,741 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 12:53:51,742 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 [2018-11-28 12:53:51,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 12:53:51,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2018-11-28 12:53:51,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 12:53:51,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2018-11-28 12:53:51,745 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 28 [2018-11-28 12:53:51,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:53:51,746 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2018-11-28 12:53:51,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 12:53:51,746 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2018-11-28 12:53:51,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-28 12:53:51,747 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:53:51,747 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] [2018-11-28 12:53:51,747 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:53:51,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:53:51,747 INFO L82 PathProgramCache]: Analyzing trace with hash -114502674, now seen corresponding path program 1 times [2018-11-28 12:53:51,748 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 12:53:51,748 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-11-28 12:53:51,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:53:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:53:51,800 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:53:51,833 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-28 12:53:51,834 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 12:53:51,840 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:53:51,840 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 12:53:51,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 12:53:51,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 12:53:51,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 12:53:51,841 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 4 states. [2018-11-28 12:53:51,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:53:51,854 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-11-28 12:53:51,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 12:53:51,854 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-11-28 12:53:51,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:53:51,855 INFO L225 Difference]: With dead ends: 46 [2018-11-28 12:53:51,855 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 12:53:51,855 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 [2018-11-28 12:53:51,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 12:53:51,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-28 12:53:51,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 12:53:51,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-11-28 12:53:51,859 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 33 [2018-11-28 12:53:51,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:53:51,859 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-11-28 12:53:51,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 12:53:51,859 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-11-28 12:53:51,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-28 12:53:51,860 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:53:51,860 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] [2018-11-28 12:53:51,860 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:53:51,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:53:51,860 INFO L82 PathProgramCache]: Analyzing trace with hash -957719579, now seen corresponding path program 1 times [2018-11-28 12:53:51,861 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 12:53:51,861 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-11-28 12:53:51,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:53:51,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:53:51,907 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:53:51,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-28 12:53:51,916 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 12:53:51,923 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:53:51,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 12:53:51,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 12:53:51,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 12:53:51,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 12:53:51,924 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-11-28 12:53:51,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:53:51,940 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2018-11-28 12:53:51,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 12:53:51,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-11-28 12:53:51,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:53:51,942 INFO L225 Difference]: With dead ends: 49 [2018-11-28 12:53:51,942 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 12:53:51,942 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 [2018-11-28 12:53:51,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 12:53:51,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-28 12:53:51,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 12:53:51,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-11-28 12:53:51,946 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 34 [2018-11-28 12:53:51,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:53:51,946 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-11-28 12:53:51,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 12:53:51,946 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-11-28 12:53:51,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-28 12:53:51,947 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:53:51,947 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] [2018-11-28 12:53:51,947 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:53:51,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:53:51,948 INFO L82 PathProgramCache]: Analyzing trace with hash -2106425557, now seen corresponding path program 1 times [2018-11-28 12:53:51,948 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 12:53:51,948 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/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 [2018-11-28 12:53:51,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:53:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:53:52,005 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:53:52,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 12:53:52,120 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 12:53:52,129 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:53:52,129 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-11-28 12:53:52,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 12:53:52,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 12:53:52,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-11-28 12:53:52,130 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 10 states. [2018-11-28 12:53:52,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:53:52,361 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2018-11-28 12:53:52,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 12:53:52,361 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2018-11-28 12:53:52,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:53:52,362 INFO L225 Difference]: With dead ends: 44 [2018-11-28 12:53:52,362 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 12:53:52,363 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-11-28 12:53:52,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 12:53:52,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-28 12:53:52,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 12:53:52,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-11-28 12:53:52,365 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 35 [2018-11-28 12:53:52,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:53:52,366 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-11-28 12:53:52,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 12:53:52,366 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-11-28 12:53:52,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-28 12:53:52,367 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:53:52,367 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] [2018-11-28 12:53:52,367 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:53:52,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:53:52,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1487477161, now seen corresponding path program 1 times [2018-11-28 12:53:52,367 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 12:53:52,368 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/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 [2018-11-28 12:53:52,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:53:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:53:52,417 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:53:52,479 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 12:53:52,479 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 12:53:52,486 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:53:52,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 12:53:52,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 12:53:52,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 12:53:52,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 12:53:52,486 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 5 states. [2018-11-28 12:53:52,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:53:52,562 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2018-11-28 12:53:52,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 12:53:52,563 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-11-28 12:53:52,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:53:52,563 INFO L225 Difference]: With dead ends: 46 [2018-11-28 12:53:52,563 INFO L226 Difference]: Without dead ends: 33 [2018-11-28 12:53:52,564 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 [2018-11-28 12:53:52,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-28 12:53:52,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-11-28 12:53:52,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 12:53:52,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-11-28 12:53:52,566 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-11-28 12:53:52,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:53:52,567 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-28 12:53:52,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 12:53:52,567 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-11-28 12:53:52,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-28 12:53:52,567 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:53:52,568 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] [2018-11-28 12:53:52,568 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:53:52,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:53:52,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1793715410, now seen corresponding path program 1 times [2018-11-28 12:53:52,568 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 12:53:52,568 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/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 [2018-11-28 12:53:52,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:53:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:53:52,604 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:53:52,612 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-28 12:53:52,613 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 12:53:52,619 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:53:52,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 12:53:52,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 12:53:52,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 12:53:52,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 12:53:52,620 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-11-28 12:53:52,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:53:52,628 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-11-28 12:53:52,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 12:53:52,629 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-11-28 12:53:52,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:53:52,629 INFO L225 Difference]: With dead ends: 46 [2018-11-28 12:53:52,629 INFO L226 Difference]: Without dead ends: 35 [2018-11-28 12:53:52,630 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 [2018-11-28 12:53:52,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-28 12:53:52,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-11-28 12:53:52,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 12:53:52,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-11-28 12:53:52,632 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-11-28 12:53:52,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:53:52,632 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-28 12:53:52,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 12:53:52,633 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-11-28 12:53:52,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-28 12:53:52,633 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:53:52,633 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] [2018-11-28 12:53:52,633 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:53:52,634 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:53:52,634 INFO L82 PathProgramCache]: Analyzing trace with hash 15242121, now seen corresponding path program 1 times [2018-11-28 12:53:52,634 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 12:53:52,634 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/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 [2018-11-28 12:53:52,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:53:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:53:52,670 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:53:52,693 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-28 12:53:52,693 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 12:53:52,699 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:53:52,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 12:53:52,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 12:53:52,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 12:53:52,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 12:53:52,700 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-11-28 12:53:52,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:53:52,719 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-11-28 12:53:52,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 12:53:52,720 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-11-28 12:53:52,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:53:52,721 INFO L225 Difference]: With dead ends: 46 [2018-11-28 12:53:52,721 INFO L226 Difference]: Without dead ends: 35 [2018-11-28 12:53:52,721 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 [2018-11-28 12:53:52,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-28 12:53:52,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-11-28 12:53:52,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 12:53:52,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-11-28 12:53:52,725 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 36 [2018-11-28 12:53:52,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:53:52,725 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-28 12:53:52,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 12:53:52,726 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-11-28 12:53:52,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-28 12:53:52,726 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:53:52,726 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] [2018-11-28 12:53:52,727 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:53:52,727 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:53:52,727 INFO L82 PathProgramCache]: Analyzing trace with hash -278160886, now seen corresponding path program 1 times [2018-11-28 12:53:52,727 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 12:53:52,727 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/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 [2018-11-28 12:53:52,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:53:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:53:52,765 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:53:52,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 12:53:52,860 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 12:53:52,867 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:53:52,867 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-28 12:53:52,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 12:53:52,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 12:53:52,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-28 12:53:52,868 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 9 states. [2018-11-28 12:53:52,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:53:52,994 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-11-28 12:53:52,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 12:53:52,994 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2018-11-28 12:53:52,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:53:52,994 INFO L225 Difference]: With dead ends: 33 [2018-11-28 12:53:52,994 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 12:53:52,995 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 [2018-11-28 12:53:52,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 12:53:52,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 12:53:52,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 12:53:52,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 12:53:52,995 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2018-11-28 12:53:52,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:53:52,996 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 12:53:52,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 12:53:52,996 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 12:53:52,996 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 12:53:53,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 12:53:53,096 INFO L448 ceAbstractionStarter]: For program point isnan_floatFINAL(line 44) no Hoare annotation was computed. [2018-11-28 12:53:53,096 INFO L451 ceAbstractionStarter]: At program point isnan_floatENTRY(line 44) the Hoare annotation is: true [2018-11-28 12:53:53,096 INFO L448 ceAbstractionStarter]: For program point isnan_floatEXIT(line 44) no Hoare annotation was computed. [2018-11-28 12:53:53,096 INFO L451 ceAbstractionStarter]: At program point fmin_floatENTRY(lines 34 41) the Hoare annotation is: true [2018-11-28 12:53:53,096 INFO L448 ceAbstractionStarter]: For program point fmin_floatEXIT(lines 34 41) no Hoare annotation was computed. [2018-11-28 12:53:53,096 INFO L448 ceAbstractionStarter]: For program point fmin_floatFINAL(lines 34 41) no Hoare annotation was computed. [2018-11-28 12:53:53,096 INFO L448 ceAbstractionStarter]: For program point L40(line 40) no Hoare annotation was computed. [2018-11-28 12:53:53,096 INFO L448 ceAbstractionStarter]: For program point L40-2(line 40) no Hoare annotation was computed. [2018-11-28 12:53:53,097 INFO L444 ceAbstractionStarter]: At program point L37(line 37) the Hoare annotation is: (and (= fmin_float_~x |fmin_float_#in~x|) (= fmin_float_~y |fmin_float_#in~y|)) [2018-11-28 12:53:53,097 INFO L448 ceAbstractionStarter]: For program point L37-1(lines 37 38) no Hoare annotation was computed. [2018-11-28 12:53:53,097 INFO L444 ceAbstractionStarter]: At program point L35(line 35) the Hoare annotation is: (and (= fmin_float_~x |fmin_float_#in~x|) (= fmin_float_~y |fmin_float_#in~y|)) [2018-11-28 12:53:53,097 INFO L448 ceAbstractionStarter]: For program point L35-1(lines 35 36) no Hoare annotation was computed. [2018-11-28 12:53:53,097 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-28 12:53:53,097 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-28 12:53:53,097 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 12:53:53,097 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 12:53:53,097 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 12:53:53,097 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 12:53:53,097 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 12:53:53,097 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 46 64) the Hoare annotation is: true [2018-11-28 12:53:53,098 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 46 64) no Hoare annotation was computed. [2018-11-28 12:53:53,098 INFO L448 ceAbstractionStarter]: For program point L59(line 59) no Hoare annotation was computed. [2018-11-28 12:53:53,098 INFO L444 ceAbstractionStarter]: At program point L58(line 58) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (and (= main_~res~0 .cse0) (= main_~y~0 .cse0))) [2018-11-28 12:53:53,098 INFO L448 ceAbstractionStarter]: For program point L58-1(lines 58 61) no Hoare annotation was computed. [2018-11-28 12:53:53,098 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 46 64) no Hoare annotation was computed. [2018-11-28 12:53:53,098 INFO L444 ceAbstractionStarter]: At program point L56(line 56) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (and (= main_~y~0 .cse0) (= main_~x~0 .cse0))) [2018-11-28 12:53:53,098 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 59) no Hoare annotation was computed. [2018-11-28 12:53:53,104 INFO L448 ceAbstractionStarter]: For program point L56-1(line 56) no Hoare annotation was computed. [2018-11-28 12:53:53,104 INFO L448 ceAbstractionStarter]: For program point __fpclassify_floatFINAL(lines 11 32) no Hoare annotation was computed. [2018-11-28 12:53:53,104 INFO L448 ceAbstractionStarter]: For program point L25(lines 25 31) no Hoare annotation was computed. [2018-11-28 12:53:53,104 INFO L448 ceAbstractionStarter]: For program point L28(lines 28 31) no Hoare annotation was computed. [2018-11-28 12:53:53,104 INFO L448 ceAbstractionStarter]: For program point L22(lines 22 31) no Hoare annotation was computed. [2018-11-28 12:53:53,104 INFO L448 ceAbstractionStarter]: For program point L14-1(lines 14 18) no Hoare annotation was computed. [2018-11-28 12:53:53,104 INFO L451 ceAbstractionStarter]: At program point __fpclassify_floatENTRY(lines 11 32) the Hoare annotation is: true [2018-11-28 12:53:53,104 INFO L451 ceAbstractionStarter]: At program point L14-2(lines 14 18) the Hoare annotation is: true [2018-11-28 12:53:53,104 INFO L448 ceAbstractionStarter]: For program point L14-3(lines 11 32) no Hoare annotation was computed. [2018-11-28 12:53:53,104 INFO L448 ceAbstractionStarter]: For program point __fpclassify_floatEXIT(lines 11 32) no Hoare annotation was computed. [2018-11-28 12:53:53,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:53:53 BoogieIcfgContainer [2018-11-28 12:53:53,109 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 12:53:53,110 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 12:53:53,110 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 12:53:53,110 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 12:53:53,110 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:53:50" (3/4) ... [2018-11-28 12:53:53,113 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 12:53:53,116 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2018-11-28 12:53:53,117 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fmin_float [2018-11-28 12:53:53,117 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 12:53:53,117 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 12:53:53,117 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2018-11-28 12:53:53,120 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2018-11-28 12:53:53,120 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-28 12:53:53,120 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 12:53:53,151 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e211479e-b153-43c5-9612-f62d5194c8ef/bin-2019/uautomizer/witness.graphml [2018-11-28 12:53:53,151 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 12:53:53,152 INFO L168 Benchmark]: Toolchain (without parser) took 2897.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 207.1 MB). Free memory was 943.4 MB in the beginning and 1.2 GB in the end (delta: -239.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:53:53,153 INFO L168 Benchmark]: CDTParser took 0.18 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. [2018-11-28 12:53:53,153 INFO L168 Benchmark]: CACSL2BoogieTranslator took 163.81 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 12:53:53,153 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.89 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. [2018-11-28 12:53:53,153 INFO L168 Benchmark]: Boogie Preprocessor took 62.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -213.2 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. [2018-11-28 12:53:53,153 INFO L168 Benchmark]: RCFGBuilder took 211.80 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: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. [2018-11-28 12:53:53,154 INFO L168 Benchmark]: TraceAbstraction took 2397.51 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 61.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -73.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:53:53,154 INFO L168 Benchmark]: Witness Printer took 41.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-11-28 12:53:53,156 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 163.81 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.89 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 62.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -213.2 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 211.80 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: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2397.51 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 61.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -73.0 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 41.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 59]: 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: 14]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 37 locations, 1 error locations. SAFE Result, 2.3s OverallTime, 13 OverallIterations, 2 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 497 SDtfs, 31 SDslu, 1313 SDs, 0 SdLazy, 224 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, 0.7s 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, 0.6s InterpolantComputationTime, 402 NumberOfCodeBlocks, 402 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 389 ConstructedInterpolants, 3 QuantifiedInterpolants, 21389 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...