./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1232a_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4284cb37841cd94fe17da64cc250a8a1e69c6375 .............................................................................................................................................................................................................................................................................................................................................................................................................. 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_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4284cb37841cd94fe17da64cc250a8a1e69c6375 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 05:13:47,823 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 05:13:47,824 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 05:13:47,833 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 05:13:47,833 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 05:13:47,833 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 05:13:47,834 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 05:13:47,835 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 05:13:47,836 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 05:13:47,837 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 05:13:47,838 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 05:13:47,838 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 05:13:47,839 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 05:13:47,839 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 05:13:47,840 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 05:13:47,841 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 05:13:47,841 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 05:13:47,842 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 05:13:47,844 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 05:13:47,845 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 05:13:47,846 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 05:13:47,846 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 05:13:47,848 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 05:13:47,848 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 05:13:47,848 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 05:13:47,849 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 05:13:47,850 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 05:13:47,850 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 05:13:47,851 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 05:13:47,852 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 05:13:47,852 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 05:13:47,852 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 05:13:47,852 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 05:13:47,853 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 05:13:47,853 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 05:13:47,854 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 05:13:47,854 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-02 05:13:47,864 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 05:13:47,864 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 05:13:47,865 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 05:13:47,865 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 05:13:47,865 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 05:13:47,865 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 05:13:47,866 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 05:13:47,866 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 05:13:47,866 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 05:13:47,866 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 05:13:47,866 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 05:13:47,866 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 05:13:47,866 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 05:13:47,867 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 05:13:47,867 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 05:13:47,867 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 05:13:47,867 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 05:13:47,868 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 05:13:47,868 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 05:13:47,868 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 05:13:47,868 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 05:13:47,868 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 05:13:47,868 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 05:13:47,869 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 05:13:47,869 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 05:13:47,869 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 05:13:47,869 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 05:13:47,869 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 05:13:47,869 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 05:13:47,869 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 05:13:47,870 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 05:13:47,870 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 05:13:47,870 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 05:13:47,870 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 05:13:47,870 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 05:13:47,870 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-02 05:13:47,870 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4284cb37841cd94fe17da64cc250a8a1e69c6375 [2018-12-02 05:13:47,893 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 05:13:47,900 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 05:13:47,902 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 05:13:47,903 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 05:13:47,903 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 05:13:47,904 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1232a_true-unreach-call.c [2018-12-02 05:13:47,937 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/data/79c010968/d6195cba8ca04e21be32bc43905aff04/FLAG1a3770ed8 [2018-12-02 05:13:48,273 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 05:13:48,273 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/sv-benchmarks/c/float-newlib/double_req_bl_1232a_true-unreach-call.c [2018-12-02 05:13:48,277 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/data/79c010968/d6195cba8ca04e21be32bc43905aff04/FLAG1a3770ed8 [2018-12-02 05:13:48,670 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/data/79c010968/d6195cba8ca04e21be32bc43905aff04 [2018-12-02 05:13:48,673 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 05:13:48,674 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 05:13:48,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 05:13:48,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 05:13:48,677 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 05:13:48,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:13:48" (1/1) ... [2018-12-02 05:13:48,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39ae6a80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:48, skipping insertion in model container [2018-12-02 05:13:48,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:13:48" (1/1) ... [2018-12-02 05:13:48,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 05:13:48,701 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 05:13:48,799 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 05:13:48,801 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 05:13:48,817 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 05:13:48,829 INFO L195 MainTranslator]: Completed translation [2018-12-02 05:13:48,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:48 WrapperNode [2018-12-02 05:13:48,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 05:13:48,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 05:13:48,830 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 05:13:48,830 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 05:13:48,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:48" (1/1) ... [2018-12-02 05:13:48,844 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:48" (1/1) ... [2018-12-02 05:13:48,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 05:13:48,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 05:13:48,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 05:13:48,878 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 05:13:48,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:48" (1/1) ... [2018-12-02 05:13:48,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:48" (1/1) ... [2018-12-02 05:13:48,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:48" (1/1) ... [2018-12-02 05:13:48,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:48" (1/1) ... [2018-12-02 05:13:48,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:48" (1/1) ... [2018-12-02 05:13:48,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:48" (1/1) ... [2018-12-02 05:13:48,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:48" (1/1) ... [2018-12-02 05:13:48,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 05:13:48,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 05:13:48,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 05:13:48,898 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 05:13:48,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 05:13:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-12-02 05:13:48,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-12-02 05:13:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 05:13:48,930 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 05:13:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-12-02 05:13:48,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-12-02 05:13:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 05:13:48,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 05:13:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-02 05:13:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 05:13:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 05:13:48,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 05:13:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-12-02 05:13:48,930 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-12-02 05:13:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 05:13:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 05:13:49,064 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 05:13:49,064 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-02 05:13:49,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:13:49 BoogieIcfgContainer [2018-12-02 05:13:49,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 05:13:49,065 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 05:13:49,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 05:13:49,067 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 05:13:49,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:13:48" (1/3) ... [2018-12-02 05:13:49,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e00f363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:13:49, skipping insertion in model container [2018-12-02 05:13:49,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:48" (2/3) ... [2018-12-02 05:13:49,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e00f363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:13:49, skipping insertion in model container [2018-12-02 05:13:49,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:13:49" (3/3) ... [2018-12-02 05:13:49,069 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a_true-unreach-call.c [2018-12-02 05:13:49,075 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 05:13:49,080 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 05:13:49,090 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 05:13:49,108 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 05:13:49,108 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 05:13:49,108 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 05:13:49,108 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 05:13:49,108 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 05:13:49,108 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 05:13:49,108 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 05:13:49,108 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 05:13:49,119 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-12-02 05:13:49,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-02 05:13:49,122 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:13:49,123 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:13:49,124 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:13:49,127 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:13:49,128 INFO L82 PathProgramCache]: Analyzing trace with hash 2125018936, now seen corresponding path program 1 times [2018-12-02 05:13:49,129 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 05:13:49,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:13:49,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:13:49,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:13:49,159 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 05:13:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:13:49,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:13:49,209 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:13:49,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 05:13:49,209 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 05:13:49,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 05:13:49,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 05:13:49,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 05:13:49,221 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-12-02 05:13:49,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:13:49,235 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2018-12-02 05:13:49,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 05:13:49,236 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-12-02 05:13:49,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:13:49,241 INFO L225 Difference]: With dead ends: 79 [2018-12-02 05:13:49,241 INFO L226 Difference]: Without dead ends: 40 [2018-12-02 05:13:49,243 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 05:13:49,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-02 05:13:49,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-02 05:13:49,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-02 05:13:49,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-12-02 05:13:49,268 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2018-12-02 05:13:49,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:13:49,268 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-12-02 05:13:49,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 05:13:49,268 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-12-02 05:13:49,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-02 05:13:49,269 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:13:49,269 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:13:49,270 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:13:49,270 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:13:49,270 INFO L82 PathProgramCache]: Analyzing trace with hash 2099930979, now seen corresponding path program 1 times [2018-12-02 05:13:49,270 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 05:13:49,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:13:49,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:13:49,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:13:49,271 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 05:13:49,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:13:49,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:13:49,316 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:13:49,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 05:13:49,316 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 05:13:49,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 05:13:49,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 05:13:49,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 05:13:49,318 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-12-02 05:13:49,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:13:49,346 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2018-12-02 05:13:49,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 05:13:49,347 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-12-02 05:13:49,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:13:49,349 INFO L225 Difference]: With dead ends: 59 [2018-12-02 05:13:49,349 INFO L226 Difference]: Without dead ends: 44 [2018-12-02 05:13:49,349 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 05:13:49,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-02 05:13:49,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-12-02 05:13:49,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-02 05:13:49,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-12-02 05:13:49,356 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2018-12-02 05:13:49,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:13:49,356 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-12-02 05:13:49,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 05:13:49,357 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-02 05:13:49,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-02 05:13:49,357 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:13:49,358 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:13:49,358 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:13:49,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:13:49,358 INFO L82 PathProgramCache]: Analyzing trace with hash -2011933537, now seen corresponding path program 1 times [2018-12-02 05:13:49,358 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 05:13:49,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:13:49,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:13:49,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:13:49,359 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 05:13:49,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:13:49,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:13:49,402 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:13:49,402 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 05:13:49,402 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 05:13:49,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 05:13:49,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 05:13:49,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 05:13:49,403 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2018-12-02 05:13:49,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:13:49,426 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2018-12-02 05:13:49,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 05:13:49,426 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-12-02 05:13:49,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:13:49,427 INFO L225 Difference]: With dead ends: 63 [2018-12-02 05:13:49,427 INFO L226 Difference]: Without dead ends: 48 [2018-12-02 05:13:49,427 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 05:13:49,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-12-02 05:13:49,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-12-02 05:13:49,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-02 05:13:49,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-12-02 05:13:49,431 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2018-12-02 05:13:49,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:13:49,431 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-12-02 05:13:49,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 05:13:49,431 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-02 05:13:49,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-02 05:13:49,432 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:13:49,432 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:13:49,432 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:13:49,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:13:49,432 INFO L82 PathProgramCache]: Analyzing trace with hash 486082400, now seen corresponding path program 1 times [2018-12-02 05:13:49,432 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 05:13:49,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:13:49,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:13:49,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:13:49,433 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 05:13:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 05:13:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 05:13:49,475 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 05:13:49,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 05:13:49 BoogieIcfgContainer [2018-12-02 05:13:49,492 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 05:13:49,492 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 05:13:49,492 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 05:13:49,492 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 05:13:49,493 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:13:49" (3/4) ... [2018-12-02 05:13:49,495 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-02 05:13:49,495 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 05:13:49,495 INFO L168 Benchmark]: Toolchain (without parser) took 822.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 957.8 MB in the beginning and 1.1 GB in the end (delta: -95.1 MB). Peak memory consumption was 38.6 MB. Max. memory is 11.5 GB. [2018-12-02 05:13:49,497 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 05:13:49,497 INFO L168 Benchmark]: CACSL2BoogieTranslator took 154.66 ms. Allocated memory is still 1.0 GB. Free memory was 957.8 MB in the beginning and 947.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 05:13:49,497 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -179.0 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2018-12-02 05:13:49,498 INFO L168 Benchmark]: Boogie Preprocessor took 19.34 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. [2018-12-02 05:13:49,498 INFO L168 Benchmark]: RCFGBuilder took 167.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. [2018-12-02 05:13:49,498 INFO L168 Benchmark]: TraceAbstraction took 426.99 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: 54.2 MB). Peak memory consumption was 54.2 MB. Max. memory is 11.5 GB. [2018-12-02 05:13:49,499 INFO L168 Benchmark]: Witness Printer took 2.78 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. [2018-12-02 05:13:49,500 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 154.66 ms. Allocated memory is still 1.0 GB. Free memory was 957.8 MB in the beginning and 947.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 48.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -179.0 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.34 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. * RCFGBuilder took 167.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 426.99 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: 54.2 MB). Peak memory consumption was 54.2 MB. Max. memory is 11.5 GB. * Witness Printer took 2.78 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: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 79, overapproximation of someUnaryDOUBLEoperation at line 75. Possible FailurePath: [L74] double x = 0.0; [L75] double y = -0.0; VAL [x=0] [L76] CALL, EXPR fmin_double(x, y) VAL [\old(x)=0, \old(y)=4293918727] [L46] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=0] [L19] __uint32_t msw, lsw; VAL [\old(x)=0, x=0] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=0, lsw=1, msw=4293918721, x=0] [L31-L32] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=0, lsw=1, msw=4293918721, x=0] [L34-L35] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=0, lsw=1, msw=4293918721, x=0] [L38-L39] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L42] return 0; VAL [\old(x)=0, \result=0, lsw=1, msw=4293918721, x=0] [L46] RET, EXPR __fpclassify_double(x) VAL [\old(x)=0, \old(y)=4293918727, __fpclassify_double(x)=0, x=0, y=4293918727] [L46] COND TRUE __fpclassify_double(x) == 0 [L47] return y; VAL [\old(x)=0, \old(y)=4293918727, \result=4293918727, x=0, y=4293918727] [L76] RET, EXPR fmin_double(x, y) VAL [fmin_double(x, y)=4293918727, x=0, y=4293918727] [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=4293918727, res == -0.0 && __signbit_double(res) == 1=0, x=0, y=4293918727] [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() VAL [res=4293918727, x=0, y=4293918727] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 144 SDtfs, 0 SDslu, 172 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1926 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-02 05:13:50,754 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 05:13:50,755 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 05:13:50,761 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 05:13:50,761 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 05:13:50,761 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 05:13:50,762 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 05:13:50,763 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 05:13:50,763 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 05:13:50,764 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 05:13:50,764 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 05:13:50,764 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 05:13:50,765 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 05:13:50,765 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 05:13:50,766 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 05:13:50,766 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 05:13:50,766 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 05:13:50,767 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 05:13:50,768 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 05:13:50,769 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 05:13:50,769 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 05:13:50,770 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 05:13:50,771 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 05:13:50,771 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 05:13:50,771 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 05:13:50,772 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 05:13:50,772 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 05:13:50,772 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 05:13:50,773 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 05:13:50,774 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 05:13:50,774 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 05:13:50,774 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 05:13:50,774 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 05:13:50,774 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 05:13:50,775 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 05:13:50,775 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 05:13:50,775 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-02 05:13:50,782 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 05:13:50,783 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 05:13:50,783 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 05:13:50,783 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 05:13:50,783 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 05:13:50,783 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 05:13:50,783 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 05:13:50,784 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 05:13:50,784 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 05:13:50,784 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 05:13:50,784 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 05:13:50,784 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 05:13:50,784 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 05:13:50,784 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 05:13:50,784 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 05:13:50,785 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 05:13:50,785 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 05:13:50,785 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-02 05:13:50,785 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-02 05:13:50,785 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 05:13:50,785 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 05:13:50,785 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 05:13:50,785 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 05:13:50,785 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 05:13:50,785 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 05:13:50,785 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 05:13:50,786 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 05:13:50,786 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 05:13:50,786 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 05:13:50,786 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 05:13:50,786 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 05:13:50,786 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-02 05:13:50,786 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 05:13:50,786 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-02 05:13:50,786 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-02 05:13:50,786 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_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4284cb37841cd94fe17da64cc250a8a1e69c6375 [2018-12-02 05:13:50,805 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 05:13:50,814 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 05:13:50,817 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 05:13:50,818 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 05:13:50,818 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 05:13:50,819 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1232a_true-unreach-call.c [2018-12-02 05:13:50,856 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/data/ecc05f21f/0441d97d20584ed5b222741b8f89a6f7/FLAG6c1552d5b [2018-12-02 05:13:51,230 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 05:13:51,231 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/sv-benchmarks/c/float-newlib/double_req_bl_1232a_true-unreach-call.c [2018-12-02 05:13:51,235 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/data/ecc05f21f/0441d97d20584ed5b222741b8f89a6f7/FLAG6c1552d5b [2018-12-02 05:13:51,243 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/data/ecc05f21f/0441d97d20584ed5b222741b8f89a6f7 [2018-12-02 05:13:51,245 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 05:13:51,245 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 05:13:51,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 05:13:51,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 05:13:51,248 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 05:13:51,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:13:51" (1/1) ... [2018-12-02 05:13:51,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@284ba15b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:51, skipping insertion in model container [2018-12-02 05:13:51,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:13:51" (1/1) ... [2018-12-02 05:13:51,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 05:13:51,264 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 05:13:51,359 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 05:13:51,362 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 05:13:51,379 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 05:13:51,397 INFO L195 MainTranslator]: Completed translation [2018-12-02 05:13:51,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:51 WrapperNode [2018-12-02 05:13:51,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 05:13:51,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 05:13:51,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 05:13:51,398 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 05:13:51,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:51" (1/1) ... [2018-12-02 05:13:51,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:51" (1/1) ... [2018-12-02 05:13:51,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 05:13:51,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 05:13:51,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 05:13:51,414 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 05:13:51,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:51" (1/1) ... [2018-12-02 05:13:51,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:51" (1/1) ... [2018-12-02 05:13:51,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:51" (1/1) ... [2018-12-02 05:13:51,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:51" (1/1) ... [2018-12-02 05:13:51,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:51" (1/1) ... [2018-12-02 05:13:51,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:51" (1/1) ... [2018-12-02 05:13:51,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:51" (1/1) ... [2018-12-02 05:13:51,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 05:13:51,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 05:13:51,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 05:13:51,465 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 05:13:51,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 05:13:51,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-12-02 05:13:51,497 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-12-02 05:13:51,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-12-02 05:13:51,497 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 05:13:51,497 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 05:13:51,497 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-12-02 05:13:51,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-12-02 05:13:51,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 05:13:51,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 05:13:51,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 05:13:51,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-02 05:13:51,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 05:13:51,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 05:13:51,497 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-12-02 05:13:51,497 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-12-02 05:13:51,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 05:13:51,619 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:13:51,656 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:13:51,696 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 05:13:51,696 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-02 05:13:51,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:13:51 BoogieIcfgContainer [2018-12-02 05:13:51,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 05:13:51,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 05:13:51,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 05:13:51,698 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 05:13:51,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:13:51" (1/3) ... [2018-12-02 05:13:51,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39f8782b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:13:51, skipping insertion in model container [2018-12-02 05:13:51,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:51" (2/3) ... [2018-12-02 05:13:51,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39f8782b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:13:51, skipping insertion in model container [2018-12-02 05:13:51,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:13:51" (3/3) ... [2018-12-02 05:13:51,700 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a_true-unreach-call.c [2018-12-02 05:13:51,705 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 05:13:51,710 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 05:13:51,719 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 05:13:51,737 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 05:13:51,737 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 05:13:51,737 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 05:13:51,737 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 05:13:51,737 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 05:13:51,737 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 05:13:51,737 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 05:13:51,737 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 05:13:51,738 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 05:13:51,747 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-12-02 05:13:51,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-02 05:13:51,751 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:13:51,751 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:13:51,752 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:13:51,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:13:51,755 INFO L82 PathProgramCache]: Analyzing trace with hash -397395125, now seen corresponding path program 1 times [2018-12-02 05:13:51,758 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 05:13:51,758 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-12-02 05:13:51,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:13:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:13:51,803 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:13:51,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:13:51,813 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 05:13:51,821 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:13:51,821 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 05:13:51,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 05:13:51,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 05:13:51,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 05:13:51,832 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-12-02 05:13:51,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:13:51,845 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-12-02 05:13:51,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 05:13:51,846 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-12-02 05:13:51,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:13:51,852 INFO L225 Difference]: With dead ends: 75 [2018-12-02 05:13:51,852 INFO L226 Difference]: Without dead ends: 38 [2018-12-02 05:13:51,854 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 05:13:51,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-02 05:13:51,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-12-02 05:13:51,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-02 05:13:51,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-12-02 05:13:51,886 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2018-12-02 05:13:51,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:13:51,887 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-12-02 05:13:51,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 05:13:51,887 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-12-02 05:13:51,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-02 05:13:51,888 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:13:51,888 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:13:51,888 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:13:51,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:13:51,888 INFO L82 PathProgramCache]: Analyzing trace with hash -2145002868, now seen corresponding path program 1 times [2018-12-02 05:13:51,889 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 05:13:51,889 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-12-02 05:13:51,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:13:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:13:51,936 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:13:51,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:13:51,954 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 05:13:51,965 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:13:51,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 05:13:51,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 05:13:51,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 05:13:51,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 05:13:51,967 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-12-02 05:13:52,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:13:52,011 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-12-02 05:13:52,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 05:13:52,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-12-02 05:13:52,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:13:52,014 INFO L225 Difference]: With dead ends: 56 [2018-12-02 05:13:52,014 INFO L226 Difference]: Without dead ends: 41 [2018-12-02 05:13:52,014 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 05:13:52,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-02 05:13:52,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-02 05:13:52,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-02 05:13:52,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2018-12-02 05:13:52,020 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22 [2018-12-02 05:13:52,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:13:52,020 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-12-02 05:13:52,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 05:13:52,020 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2018-12-02 05:13:52,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-02 05:13:52,021 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:13:52,021 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:13:52,021 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:13:52,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:13:52,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1859452024, now seen corresponding path program 1 times [2018-12-02 05:13:52,021 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 05:13:52,022 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-12-02 05:13:52,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:13:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:13:52,064 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:13:52,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:13:52,228 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 05:13:52,235 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:13:52,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-02 05:13:52,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 05:13:52,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 05:13:52,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-02 05:13:52,236 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 8 states. [2018-12-02 05:13:53,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:13:53,250 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2018-12-02 05:13:53,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 05:13:53,251 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-12-02 05:13:53,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:13:53,252 INFO L225 Difference]: With dead ends: 63 [2018-12-02 05:13:53,252 INFO L226 Difference]: Without dead ends: 43 [2018-12-02 05:13:53,252 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-02 05:13:53,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-02 05:13:53,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-02 05:13:53,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-02 05:13:53,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2018-12-02 05:13:53,256 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 23 [2018-12-02 05:13:53,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:13:53,256 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-12-02 05:13:53,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 05:13:53,256 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-12-02 05:13:53,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-02 05:13:53,257 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:13:53,257 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:13:53,257 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:13:53,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:13:53,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1911602824, now seen corresponding path program 1 times [2018-12-02 05:13:53,258 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 05:13:53,258 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-12-02 05:13:53,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:13:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:13:53,296 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:13:53,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:13:53,303 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 05:13:53,310 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:13:53,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 05:13:53,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 05:13:53,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 05:13:53,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 05:13:53,311 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 4 states. [2018-12-02 05:13:53,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:13:53,360 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2018-12-02 05:13:53,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 05:13:53,361 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-12-02 05:13:53,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:13:53,362 INFO L225 Difference]: With dead ends: 61 [2018-12-02 05:13:53,362 INFO L226 Difference]: Without dead ends: 46 [2018-12-02 05:13:53,362 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 05:13:53,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-12-02 05:13:53,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2018-12-02 05:13:53,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-02 05:13:53,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2018-12-02 05:13:53,366 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 24 [2018-12-02 05:13:53,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:13:53,366 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-12-02 05:13:53,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 05:13:53,366 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-12-02 05:13:53,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-02 05:13:53,367 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:13:53,367 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:13:53,367 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:13:53,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:13:53,367 INFO L82 PathProgramCache]: Analyzing trace with hash 2064132100, now seen corresponding path program 1 times [2018-12-02 05:13:53,367 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 05:13:53,368 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-12-02 05:13:53,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:13:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:13:53,408 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:13:53,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:13:53,498 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 05:13:53,505 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:13:53,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-02 05:13:53,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 05:13:53,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 05:13:53,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-02 05:13:53,506 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 8 states. [2018-12-02 05:13:56,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:13:56,318 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2018-12-02 05:13:56,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 05:13:56,319 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-12-02 05:13:56,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:13:56,319 INFO L225 Difference]: With dead ends: 62 [2018-12-02 05:13:56,319 INFO L226 Difference]: Without dead ends: 42 [2018-12-02 05:13:56,320 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-02 05:13:56,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-02 05:13:56,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2018-12-02 05:13:56,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-02 05:13:56,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-12-02 05:13:56,323 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 25 [2018-12-02 05:13:56,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:13:56,323 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-12-02 05:13:56,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 05:13:56,323 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-12-02 05:13:56,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-02 05:13:56,324 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:13:56,324 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:13:56,324 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:13:56,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:13:56,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1438845801, now seen corresponding path program 1 times [2018-12-02 05:13:56,325 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 05:13:56,325 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-12-02 05:13:56,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:13:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:13:56,382 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:13:56,391 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 05:13:56,392 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 05:13:56,399 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:13:56,399 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 05:13:56,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 05:13:56,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 05:13:56,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 05:13:56,400 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 4 states. [2018-12-02 05:13:56,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:13:56,412 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2018-12-02 05:13:56,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 05:13:56,413 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-12-02 05:13:56,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:13:56,414 INFO L225 Difference]: With dead ends: 58 [2018-12-02 05:13:56,414 INFO L226 Difference]: Without dead ends: 43 [2018-12-02 05:13:56,415 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 05:13:56,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-02 05:13:56,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-02 05:13:56,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-02 05:13:56,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2018-12-02 05:13:56,419 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 30 [2018-12-02 05:13:56,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:13:56,420 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2018-12-02 05:13:56,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 05:13:56,420 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2018-12-02 05:13:56,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-02 05:13:56,421 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:13:56,421 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:13:56,421 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:13:56,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:13:56,421 INFO L82 PathProgramCache]: Analyzing trace with hash 394703345, now seen corresponding path program 1 times [2018-12-02 05:13:56,422 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 05:13:56,422 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-12-02 05:13:56,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:13:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:13:56,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:13:56,615 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 05:13:56,615 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 05:13:56,623 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:13:56,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-02 05:13:56,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 05:13:56,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 05:13:56,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-02 05:13:56,623 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 8 states. [2018-12-02 05:13:57,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:13:57,540 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2018-12-02 05:13:57,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 05:13:57,541 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-12-02 05:13:57,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:13:57,542 INFO L225 Difference]: With dead ends: 63 [2018-12-02 05:13:57,542 INFO L226 Difference]: Without dead ends: 43 [2018-12-02 05:13:57,543 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-02 05:13:57,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-02 05:13:57,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-02 05:13:57,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-02 05:13:57,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2018-12-02 05:13:57,547 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 31 [2018-12-02 05:13:57,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:13:57,548 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2018-12-02 05:13:57,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 05:13:57,548 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2018-12-02 05:13:57,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-02 05:13:57,549 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:13:57,549 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] [2018-12-02 05:13:57,549 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:13:57,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:13:57,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1599971557, now seen corresponding path program 1 times [2018-12-02 05:13:57,550 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 05:13:57,550 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-12-02 05:13:57,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:13:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:13:57,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:13:57,615 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 05:13:57,615 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 05:13:57,623 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:13:57,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 05:13:57,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 05:13:57,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 05:13:57,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 05:13:57,624 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 4 states. [2018-12-02 05:13:57,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:13:57,633 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2018-12-02 05:13:57,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 05:13:57,633 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-12-02 05:13:57,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:13:57,634 INFO L225 Difference]: With dead ends: 59 [2018-12-02 05:13:57,634 INFO L226 Difference]: Without dead ends: 44 [2018-12-02 05:13:57,634 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 05:13:57,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-02 05:13:57,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2018-12-02 05:13:57,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-02 05:13:57,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-12-02 05:13:57,637 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 32 [2018-12-02 05:13:57,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:13:57,637 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-12-02 05:13:57,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 05:13:57,638 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2018-12-02 05:13:57,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-02 05:13:57,638 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:13:57,638 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:13:57,639 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:13:57,639 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:13:57,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1200719566, now seen corresponding path program 1 times [2018-12-02 05:13:57,639 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 05:13:57,639 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-12-02 05:13:57,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:13:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:13:57,695 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:13:57,787 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-02 05:13:57,787 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 05:13:57,795 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:13:57,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 05:13:57,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 05:13:57,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 05:13:57,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-02 05:13:57,796 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 5 states. [2018-12-02 05:13:57,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:13:57,890 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2018-12-02 05:13:57,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 05:13:57,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-12-02 05:13:57,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:13:57,892 INFO L225 Difference]: With dead ends: 57 [2018-12-02 05:13:57,892 INFO L226 Difference]: Without dead ends: 41 [2018-12-02 05:13:57,892 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-02 05:13:57,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-02 05:13:57,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-02 05:13:57,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-02 05:13:57,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2018-12-02 05:13:57,894 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 32 [2018-12-02 05:13:57,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:13:57,895 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2018-12-02 05:13:57,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 05:13:57,895 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2018-12-02 05:13:57,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-02 05:13:57,895 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:13:57,895 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:13:57,895 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:13:57,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:13:57,896 INFO L82 PathProgramCache]: Analyzing trace with hash 391372940, now seen corresponding path program 1 times [2018-12-02 05:13:57,896 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 05:13:57,896 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-12-02 05:13:57,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:13:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:13:57,950 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:13:58,012 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-02 05:13:58,012 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 05:13:58,020 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:13:58,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-02 05:13:58,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 05:13:58,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 05:13:58,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-02 05:13:58,021 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 8 states. [2018-12-02 05:13:58,308 WARN L180 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-12-02 05:13:58,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:13:58,447 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2018-12-02 05:13:58,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 05:13:58,447 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-12-02 05:13:58,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:13:58,448 INFO L225 Difference]: With dead ends: 48 [2018-12-02 05:13:58,448 INFO L226 Difference]: Without dead ends: 45 [2018-12-02 05:13:58,448 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-12-02 05:13:58,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-12-02 05:13:58,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-12-02 05:13:58,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-02 05:13:58,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2018-12-02 05:13:58,451 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 32 [2018-12-02 05:13:58,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:13:58,451 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2018-12-02 05:13:58,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 05:13:58,452 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2018-12-02 05:13:58,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-02 05:13:58,452 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:13:58,452 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] [2018-12-02 05:13:58,452 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:13:58,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:13:58,452 INFO L82 PathProgramCache]: Analyzing trace with hash -477473555, now seen corresponding path program 1 times [2018-12-02 05:13:58,453 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 05:13:58,453 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-12-02 05:13:58,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:13:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:13:58,512 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:13:58,641 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 05:13:58,641 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 05:13:58,649 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:13:58,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-02 05:13:58,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 05:13:58,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 05:13:58,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-02 05:13:58,650 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 8 states. [2018-12-02 05:13:59,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:13:59,522 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2018-12-02 05:13:59,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 05:13:59,523 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2018-12-02 05:13:59,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:13:59,524 INFO L225 Difference]: With dead ends: 62 [2018-12-02 05:13:59,524 INFO L226 Difference]: Without dead ends: 37 [2018-12-02 05:13:59,524 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-02 05:13:59,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-12-02 05:13:59,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-12-02 05:13:59,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-02 05:13:59,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-12-02 05:13:59,527 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 33 [2018-12-02 05:13:59,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:13:59,527 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-12-02 05:13:59,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 05:13:59,527 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-12-02 05:13:59,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-12-02 05:13:59,527 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:13:59,528 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:13:59,528 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:13:59,528 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:13:59,528 INFO L82 PathProgramCache]: Analyzing trace with hash -25386389, now seen corresponding path program 1 times [2018-12-02 05:13:59,528 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 05:13:59,528 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-12-02 05:13:59,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:13:59,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:13:59,616 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:13:59,801 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-02 05:13:59,801 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 05:13:59,809 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:13:59,809 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-12-02 05:13:59,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-02 05:13:59,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-02 05:13:59,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-12-02 05:13:59,810 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 13 states. [2018-12-02 05:14:00,339 WARN L180 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-12-02 05:14:00,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:14:00,782 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2018-12-02 05:14:00,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-02 05:14:00,782 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2018-12-02 05:14:00,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:14:00,782 INFO L225 Difference]: With dead ends: 37 [2018-12-02 05:14:00,782 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 05:14:00,783 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2018-12-02 05:14:00,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 05:14:00,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 05:14:00,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 05:14:00,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 05:14:00,783 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2018-12-02 05:14:00,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:14:00,783 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 05:14:00,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-02 05:14:00,783 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 05:14:00,783 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 05:14:00,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-02 05:14:00,994 WARN L180 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 21 [2018-12-02 05:14:00,995 INFO L448 ceAbstractionStarter]: For program point L31(lines 31 42) no Hoare annotation was computed. [2018-12-02 05:14:00,996 INFO L448 ceAbstractionStarter]: For program point __fpclassify_doubleFINAL(lines 18 43) no Hoare annotation was computed. [2018-12-02 05:14:00,996 INFO L448 ceAbstractionStarter]: For program point L21-1(lines 21 26) no Hoare annotation was computed. [2018-12-02 05:14:00,996 INFO L444 ceAbstractionStarter]: At program point L21-2(lines 21 26) the Hoare annotation is: (= |__fpclassify_double_#in~x| __fpclassify_double_~x) [2018-12-02 05:14:00,996 INFO L448 ceAbstractionStarter]: For program point L21-3(lines 18 43) no Hoare annotation was computed. [2018-12-02 05:14:00,996 INFO L451 ceAbstractionStarter]: At program point __fpclassify_doubleENTRY(lines 18 43) the Hoare annotation is: true [2018-12-02 05:14:00,996 INFO L448 ceAbstractionStarter]: For program point L38(lines 38 42) no Hoare annotation was computed. [2018-12-02 05:14:00,996 INFO L448 ceAbstractionStarter]: For program point L34(lines 34 42) no Hoare annotation was computed. [2018-12-02 05:14:00,996 INFO L448 ceAbstractionStarter]: For program point __fpclassify_doubleEXIT(lines 18 43) no Hoare annotation was computed. [2018-12-02 05:14:00,996 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-02 05:14:00,996 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-02 05:14:00,996 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-02 05:14:00,996 INFO L448 ceAbstractionStarter]: For program point __signbit_doubleFINAL(lines 54 64) no Hoare annotation was computed. [2018-12-02 05:14:00,996 INFO L448 ceAbstractionStarter]: For program point L57-1(lines 57 61) no Hoare annotation was computed. [2018-12-02 05:14:00,996 INFO L448 ceAbstractionStarter]: For program point __signbit_doubleEXIT(lines 54 64) no Hoare annotation was computed. [2018-12-02 05:14:00,996 INFO L444 ceAbstractionStarter]: At program point L57-2(lines 57 61) the Hoare annotation is: (= |__signbit_double_#in~x| __signbit_double_~x) [2018-12-02 05:14:00,996 INFO L448 ceAbstractionStarter]: For program point L57-3(lines 57 61) no Hoare annotation was computed. [2018-12-02 05:14:00,996 INFO L451 ceAbstractionStarter]: At program point __signbit_doubleENTRY(lines 54 64) the Hoare annotation is: true [2018-12-02 05:14:00,996 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-02 05:14:00,997 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-02 05:14:00,997 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-02 05:14:00,997 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-02 05:14:00,997 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 66 85) the Hoare annotation is: true [2018-12-02 05:14:00,997 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 80) no Hoare annotation was computed. [2018-12-02 05:14:00,997 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 66 85) no Hoare annotation was computed. [2018-12-02 05:14:00,997 INFO L448 ceAbstractionStarter]: For program point L80(line 80) no Hoare annotation was computed. [2018-12-02 05:14:00,997 INFO L448 ceAbstractionStarter]: For program point L79(line 79) no Hoare annotation was computed. [2018-12-02 05:14:00,997 INFO L444 ceAbstractionStarter]: At program point L79-1(line 79) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 11 53)))) (and (= main_~res~0 .cse0) (= (_ +zero 11 53) main_~x~0) |main_#t~short11| (= main_~y~0 .cse0))) [2018-12-02 05:14:00,997 INFO L448 ceAbstractionStarter]: For program point L79-2(line 79) no Hoare annotation was computed. [2018-12-02 05:14:00,997 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 66 85) no Hoare annotation was computed. [2018-12-02 05:14:00,997 INFO L444 ceAbstractionStarter]: At program point L76(line 76) the Hoare annotation is: (and (= (_ +zero 11 53) main_~x~0) (= main_~y~0 (fp.neg (_ +zero 11 53)))) [2018-12-02 05:14:00,997 INFO L448 ceAbstractionStarter]: For program point L76-1(line 76) no Hoare annotation was computed. [2018-12-02 05:14:00,997 INFO L448 ceAbstractionStarter]: For program point L79-4(lines 79 82) no Hoare annotation was computed. [2018-12-02 05:14:00,997 INFO L448 ceAbstractionStarter]: For program point fmin_doubleFINAL(lines 45 52) no Hoare annotation was computed. [2018-12-02 05:14:00,997 INFO L451 ceAbstractionStarter]: At program point fmin_doubleENTRY(lines 45 52) the Hoare annotation is: true [2018-12-02 05:14:00,997 INFO L448 ceAbstractionStarter]: For program point fmin_doubleEXIT(lines 45 52) no Hoare annotation was computed. [2018-12-02 05:14:00,997 INFO L448 ceAbstractionStarter]: For program point L51(line 51) no Hoare annotation was computed. [2018-12-02 05:14:00,997 INFO L448 ceAbstractionStarter]: For program point L51-2(line 51) no Hoare annotation was computed. [2018-12-02 05:14:00,998 INFO L444 ceAbstractionStarter]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 (= fmin_double_~x |fmin_double_#in~x|))) (or (and (exists ((v_prenex_10 (_ BitVec 64))) (and (not (bvule ((_ extract 63 32) v_prenex_10) (_ bv1048575 32))) (= |fmin_double_#in~x| (fp ((_ extract 63 63) v_prenex_10) ((_ extract 62 52) v_prenex_10) ((_ extract 51 0) v_prenex_10))))) .cse0) (and (= fmin_double_~y |fmin_double_#in~y|) .cse0))) [2018-12-02 05:14:00,998 INFO L448 ceAbstractionStarter]: For program point L48-1(lines 48 49) no Hoare annotation was computed. [2018-12-02 05:14:00,998 INFO L444 ceAbstractionStarter]: At program point L46(line 46) the Hoare annotation is: (and (= fmin_double_~y |fmin_double_#in~y|) (= fmin_double_~x |fmin_double_#in~x|)) [2018-12-02 05:14:00,998 INFO L448 ceAbstractionStarter]: For program point L46-1(lines 46 47) no Hoare annotation was computed. [2018-12-02 05:14:01,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 05:14:01 BoogieIcfgContainer [2018-12-02 05:14:01,005 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 05:14:01,005 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 05:14:01,005 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 05:14:01,005 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 05:14:01,006 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:13:51" (3/4) ... [2018-12-02 05:14:01,008 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 05:14:01,012 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2018-12-02 05:14:01,012 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-02 05:14:01,012 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_double [2018-12-02 05:14:01,012 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-02 05:14:01,012 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fmin_double [2018-12-02 05:14:01,015 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2018-12-02 05:14:01,015 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-12-02 05:14:01,015 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-02 05:14:01,030 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-12-02 05:14:01,030 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-12-02 05:14:01,045 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f2d12a93-2672-4b8d-9e03-577afe588fa7/bin-2019/utaipan/witness.graphml [2018-12-02 05:14:01,046 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 05:14:01,046 INFO L168 Benchmark]: Toolchain (without parser) took 9801.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 206.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -124.4 MB). Peak memory consumption was 82.1 MB. Max. memory is 11.5 GB. [2018-12-02 05:14:01,047 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 05:14:01,047 INFO L168 Benchmark]: CACSL2BoogieTranslator took 151.75 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 928.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-12-02 05:14:01,047 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.88 ms. Allocated memory is still 1.0 GB. Free memory is still 928.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 05:14:01,048 INFO L168 Benchmark]: Boogie Preprocessor took 51.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 928.6 MB in the beginning and 1.1 GB in the end (delta: -200.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-12-02 05:14:01,048 INFO L168 Benchmark]: RCFGBuilder took 230.85 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. [2018-12-02 05:14:01,048 INFO L168 Benchmark]: TraceAbstraction took 9308.56 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 41.8 MB). Peak memory consumption was 107.8 MB. Max. memory is 11.5 GB. [2018-12-02 05:14:01,049 INFO L168 Benchmark]: Witness Printer took 40.49 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. [2018-12-02 05:14:01,050 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 151.75 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 928.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.88 ms. Allocated memory is still 1.0 GB. Free memory is still 928.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 51.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 928.6 MB in the beginning and 1.1 GB in the end (delta: -200.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 230.85 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 9308.56 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 41.8 MB). Peak memory consumption was 107.8 MB. Max. memory is 11.5 GB. * Witness Printer took 40.49 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: - PositiveResult [Line: 80]: 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: 21]: Loop Invariant Derived loop invariant: \old(x) == x - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. SAFE Result, 9.2s OverallTime, 12 OverallIterations, 2 TraceHistogramMax, 7.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 479 SDtfs, 187 SDslu, 1586 SDs, 0 SdLazy, 605 SolverSat, 20 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 5.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 361 GetRequests, 284 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=10, 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, 12 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 41 PreInvPairs, 50 NumberOfFragments, 69 HoareAnnotationTreeSize, 41 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 43 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 345 NumberOfCodeBlocks, 345 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 333 ConstructedInterpolants, 40 QuantifiedInterpolants, 43044 SizeOfPredicates, 29 NumberOfNonLiveVariables, 1082 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...