./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1230_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1230_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/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 b865bb4da04412be07ba7e2426d2224bb04a2953 ............................................................................................................................................................................................................................................................................................................................................................................................................ 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_47c4a420-f86d-428c-894a-6d2a7c4c1769/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1230_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/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 b865bb4da04412be07ba7e2426d2224bb04a2953 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 12:14:05,840 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 12:14:05,841 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 12:14:05,850 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 12:14:05,850 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 12:14:05,851 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 12:14:05,852 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 12:14:05,853 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 12:14:05,854 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 12:14:05,855 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 12:14:05,855 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 12:14:05,855 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 12:14:05,856 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 12:14:05,857 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 12:14:05,858 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 12:14:05,858 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 12:14:05,859 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 12:14:05,860 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 12:14:05,862 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 12:14:05,863 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 12:14:05,864 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 12:14:05,864 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 12:14:05,866 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 12:14:05,866 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 12:14:05,867 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 12:14:05,867 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 12:14:05,868 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 12:14:05,869 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 12:14:05,869 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 12:14:05,870 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 12:14:05,870 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 12:14:05,871 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 12:14:05,871 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 12:14:05,871 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 12:14:05,872 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 12:14:05,872 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 12:14:05,873 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 12:14:05,883 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 12:14:05,884 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 12:14:05,884 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 12:14:05,884 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 12:14:05,885 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 12:14:05,885 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 12:14:05,885 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 12:14:05,885 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 12:14:05,885 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 12:14:05,885 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 12:14:05,885 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 12:14:05,886 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 12:14:05,886 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 12:14:05,886 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 12:14:05,886 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 12:14:05,887 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 12:14:05,887 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 12:14:05,887 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 12:14:05,887 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 12:14:05,887 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 12:14:05,887 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 12:14:05,887 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 12:14:05,887 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 12:14:05,888 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 12:14:05,888 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 12:14:05,888 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 12:14:05,888 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 12:14:05,888 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 12:14:05,888 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 12:14:05,888 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:14:05,889 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 12:14:05,889 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 12:14:05,889 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 12:14:05,889 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 12:14:05,889 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 12:14:05,889 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 12:14:05,889 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 12:14:05,889 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_47c4a420-f86d-428c-894a-6d2a7c4c1769/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 -> b865bb4da04412be07ba7e2426d2224bb04a2953 [2018-11-18 12:14:05,911 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 12:14:05,919 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 12:14:05,922 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 12:14:05,923 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 12:14:05,923 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 12:14:05,924 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1230_true-unreach-call.c [2018-11-18 12:14:05,957 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/bin-2019/utaipan/data/09ad82ac1/ae87478550084a9f944b1cc29e218d30/FLAG322fb7a7e [2018-11-18 12:14:06,359 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 12:14:06,360 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/sv-benchmarks/c/float-newlib/double_req_bl_1230_true-unreach-call.c [2018-11-18 12:14:06,364 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/bin-2019/utaipan/data/09ad82ac1/ae87478550084a9f944b1cc29e218d30/FLAG322fb7a7e [2018-11-18 12:14:06,372 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/bin-2019/utaipan/data/09ad82ac1/ae87478550084a9f944b1cc29e218d30 [2018-11-18 12:14:06,374 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 12:14:06,375 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 12:14:06,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 12:14:06,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 12:14:06,378 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 12:14:06,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:14:06" (1/1) ... [2018-11-18 12:14:06,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63274aa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:06, skipping insertion in model container [2018-11-18 12:14:06,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:14:06" (1/1) ... [2018-11-18 12:14:06,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 12:14:06,400 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 12:14:06,518 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:14:06,520 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 12:14:06,534 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:14:06,547 INFO L195 MainTranslator]: Completed translation [2018-11-18 12:14:06,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:06 WrapperNode [2018-11-18 12:14:06,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 12:14:06,548 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 12:14:06,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 12:14:06,548 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 12:14:06,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:06" (1/1) ... [2018-11-18 12:14:06,559 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:06" (1/1) ... [2018-11-18 12:14:06,563 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 12:14:06,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 12:14:06,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 12:14:06,564 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 12:14:06,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:06" (1/1) ... [2018-11-18 12:14:06,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:06" (1/1) ... [2018-11-18 12:14:06,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:06" (1/1) ... [2018-11-18 12:14:06,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:06" (1/1) ... [2018-11-18 12:14:06,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:06" (1/1) ... [2018-11-18 12:14:06,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:06" (1/1) ... [2018-11-18 12:14:06,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:06" (1/1) ... [2018-11-18 12:14:06,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 12:14:06,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 12:14:06,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 12:14:06,621 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 12:14:06,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/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 [2018-11-18 12:14:06,654 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-11-18 12:14:06,654 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-11-18 12:14:06,654 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 12:14:06,654 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 12:14:06,654 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-11-18 12:14:06,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-11-18 12:14:06,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 12:14:06,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 12:14:06,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-18 12:14:06,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 12:14:06,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 12:14:06,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 12:14:06,655 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-11-18 12:14:06,655 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-11-18 12:14:06,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 12:14:06,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 12:14:06,809 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 12:14:06,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:14:06 BoogieIcfgContainer [2018-11-18 12:14:06,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 12:14:06,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 12:14:06,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 12:14:06,813 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 12:14:06,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 12:14:06" (1/3) ... [2018-11-18 12:14:06,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51fef644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:14:06, skipping insertion in model container [2018-11-18 12:14:06,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:06" (2/3) ... [2018-11-18 12:14:06,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51fef644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:14:06, skipping insertion in model container [2018-11-18 12:14:06,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:14:06" (3/3) ... [2018-11-18 12:14:06,815 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230_true-unreach-call.c [2018-11-18 12:14:06,821 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 12:14:06,825 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 12:14:06,834 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 12:14:06,851 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 12:14:06,851 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 12:14:06,852 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 12:14:06,852 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 12:14:06,852 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 12:14:06,852 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 12:14:06,852 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 12:14:06,852 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 12:14:06,863 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-11-18 12:14:06,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 12:14:06,866 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:06,867 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:06,870 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:14:06,873 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:06,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1742016872, now seen corresponding path program 1 times [2018-11-18 12:14:06,875 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:14:06,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:06,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:14:06,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:06,903 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:14:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:06,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:14:06,959 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:14:06,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 12:14:06,959 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 12:14:06,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 12:14:06,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 12:14:06,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 12:14:06,972 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2018-11-18 12:14:06,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:06,988 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2018-11-18 12:14:06,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 12:14:06,989 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-11-18 12:14:06,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:06,997 INFO L225 Difference]: With dead ends: 71 [2018-11-18 12:14:06,998 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 12:14:07,000 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 12:14:07,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 12:14:07,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-18 12:14:07,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 12:14:07,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-11-18 12:14:07,029 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2018-11-18 12:14:07,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:07,029 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-11-18 12:14:07,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 12:14:07,029 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-11-18 12:14:07,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 12:14:07,031 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:07,031 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:07,032 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:14:07,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:07,032 INFO L82 PathProgramCache]: Analyzing trace with hash -581801934, now seen corresponding path program 1 times [2018-11-18 12:14:07,032 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:14:07,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:07,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:14:07,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:07,033 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:14:07,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:07,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:14:07,104 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:14:07,104 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 12:14:07,104 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 12:14:07,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 12:14:07,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 12:14:07,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:14:07,106 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-11-18 12:14:07,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:07,144 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2018-11-18 12:14:07,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 12:14:07,144 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-11-18 12:14:07,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:07,146 INFO L225 Difference]: With dead ends: 51 [2018-11-18 12:14:07,146 INFO L226 Difference]: Without dead ends: 40 [2018-11-18 12:14:07,146 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:14:07,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-18 12:14:07,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-18 12:14:07,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 12:14:07,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-18 12:14:07,152 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2018-11-18 12:14:07,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:07,152 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-18 12:14:07,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 12:14:07,153 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-18 12:14:07,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 12:14:07,153 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:07,153 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:07,154 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:14:07,154 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:07,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1393261537, now seen corresponding path program 1 times [2018-11-18 12:14:07,154 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:14:07,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:07,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:14:07,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:07,155 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:14:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:07,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:14:07,201 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:14:07,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 12:14:07,201 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 12:14:07,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 12:14:07,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 12:14:07,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:14:07,202 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-11-18 12:14:07,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:07,231 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2018-11-18 12:14:07,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 12:14:07,232 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-18 12:14:07,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:07,233 INFO L225 Difference]: With dead ends: 55 [2018-11-18 12:14:07,233 INFO L226 Difference]: Without dead ends: 44 [2018-11-18 12:14:07,233 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:14:07,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-18 12:14:07,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-11-18 12:14:07,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 12:14:07,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-18 12:14:07,239 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2018-11-18 12:14:07,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:07,239 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-18 12:14:07,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 12:14:07,239 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-18 12:14:07,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 12:14:07,239 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:07,239 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:07,240 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:14:07,240 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:07,240 INFO L82 PathProgramCache]: Analyzing trace with hash 114290272, now seen corresponding path program 1 times [2018-11-18 12:14:07,240 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:14:07,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:07,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:14:07,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:07,241 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:14:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 12:14:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 12:14:07,281 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 12:14:07,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 12:14:07 BoogieIcfgContainer [2018-11-18 12:14:07,300 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 12:14:07,301 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 12:14:07,301 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 12:14:07,301 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 12:14:07,301 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:14:06" (3/4) ... [2018-11-18 12:14:07,305 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 12:14:07,305 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 12:14:07,305 INFO L168 Benchmark]: Toolchain (without parser) took 930.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.0 MB). Free memory was 959.1 MB in the beginning and 1.1 GB in the end (delta: -129.4 MB). Peak memory consumption was 43.6 MB. Max. memory is 11.5 GB. [2018-11-18 12:14:07,307 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:14:07,307 INFO L168 Benchmark]: CACSL2BoogieTranslator took 171.87 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 945.6 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2018-11-18 12:14:07,308 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.50 ms. Allocated memory is still 1.0 GB. Free memory is still 945.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:14:07,308 INFO L168 Benchmark]: Boogie Preprocessor took 57.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.0 MB). Free memory was 945.6 MB in the beginning and 1.2 GB in the end (delta: -222.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-18 12:14:07,309 INFO L168 Benchmark]: RCFGBuilder took 189.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. [2018-11-18 12:14:07,309 INFO L168 Benchmark]: TraceAbstraction took 490.06 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: 55.6 MB). Peak memory consumption was 55.6 MB. Max. memory is 11.5 GB. [2018-11-18 12:14:07,310 INFO L168 Benchmark]: Witness Printer took 4.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:14:07,312 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 171.87 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 945.6 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.50 ms. Allocated memory is still 1.0 GB. Free memory is still 945.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 57.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.0 MB). Free memory was 945.6 MB in the beginning and 1.2 GB in the end (delta: -222.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 189.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 490.06 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: 55.6 MB). Peak memory consumption was 55.6 MB. Max. memory is 11.5 GB. * Witness Printer took 4.14 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: 66]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 61. Possible FailurePath: [L61] double x = 0.0 / 0.0; [L62] double y = 0.0 / 0.0; [L63] CALL, EXPR fmin_double(x, y) VAL [\old(x)=4294967301, \old(y)=4294967302] [L45] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967301] [L18] __uint32_t msw, lsw; VAL [\old(x)=4294967301, x=4294967301] [L21] FCALL ieee_double_shape_type ew_u; [L22] FCALL ew_u.value = (x) [L23] EXPR, FCALL ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR, FCALL ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L25] COND FALSE !(0) VAL [\old(x)=4294967301, lsw=4294967297, msw=4293918721, x=4294967301] [L27-L28] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967301, lsw=4294967297, msw=4293918721, x=4294967301] [L30-L31] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967301, lsw=4294967297, msw=4293918721, x=4294967301] [L33-L34] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967301, lsw=4294967297, msw=4293918721, x=4294967301] [L37-L38] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L41] RET return 0; VAL [\old(x)=4294967301, \result=0, lsw=4294967297, msw=4293918721, x=4294967301] [L45] EXPR __fpclassify_double(x) VAL [\old(x)=4294967301, \old(y)=4294967302, __fpclassify_double(x)=0, x=4294967301, y=4294967302] [L45] COND TRUE __fpclassify_double(x) == 0 [L46] RET return y; VAL [\old(x)=4294967301, \old(y)=4294967302, \result=4294967302, x=4294967301, y=4294967302] [L63] EXPR fmin_double(x, y) VAL [fmin_double(x, y)=4294967302, x=4294967301, y=4294967302] [L63] double res = fmin_double(x, y); [L65] CALL, EXPR isnan_double(res) VAL [\old(x)=4294967302] [L16] RET return x != x; VAL [\old(x)=4294967302, \result=0, x=4294967302] [L65] EXPR isnan_double(res) VAL [isnan_double(res)=0, res=4294967302, x=4294967301, y=4294967302] [L65] COND TRUE !isnan_double(res) [L66] __VERIFIER_error() VAL [res=4294967302, x=4294967301, y=4294967302] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 129 SDtfs, 0 SDslu, 152 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 2582 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5842f4b [2018-11-18 12:14:08,753 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 12:14:08,754 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 12:14:08,761 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 12:14:08,761 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 12:14:08,762 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 12:14:08,763 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 12:14:08,764 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 12:14:08,765 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 12:14:08,765 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 12:14:08,766 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 12:14:08,766 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 12:14:08,767 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 12:14:08,768 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 12:14:08,769 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 12:14:08,769 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 12:14:08,770 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 12:14:08,771 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 12:14:08,772 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 12:14:08,773 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 12:14:08,774 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 12:14:08,775 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 12:14:08,777 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 12:14:08,777 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 12:14:08,777 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 12:14:08,778 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 12:14:08,778 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 12:14:08,779 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 12:14:08,779 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 12:14:08,780 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 12:14:08,780 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 12:14:08,781 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 12:14:08,781 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 12:14:08,781 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 12:14:08,782 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 12:14:08,782 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 12:14:08,782 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-18 12:14:08,793 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 12:14:08,793 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 12:14:08,793 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 12:14:08,793 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 12:14:08,794 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 12:14:08,794 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 12:14:08,794 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 12:14:08,794 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 12:14:08,794 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 12:14:08,794 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 12:14:08,795 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 12:14:08,795 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 12:14:08,795 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 12:14:08,795 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 12:14:08,795 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 12:14:08,795 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 12:14:08,796 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 12:14:08,796 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 12:14:08,796 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 12:14:08,796 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 12:14:08,796 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 12:14:08,796 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 12:14:08,796 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 12:14:08,797 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 12:14:08,797 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 12:14:08,797 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 12:14:08,797 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 12:14:08,797 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:14:08,797 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 12:14:08,797 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 12:14:08,797 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 12:14:08,798 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 12:14:08,798 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 12:14:08,798 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 12:14:08,798 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 12:14:08,798 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_47c4a420-f86d-428c-894a-6d2a7c4c1769/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 -> b865bb4da04412be07ba7e2426d2224bb04a2953 [2018-11-18 12:14:08,827 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 12:14:08,836 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 12:14:08,838 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 12:14:08,839 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 12:14:08,840 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 12:14:08,840 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1230_true-unreach-call.c [2018-11-18 12:14:08,875 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/bin-2019/utaipan/data/31a4effc9/22e296dbc7e14f36801b1c805db60bfd/FLAG8816752c2 [2018-11-18 12:14:09,272 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 12:14:09,272 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/sv-benchmarks/c/float-newlib/double_req_bl_1230_true-unreach-call.c [2018-11-18 12:14:09,277 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/bin-2019/utaipan/data/31a4effc9/22e296dbc7e14f36801b1c805db60bfd/FLAG8816752c2 [2018-11-18 12:14:09,285 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/bin-2019/utaipan/data/31a4effc9/22e296dbc7e14f36801b1c805db60bfd [2018-11-18 12:14:09,287 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 12:14:09,288 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 12:14:09,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 12:14:09,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 12:14:09,291 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 12:14:09,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:14:09" (1/1) ... [2018-11-18 12:14:09,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@de8ed5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:09, skipping insertion in model container [2018-11-18 12:14:09,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:14:09" (1/1) ... [2018-11-18 12:14:09,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 12:14:09,314 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 12:14:09,434 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:14:09,438 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 12:14:09,456 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:14:09,474 INFO L195 MainTranslator]: Completed translation [2018-11-18 12:14:09,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:09 WrapperNode [2018-11-18 12:14:09,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 12:14:09,475 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 12:14:09,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 12:14:09,475 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 12:14:09,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:09" (1/1) ... [2018-11-18 12:14:09,488 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:09" (1/1) ... [2018-11-18 12:14:09,494 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 12:14:09,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 12:14:09,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 12:14:09,494 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 12:14:09,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:09" (1/1) ... [2018-11-18 12:14:09,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:09" (1/1) ... [2018-11-18 12:14:09,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:09" (1/1) ... [2018-11-18 12:14:09,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:09" (1/1) ... [2018-11-18 12:14:09,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:09" (1/1) ... [2018-11-18 12:14:09,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:09" (1/1) ... [2018-11-18 12:14:09,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:09" (1/1) ... [2018-11-18 12:14:09,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 12:14:09,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 12:14:09,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 12:14:09,520 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 12:14:09,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/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 [2018-11-18 12:14:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-11-18 12:14:09,597 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-11-18 12:14:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-11-18 12:14:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 12:14:09,598 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 12:14:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-11-18 12:14:09,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-11-18 12:14:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 12:14:09,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 12:14:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 12:14:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 12:14:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 12:14:09,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 12:14:09,599 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-11-18 12:14:09,599 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-11-18 12:14:09,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 12:14:09,715 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 12:14:09,781 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 12:14:09,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:14:09 BoogieIcfgContainer [2018-11-18 12:14:09,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 12:14:09,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 12:14:09,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 12:14:09,784 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 12:14:09,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 12:14:09" (1/3) ... [2018-11-18 12:14:09,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d5a15c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:14:09, skipping insertion in model container [2018-11-18 12:14:09,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:09" (2/3) ... [2018-11-18 12:14:09,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d5a15c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:14:09, skipping insertion in model container [2018-11-18 12:14:09,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:14:09" (3/3) ... [2018-11-18 12:14:09,786 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230_true-unreach-call.c [2018-11-18 12:14:09,792 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 12:14:09,797 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 12:14:09,809 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 12:14:09,829 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 12:14:09,829 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 12:14:09,829 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 12:14:09,829 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 12:14:09,829 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 12:14:09,829 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 12:14:09,829 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 12:14:09,830 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 12:14:09,830 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 12:14:09,839 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-11-18 12:14:09,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 12:14:09,843 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:09,843 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:09,845 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:14:09,848 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:09,848 INFO L82 PathProgramCache]: Analyzing trace with hash 721519679, now seen corresponding path program 1 times [2018-11-18 12:14:09,851 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:14:09,851 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/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 [2018-11-18 12:14:09,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:14:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:09,906 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:14:09,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:14:09,919 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:14:09,928 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:14:09,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 12:14:09,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 12:14:09,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 12:14:09,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 12:14:09,940 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2018-11-18 12:14:09,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:09,957 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2018-11-18 12:14:09,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 12:14:09,958 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-11-18 12:14:09,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:09,965 INFO L225 Difference]: With dead ends: 65 [2018-11-18 12:14:09,966 INFO L226 Difference]: Without dead ends: 33 [2018-11-18 12:14:09,968 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 12:14:09,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-18 12:14:09,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-11-18 12:14:09,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-18 12:14:10,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2018-11-18 12:14:10,002 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 24 [2018-11-18 12:14:10,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:10,002 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2018-11-18 12:14:10,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 12:14:10,002 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2018-11-18 12:14:10,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 12:14:10,004 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:10,004 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:10,004 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:14:10,004 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:10,004 INFO L82 PathProgramCache]: Analyzing trace with hash -312659511, now seen corresponding path program 1 times [2018-11-18 12:14:10,005 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:14:10,005 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/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 [2018-11-18 12:14:10,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:14:10,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:10,070 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:14:10,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:14:10,095 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:14:10,107 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:14:10,107 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 12:14:10,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 12:14:10,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 12:14:10,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:14:10,109 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 4 states. [2018-11-18 12:14:10,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:10,152 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2018-11-18 12:14:10,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 12:14:10,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-11-18 12:14:10,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:10,155 INFO L225 Difference]: With dead ends: 46 [2018-11-18 12:14:10,155 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 12:14:10,155 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:14:10,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 12:14:10,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-18 12:14:10,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 12:14:10,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-18 12:14:10,162 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 25 [2018-11-18 12:14:10,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:10,162 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-18 12:14:10,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 12:14:10,163 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-18 12:14:10,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 12:14:10,163 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:10,163 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:10,163 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:14:10,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:10,163 INFO L82 PathProgramCache]: Analyzing trace with hash -265635806, now seen corresponding path program 1 times [2018-11-18 12:14:10,164 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:14:10,164 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/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 [2018-11-18 12:14:10,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:14:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:10,214 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:14:10,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:14:10,236 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:14:10,243 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:14:10,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 12:14:10,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 12:14:10,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 12:14:10,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:14:10,244 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-11-18 12:14:10,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:10,282 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-11-18 12:14:10,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 12:14:10,283 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-11-18 12:14:10,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:10,284 INFO L225 Difference]: With dead ends: 49 [2018-11-18 12:14:10,284 INFO L226 Difference]: Without dead ends: 39 [2018-11-18 12:14:10,284 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:14:10,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-18 12:14:10,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-18 12:14:10,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 12:14:10,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-18 12:14:10,290 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 26 [2018-11-18 12:14:10,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:10,290 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-18 12:14:10,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 12:14:10,290 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-18 12:14:10,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 12:14:10,291 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:10,291 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:10,291 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:14:10,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:10,291 INFO L82 PathProgramCache]: Analyzing trace with hash 18487021, now seen corresponding path program 1 times [2018-11-18 12:14:10,291 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:14:10,291 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/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 [2018-11-18 12:14:10,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:14:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:10,338 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:14:10,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:14:10,348 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:14:10,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:14:10,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 12:14:10,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 12:14:10,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 12:14:10,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:14:10,359 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-11-18 12:14:10,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:10,402 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-11-18 12:14:10,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 12:14:10,403 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-11-18 12:14:10,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:10,404 INFO L225 Difference]: With dead ends: 49 [2018-11-18 12:14:10,404 INFO L226 Difference]: Without dead ends: 39 [2018-11-18 12:14:10,404 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:14:10,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-18 12:14:10,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-18 12:14:10,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 12:14:10,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-18 12:14:10,409 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 27 [2018-11-18 12:14:10,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:10,409 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-18 12:14:10,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 12:14:10,409 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-18 12:14:10,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-18 12:14:10,410 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:10,410 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:10,410 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:14:10,411 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:10,411 INFO L82 PathProgramCache]: Analyzing trace with hash -937251962, now seen corresponding path program 1 times [2018-11-18 12:14:10,411 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:14:10,411 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/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 [2018-11-18 12:14:10,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:14:10,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:10,462 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:14:10,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:14:10,480 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:14:10,488 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:14:10,488 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 12:14:10,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 12:14:10,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 12:14:10,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:14:10,489 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-11-18 12:14:10,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:10,530 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-11-18 12:14:10,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 12:14:10,530 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-11-18 12:14:10,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:10,531 INFO L225 Difference]: With dead ends: 49 [2018-11-18 12:14:10,531 INFO L226 Difference]: Without dead ends: 39 [2018-11-18 12:14:10,532 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:14:10,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-18 12:14:10,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-18 12:14:10,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 12:14:10,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-18 12:14:10,536 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 28 [2018-11-18 12:14:10,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:10,536 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-18 12:14:10,536 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 12:14:10,536 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-18 12:14:10,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-18 12:14:10,537 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:10,537 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:10,538 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:14:10,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:10,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1230654969, now seen corresponding path program 1 times [2018-11-18 12:14:10,538 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:14:10,538 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/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 [2018-11-18 12:14:10,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:14:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:10,603 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:14:10,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:14:10,712 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:14:10,720 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:14:10,720 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-18 12:14:10,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 12:14:10,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 12:14:10,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-18 12:14:10,721 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 9 states. [2018-11-18 12:14:11,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:11,040 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2018-11-18 12:14:11,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 12:14:11,041 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-11-18 12:14:11,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:11,042 INFO L225 Difference]: With dead ends: 43 [2018-11-18 12:14:11,042 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 12:14:11,042 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-11-18 12:14:11,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 12:14:11,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2018-11-18 12:14:11,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-18 12:14:11,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2018-11-18 12:14:11,047 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 28 [2018-11-18 12:14:11,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:11,047 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2018-11-18 12:14:11,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 12:14:11,047 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2018-11-18 12:14:11,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-18 12:14:11,048 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:11,048 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:11,048 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:14:11,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:11,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1949042889, now seen corresponding path program 1 times [2018-11-18 12:14:11,049 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:14:11,049 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/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 [2018-11-18 12:14:11,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:14:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:11,135 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:14:11,160 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 12:14:11,160 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:14:11,167 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:14:11,167 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 12:14:11,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 12:14:11,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 12:14:11,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:14:11,168 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 4 states. [2018-11-18 12:14:11,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:11,181 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-11-18 12:14:11,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 12:14:11,181 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-11-18 12:14:11,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:11,182 INFO L225 Difference]: With dead ends: 46 [2018-11-18 12:14:11,182 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 12:14:11,182 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:14:11,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 12:14:11,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-18 12:14:11,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 12:14:11,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-11-18 12:14:11,187 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 33 [2018-11-18 12:14:11,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:11,187 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-11-18 12:14:11,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 12:14:11,187 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-11-18 12:14:11,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-18 12:14:11,188 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:11,188 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:11,189 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:14:11,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:11,189 INFO L82 PathProgramCache]: Analyzing trace with hash 401240846, now seen corresponding path program 1 times [2018-11-18 12:14:11,189 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:14:11,189 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/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 [2018-11-18 12:14:11,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:14:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:11,251 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:14:11,268 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 12:14:11,268 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:14:11,275 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:14:11,275 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 12:14:11,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 12:14:11,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 12:14:11,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:14:11,276 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-11-18 12:14:11,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:11,291 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2018-11-18 12:14:11,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 12:14:11,291 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-11-18 12:14:11,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:11,292 INFO L225 Difference]: With dead ends: 49 [2018-11-18 12:14:11,292 INFO L226 Difference]: Without dead ends: 39 [2018-11-18 12:14:11,292 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:14:11,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-18 12:14:11,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-18 12:14:11,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 12:14:11,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-11-18 12:14:11,297 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 34 [2018-11-18 12:14:11,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:11,297 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-11-18 12:14:11,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 12:14:11,297 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-11-18 12:14:11,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-18 12:14:11,298 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:11,298 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:11,299 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:14:11,299 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:11,299 INFO L82 PathProgramCache]: Analyzing trace with hash 2036470228, now seen corresponding path program 1 times [2018-11-18 12:14:11,299 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:14:11,299 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/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 [2018-11-18 12:14:11,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:14:11,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:11,386 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:14:11,513 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 12:14:11,513 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:14:11,520 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:14:11,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-11-18 12:14:11,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 12:14:11,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 12:14:11,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-11-18 12:14:11,521 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 10 states. [2018-11-18 12:14:11,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:11,823 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2018-11-18 12:14:11,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 12:14:11,823 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2018-11-18 12:14:11,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:11,824 INFO L225 Difference]: With dead ends: 44 [2018-11-18 12:14:11,824 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 12:14:11,824 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-11-18 12:14:11,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 12:14:11,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-18 12:14:11,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 12:14:11,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-11-18 12:14:11,828 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 35 [2018-11-18 12:14:11,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:11,828 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-11-18 12:14:11,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 12:14:11,828 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-11-18 12:14:11,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-18 12:14:11,829 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:11,829 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:11,831 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:14:11,831 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:11,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1335405650, now seen corresponding path program 1 times [2018-11-18 12:14:11,832 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:14:11,832 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/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 [2018-11-18 12:14:11,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:14:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:11,898 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:14:11,999 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 12:14:11,999 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:14:12,006 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:14:12,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 12:14:12,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 12:14:12,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 12:14:12,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 12:14:12,007 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 5 states. [2018-11-18 12:14:12,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:12,139 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2018-11-18 12:14:12,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 12:14:12,141 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-11-18 12:14:12,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:12,142 INFO L225 Difference]: With dead ends: 46 [2018-11-18 12:14:12,142 INFO L226 Difference]: Without dead ends: 33 [2018-11-18 12:14:12,142 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 12:14:12,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-18 12:14:12,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-11-18 12:14:12,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-18 12:14:12,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-11-18 12:14:12,146 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-11-18 12:14:12,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:12,146 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-18 12:14:12,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 12:14:12,146 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-11-18 12:14:12,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-18 12:14:12,146 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:12,146 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:12,147 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:14:12,147 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:12,147 INFO L82 PathProgramCache]: Analyzing trace with hash -928019429, now seen corresponding path program 1 times [2018-11-18 12:14:12,147 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:14:12,147 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/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 [2018-11-18 12:14:12,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:14:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:12,203 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:14:12,217 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 12:14:12,217 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:14:12,228 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:14:12,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 12:14:12,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 12:14:12,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 12:14:12,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:14:12,229 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-11-18 12:14:12,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:12,241 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-11-18 12:14:12,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 12:14:12,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-11-18 12:14:12,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:12,243 INFO L225 Difference]: With dead ends: 46 [2018-11-18 12:14:12,243 INFO L226 Difference]: Without dead ends: 35 [2018-11-18 12:14:12,243 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:14:12,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-18 12:14:12,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-11-18 12:14:12,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-18 12:14:12,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-11-18 12:14:12,246 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-11-18 12:14:12,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:12,247 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-18 12:14:12,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 12:14:12,247 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-11-18 12:14:12,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-18 12:14:12,247 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:12,248 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:12,248 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:14:12,248 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:12,248 INFO L82 PathProgramCache]: Analyzing trace with hash -359027022, now seen corresponding path program 1 times [2018-11-18 12:14:12,248 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:14:12,249 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/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 [2018-11-18 12:14:12,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:14:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:12,306 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:14:12,315 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 12:14:12,315 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:14:12,322 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:14:12,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 12:14:12,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 12:14:12,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 12:14:12,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:14:12,323 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-11-18 12:14:12,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:12,333 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-11-18 12:14:12,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 12:14:12,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-11-18 12:14:12,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:12,333 INFO L225 Difference]: With dead ends: 46 [2018-11-18 12:14:12,334 INFO L226 Difference]: Without dead ends: 35 [2018-11-18 12:14:12,334 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:14:12,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-18 12:14:12,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-11-18 12:14:12,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-18 12:14:12,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-11-18 12:14:12,337 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 36 [2018-11-18 12:14:12,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:12,337 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-18 12:14:12,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 12:14:12,337 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-11-18 12:14:12,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-18 12:14:12,338 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:12,338 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:12,338 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:14:12,338 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:12,339 INFO L82 PathProgramCache]: Analyzing trace with hash -652430029, now seen corresponding path program 1 times [2018-11-18 12:14:12,339 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:14:12,339 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/bin-2019/utaipan/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2018-11-18 12:14:12,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:14:12,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:12,418 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:14:12,526 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 12:14:12,526 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:14:12,538 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:14:12,538 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-18 12:14:12,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 12:14:12,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 12:14:12,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-18 12:14:12,539 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 9 states. [2018-11-18 12:14:12,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:12,886 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-11-18 12:14:12,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 12:14:12,886 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2018-11-18 12:14:12,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:12,886 INFO L225 Difference]: With dead ends: 33 [2018-11-18 12:14:12,886 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 12:14:12,887 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-11-18 12:14:12,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 12:14:12,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 12:14:12,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 12:14:12,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 12:14:12,888 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2018-11-18 12:14:12,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:12,888 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 12:14:12,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 12:14:12,888 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 12:14:12,888 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 12:14:12,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 12:14:13,007 INFO L428 ceAbstractionStarter]: At program point isnan_doubleENTRY(line 16) the Hoare annotation is: true [2018-11-18 12:14:13,007 INFO L425 ceAbstractionStarter]: For program point isnan_doubleEXIT(line 16) no Hoare annotation was computed. [2018-11-18 12:14:13,007 INFO L425 ceAbstractionStarter]: For program point isnan_doubleFINAL(line 16) no Hoare annotation was computed. [2018-11-18 12:14:13,007 INFO L425 ceAbstractionStarter]: For program point L33(lines 33 41) no Hoare annotation was computed. [2018-11-18 12:14:13,007 INFO L425 ceAbstractionStarter]: For program point __fpclassify_doubleFINAL(lines 17 42) no Hoare annotation was computed. [2018-11-18 12:14:13,007 INFO L428 ceAbstractionStarter]: At program point __fpclassify_doubleENTRY(lines 17 42) the Hoare annotation is: true [2018-11-18 12:14:13,007 INFO L425 ceAbstractionStarter]: For program point L30(lines 30 41) no Hoare annotation was computed. [2018-11-18 12:14:13,007 INFO L425 ceAbstractionStarter]: For program point __fpclassify_doubleEXIT(lines 17 42) no Hoare annotation was computed. [2018-11-18 12:14:13,007 INFO L425 ceAbstractionStarter]: For program point L20-1(lines 20 25) no Hoare annotation was computed. [2018-11-18 12:14:13,007 INFO L428 ceAbstractionStarter]: At program point L20-3(lines 20 25) the Hoare annotation is: true [2018-11-18 12:14:13,007 INFO L425 ceAbstractionStarter]: For program point L20-4(lines 17 42) no Hoare annotation was computed. [2018-11-18 12:14:13,007 INFO L425 ceAbstractionStarter]: For program point L37(lines 37 41) no Hoare annotation was computed. [2018-11-18 12:14:13,007 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 12:14:13,008 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 12:14:13,008 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 12:14:13,008 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 12:14:13,008 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 12:14:13,008 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 12:14:13,008 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 12:14:13,008 INFO L421 ceAbstractionStarter]: At program point L65(line 65) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53)))) (and (= main_~y~0 .cse0) (= main_~res~0 .cse0))) [2018-11-18 12:14:13,008 INFO L425 ceAbstractionStarter]: For program point L65-1(lines 65 68) no Hoare annotation was computed. [2018-11-18 12:14:13,008 INFO L421 ceAbstractionStarter]: At program point L63(line 63) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53)))) (and (= main_~x~0 .cse0) (= main_~y~0 .cse0))) [2018-11-18 12:14:13,008 INFO L425 ceAbstractionStarter]: For program point L63-1(line 63) no Hoare annotation was computed. [2018-11-18 12:14:13,009 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 66) no Hoare annotation was computed. [2018-11-18 12:14:13,009 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 53 71) the Hoare annotation is: true [2018-11-18 12:14:13,009 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 53 71) no Hoare annotation was computed. [2018-11-18 12:14:13,009 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 53 71) no Hoare annotation was computed. [2018-11-18 12:14:13,009 INFO L425 ceAbstractionStarter]: For program point L66(line 66) no Hoare annotation was computed. [2018-11-18 12:14:13,009 INFO L425 ceAbstractionStarter]: For program point fmin_doubleFINAL(lines 44 51) no Hoare annotation was computed. [2018-11-18 12:14:13,009 INFO L428 ceAbstractionStarter]: At program point fmin_doubleENTRY(lines 44 51) the Hoare annotation is: true [2018-11-18 12:14:13,009 INFO L425 ceAbstractionStarter]: For program point fmin_doubleEXIT(lines 44 51) no Hoare annotation was computed. [2018-11-18 12:14:13,009 INFO L425 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2018-11-18 12:14:13,009 INFO L425 ceAbstractionStarter]: For program point L50-2(line 50) no Hoare annotation was computed. [2018-11-18 12:14:13,009 INFO L421 ceAbstractionStarter]: At program point L47(line 47) the Hoare annotation is: (and (= fmin_double_~y |fmin_double_#in~y|) (= fmin_double_~x |fmin_double_#in~x|)) [2018-11-18 12:14:13,009 INFO L425 ceAbstractionStarter]: For program point L47-1(lines 47 48) no Hoare annotation was computed. [2018-11-18 12:14:13,010 INFO L421 ceAbstractionStarter]: At program point L45(line 45) the Hoare annotation is: (and (= fmin_double_~y |fmin_double_#in~y|) (= fmin_double_~x |fmin_double_#in~x|)) [2018-11-18 12:14:13,010 INFO L425 ceAbstractionStarter]: For program point L45-1(lines 45 46) no Hoare annotation was computed. [2018-11-18 12:14:13,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 12:14:13 BoogieIcfgContainer [2018-11-18 12:14:13,014 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 12:14:13,014 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 12:14:13,015 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 12:14:13,015 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 12:14:13,015 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:14:09" (3/4) ... [2018-11-18 12:14:13,017 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 12:14:13,021 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_double [2018-11-18 12:14:13,021 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2018-11-18 12:14:13,022 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 12:14:13,022 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 12:14:13,022 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure fmin_double [2018-11-18 12:14:13,025 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2018-11-18 12:14:13,025 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-18 12:14:13,026 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 12:14:13,055 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_47c4a420-f86d-428c-894a-6d2a7c4c1769/bin-2019/utaipan/witness.graphml [2018-11-18 12:14:13,055 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 12:14:13,055 INFO L168 Benchmark]: Toolchain (without parser) took 3767.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 206.6 MB). Free memory was 950.8 MB in the beginning and 1.2 GB in the end (delta: -243.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:14:13,057 INFO L168 Benchmark]: CDTParser took 0.12 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. [2018-11-18 12:14:13,057 INFO L168 Benchmark]: CACSL2BoogieTranslator took 185.98 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 933.6 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. [2018-11-18 12:14:13,057 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.77 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:14:13,057 INFO L168 Benchmark]: Boogie Preprocessor took 25.59 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:14:13,058 INFO L168 Benchmark]: RCFGBuilder took 261.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -168.1 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. [2018-11-18 12:14:13,058 INFO L168 Benchmark]: TraceAbstraction took 3232.08 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 73.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -96.4 MB). Peak memory consumption was 315.5 MB. Max. memory is 11.5 GB. [2018-11-18 12:14:13,058 INFO L168 Benchmark]: Witness Printer took 40.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:14:13,060 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 185.98 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 933.6 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.77 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.59 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 261.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -168.1 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3232.08 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 73.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -96.4 MB). Peak memory consumption was 315.5 MB. Max. memory is 11.5 GB. * Witness Printer took 40.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 66]: 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: 20]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 37 locations, 1 error locations. SAFE Result, 3.1s OverallTime, 13 OverallIterations, 2 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 498 SDtfs, 31 SDslu, 1315 SDs, 0 SdLazy, 221 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 403 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 19 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 28 PreInvPairs, 33 NumberOfFragments, 48 HoareAnnotationTreeSize, 28 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 402 NumberOfCodeBlocks, 402 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 389 ConstructedInterpolants, 3 QuantifiedInterpolants, 21339 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1167 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 42/42 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...