./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-benchs/filter1_true-unreach-call.c.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/filter1_true-unreach-call.c.p+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/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 6710c77e3bf5a7bf39c573c94c62b098a988af37 ................................................................................................................................................................................................................................................................................................................................................................ 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_9f54b566-ad67-4c01-9c21-6a4165719fb8/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/filter1_true-unreach-call.c.p+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/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 6710c77e3bf5a7bf39c573c94c62b098a988af37 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 04:02:00,830 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 04:02:00,831 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 04:02:00,840 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 04:02:00,840 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 04:02:00,841 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 04:02:00,842 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 04:02:00,843 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 04:02:00,844 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 04:02:00,845 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 04:02:00,846 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 04:02:00,846 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 04:02:00,847 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 04:02:00,847 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 04:02:00,848 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 04:02:00,849 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 04:02:00,849 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 04:02:00,851 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 04:02:00,852 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 04:02:00,854 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 04:02:00,854 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 04:02:00,855 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 04:02:00,857 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 04:02:00,857 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 04:02:00,857 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 04:02:00,858 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 04:02:00,859 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 04:02:00,859 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 04:02:00,860 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 04:02:00,861 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 04:02:00,861 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 04:02:00,862 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 04:02:00,862 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 04:02:00,862 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 04:02:00,863 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 04:02:00,863 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 04:02:00,863 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-10 04:02:00,874 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 04:02:00,874 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 04:02:00,875 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 04:02:00,875 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 04:02:00,875 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 04:02:00,876 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 04:02:00,876 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 04:02:00,876 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 04:02:00,876 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 04:02:00,876 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 04:02:00,876 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 04:02:00,877 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 04:02:00,877 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 04:02:00,877 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 04:02:00,877 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 04:02:00,877 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 04:02:00,878 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 04:02:00,878 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 04:02:00,878 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 04:02:00,878 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 04:02:00,878 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 04:02:00,878 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 04:02:00,878 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 04:02:00,878 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 04:02:00,879 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 04:02:00,879 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 04:02:00,879 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 04:02:00,879 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 04:02:00,879 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 04:02:00,879 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 04:02:00,880 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 04:02:00,880 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 04:02:00,880 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 04:02:00,880 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 04:02:00,880 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_9f54b566-ad67-4c01-9c21-6a4165719fb8/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 -> 6710c77e3bf5a7bf39c573c94c62b098a988af37 [2018-11-10 04:02:00,903 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 04:02:00,912 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 04:02:00,914 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 04:02:00,914 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 04:02:00,915 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 04:02:00,915 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/filter1_true-unreach-call.c.p+cfa-reducer.c [2018-11-10 04:02:00,952 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/bin-2019/utaipan/data/dde7b5b5c/d5541ff8b4e642c59eb66c42c730e5d4/FLAG235b3a4f3 [2018-11-10 04:02:01,348 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 04:02:01,349 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/sv-benchmarks/c/float-benchs/filter1_true-unreach-call.c.p+cfa-reducer.c [2018-11-10 04:02:01,352 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/bin-2019/utaipan/data/dde7b5b5c/d5541ff8b4e642c59eb66c42c730e5d4/FLAG235b3a4f3 [2018-11-10 04:02:01,360 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/bin-2019/utaipan/data/dde7b5b5c/d5541ff8b4e642c59eb66c42c730e5d4 [2018-11-10 04:02:01,362 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 04:02:01,363 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 04:02:01,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 04:02:01,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 04:02:01,366 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 04:02:01,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:02:01" (1/1) ... [2018-11-10 04:02:01,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4897ecb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:02:01, skipping insertion in model container [2018-11-10 04:02:01,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:02:01" (1/1) ... [2018-11-10 04:02:01,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 04:02:01,388 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 04:02:01,490 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:02:01,492 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 04:02:01,503 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:02:01,511 INFO L193 MainTranslator]: Completed translation [2018-11-10 04:02:01,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:02:01 WrapperNode [2018-11-10 04:02:01,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 04:02:01,512 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 04:02:01,512 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 04:02:01,512 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 04:02:01,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:02:01" (1/1) ... [2018-11-10 04:02:01,523 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:02:01" (1/1) ... [2018-11-10 04:02:01,528 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 04:02:01,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 04:02:01,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 04:02:01,529 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 04:02:01,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:02:01" (1/1) ... [2018-11-10 04:02:01,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:02:01" (1/1) ... [2018-11-10 04:02:01,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:02:01" (1/1) ... [2018-11-10 04:02:01,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:02:01" (1/1) ... [2018-11-10 04:02:01,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:02:01" (1/1) ... [2018-11-10 04:02:01,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:02:01" (1/1) ... [2018-11-10 04:02:01,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:02:01" (1/1) ... [2018-11-10 04:02:01,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 04:02:01,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 04:02:01,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 04:02:01,544 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 04:02:01,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:02:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/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 [2018-11-10 04:02:01,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 04:02:01,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 04:02:01,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 04:02:01,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 04:02:01,622 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 04:02:01,622 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 04:02:01,751 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 04:02:01,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:02:01 BoogieIcfgContainer [2018-11-10 04:02:01,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 04:02:01,752 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 04:02:01,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 04:02:01,755 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 04:02:01,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 04:02:01" (1/3) ... [2018-11-10 04:02:01,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b3de09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 04:02:01, skipping insertion in model container [2018-11-10 04:02:01,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:02:01" (2/3) ... [2018-11-10 04:02:01,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b3de09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 04:02:01, skipping insertion in model container [2018-11-10 04:02:01,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:02:01" (3/3) ... [2018-11-10 04:02:01,758 INFO L112 eAbstractionObserver]: Analyzing ICFG filter1_true-unreach-call.c.p+cfa-reducer.c [2018-11-10 04:02:01,766 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 04:02:01,772 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 04:02:01,785 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 04:02:01,812 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 04:02:01,812 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 04:02:01,812 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 04:02:01,813 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 04:02:01,813 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 04:02:01,813 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 04:02:01,813 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 04:02:01,813 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 04:02:01,826 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-11-10 04:02:01,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-10 04:02:01,831 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:02:01,832 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:02:01,833 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:02:01,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:02:01,838 INFO L82 PathProgramCache]: Analyzing trace with hash 604588517, now seen corresponding path program 1 times [2018-11-10 04:02:01,840 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 04:02:01,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:02:01,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:02:01,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:02:01,880 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 04:02:01,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:02:01,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:02:01,938 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:02:01,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 04:02:01,938 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 04:02:01,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 04:02:01,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 04:02:01,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 04:02:01,956 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2018-11-10 04:02:01,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:02:01,983 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2018-11-10 04:02:01,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 04:02:01,984 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-11-10 04:02:01,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:02:01,990 INFO L225 Difference]: With dead ends: 45 [2018-11-10 04:02:01,990 INFO L226 Difference]: Without dead ends: 19 [2018-11-10 04:02:01,992 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 04:02:02,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-10 04:02:02,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-10 04:02:02,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-10 04:02:02,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2018-11-10 04:02:02,013 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 17 [2018-11-10 04:02:02,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:02:02,014 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2018-11-10 04:02:02,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 04:02:02,014 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2018-11-10 04:02:02,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-10 04:02:02,014 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:02:02,015 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:02:02,015 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:02:02,015 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:02:02,015 INFO L82 PathProgramCache]: Analyzing trace with hash 715558858, now seen corresponding path program 1 times [2018-11-10 04:02:02,015 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 04:02:02,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:02:02,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:02:02,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:02:02,016 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 04:02:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:02:02,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:02:02,052 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:02:02,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 04:02:02,052 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 04:02:02,053 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 04:02:02,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 04:02:02,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 04:02:02,054 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 4 states. [2018-11-10 04:02:02,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:02:02,107 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2018-11-10 04:02:02,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 04:02:02,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-11-10 04:02:02,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:02:02,108 INFO L225 Difference]: With dead ends: 34 [2018-11-10 04:02:02,108 INFO L226 Difference]: Without dead ends: 32 [2018-11-10 04:02:02,109 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-10 04:02:02,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-10 04:02:02,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 21. [2018-11-10 04:02:02,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-10 04:02:02,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2018-11-10 04:02:02,112 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 17 [2018-11-10 04:02:02,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:02:02,112 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2018-11-10 04:02:02,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 04:02:02,112 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2018-11-10 04:02:02,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-10 04:02:02,113 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:02:02,113 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:02:02,113 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:02:02,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:02:02,113 INFO L82 PathProgramCache]: Analyzing trace with hash 731616207, now seen corresponding path program 1 times [2018-11-10 04:02:02,113 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 04:02:02,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:02:02,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:02:02,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:02:02,114 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 04:02:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:02:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:02:02,135 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 04:02:02,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 04:02:02 BoogieIcfgContainer [2018-11-10 04:02:02,151 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 04:02:02,151 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 04:02:02,151 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 04:02:02,151 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 04:02:02,152 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:02:01" (3/4) ... [2018-11-10 04:02:02,154 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 04:02:02,154 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 04:02:02,155 INFO L168 Benchmark]: Toolchain (without parser) took 792.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -147.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 11.5 GB. [2018-11-10 04:02:02,156 INFO L168 Benchmark]: CDTParser took 0.18 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. [2018-11-10 04:02:02,157 INFO L168 Benchmark]: CACSL2BoogieTranslator took 147.99 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 948.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-11-10 04:02:02,157 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.62 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 04:02:02,157 INFO L168 Benchmark]: Boogie Preprocessor took 15.29 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 04:02:02,158 INFO L168 Benchmark]: RCFGBuilder took 207.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -196.6 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2018-11-10 04:02:02,158 INFO L168 Benchmark]: TraceAbstraction took 398.77 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: 34.3 MB). Peak memory consumption was 34.3 MB. Max. memory is 11.5 GB. [2018-11-10 04:02:02,158 INFO L168 Benchmark]: Witness Printer took 3.03 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. [2018-11-10 04:02:02,160 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 147.99 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 948.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.62 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.29 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 207.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -196.6 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 398.77 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: 34.3 MB). Peak memory consumption was 34.3 MB. Max. memory is 11.5 GB. * Witness Printer took 3.03 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: 51]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 38, overapproximation of to_real at line 34. Possible FailurePath: [L1] int __return_main; VAL [\old(__return_main)=2, __return_main=0] [L10] double main__E0; [L11] double main__E1; [L12] double main__S; [L13] int main__i; [L14] main__E1 = 0 [L15] main__S = 0 [L16] main__i = 0 VAL [__return_main=0, main__i=0] [L18] COND TRUE main__i <= 1000000 [L20] main__E0 = __VERIFIER_nondet_double() [L21] int main____CPAchecker_TMP_0; VAL [__return_main=0, main__E0=3, main__i=0] [L22] COND TRUE main__E0 >= -1.0 VAL [__return_main=0, main__E0=3, main__i=0] [L24] COND TRUE main__E0 <= 1.0 [L26] main____CPAchecker_TMP_0 = 1 VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__E0=3, main__i=0] [L28] COND TRUE main____CPAchecker_TMP_0 != 0 [L30] int main____CPAchecker_TMP_1; [L31] main____CPAchecker_TMP_1 = __VERIFIER_nondet_int() [L32] COND TRUE !(main____CPAchecker_TMP_1 == 0) [L34] main__S = 0 VAL [__return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__E0=3, main__i=0] [L36] main__E1 = main__E0 [L37] int main____CPAchecker_TMP_2; VAL [__return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__E0=3, main__E1=3, main__i=0] [L38] COND FALSE !(main__S >= -10000.0) VAL [__return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__E0=3, main__E1=3, main__i=0] [L64] main____CPAchecker_TMP_2 = 0 VAL [__return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__E0=3, main__E1=3, main__i=0] [L45] int __tmp_1; [L46] __tmp_1 = main____CPAchecker_TMP_2 [L47] int __VERIFIER_assert__cond; [L48] __VERIFIER_assert__cond = __tmp_1 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__E0=3, main__E1=3, main__i=0] [L49] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__E0=3, main__E1=3, main__i=0] [L51] __VERIFIER_error() VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__E0=3, main__E1=3, main__i=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 63 SDtfs, 23 SDslu, 66 SDs, 0 SdLazy, 17 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 2 MinimizatonAttempts, 11 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 608 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 0.1.23-1dbac8b [2018-11-10 04:02:03,576 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 04:02:03,577 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 04:02:03,586 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 04:02:03,586 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 04:02:03,587 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 04:02:03,587 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 04:02:03,588 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 04:02:03,589 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 04:02:03,590 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 04:02:03,591 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 04:02:03,591 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 04:02:03,591 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 04:02:03,592 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 04:02:03,593 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 04:02:03,593 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 04:02:03,594 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 04:02:03,595 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 04:02:03,596 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 04:02:03,597 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 04:02:03,598 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 04:02:03,598 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 04:02:03,600 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 04:02:03,600 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 04:02:03,600 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 04:02:03,601 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 04:02:03,602 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 04:02:03,602 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 04:02:03,603 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 04:02:03,603 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 04:02:03,603 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 04:02:03,604 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 04:02:03,604 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 04:02:03,604 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 04:02:03,605 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 04:02:03,605 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 04:02:03,605 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-10 04:02:03,615 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 04:02:03,615 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 04:02:03,616 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 04:02:03,616 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 04:02:03,616 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 04:02:03,616 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 04:02:03,617 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 04:02:03,617 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 04:02:03,617 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 04:02:03,617 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 04:02:03,618 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 04:02:03,618 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 04:02:03,618 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 04:02:03,618 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 04:02:03,618 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 04:02:03,618 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-10 04:02:03,618 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-10 04:02:03,618 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 04:02:03,619 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 04:02:03,619 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 04:02:03,619 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 04:02:03,619 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 04:02:03,619 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 04:02:03,619 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 04:02:03,619 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 04:02:03,620 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 04:02:03,620 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 04:02:03,620 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 04:02:03,620 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-10 04:02:03,620 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 04:02:03,620 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-10 04:02:03,620 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-10 04:02:03,620 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_9f54b566-ad67-4c01-9c21-6a4165719fb8/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 -> 6710c77e3bf5a7bf39c573c94c62b098a988af37 [2018-11-10 04:02:03,649 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 04:02:03,657 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 04:02:03,660 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 04:02:03,661 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 04:02:03,662 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 04:02:03,662 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/filter1_true-unreach-call.c.p+cfa-reducer.c [2018-11-10 04:02:03,698 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/bin-2019/utaipan/data/fcf4f0b10/3158b036f309466991c61f9736646bfa/FLAGac666796f [2018-11-10 04:02:03,988 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 04:02:03,988 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/sv-benchmarks/c/float-benchs/filter1_true-unreach-call.c.p+cfa-reducer.c [2018-11-10 04:02:03,993 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/bin-2019/utaipan/data/fcf4f0b10/3158b036f309466991c61f9736646bfa/FLAGac666796f [2018-11-10 04:02:04,002 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/bin-2019/utaipan/data/fcf4f0b10/3158b036f309466991c61f9736646bfa [2018-11-10 04:02:04,005 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 04:02:04,006 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 04:02:04,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 04:02:04,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 04:02:04,010 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 04:02:04,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:02:04" (1/1) ... [2018-11-10 04:02:04,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26052e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:02:04, skipping insertion in model container [2018-11-10 04:02:04,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:02:04" (1/1) ... [2018-11-10 04:02:04,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 04:02:04,036 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 04:02:04,147 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:02:04,152 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 04:02:04,167 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:02:04,176 INFO L193 MainTranslator]: Completed translation [2018-11-10 04:02:04,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:02:04 WrapperNode [2018-11-10 04:02:04,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 04:02:04,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 04:02:04,178 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 04:02:04,178 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 04:02:04,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:02:04" (1/1) ... [2018-11-10 04:02:04,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:02:04" (1/1) ... [2018-11-10 04:02:04,192 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 04:02:04,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 04:02:04,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 04:02:04,192 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 04:02:04,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:02:04" (1/1) ... [2018-11-10 04:02:04,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:02:04" (1/1) ... [2018-11-10 04:02:04,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:02:04" (1/1) ... [2018-11-10 04:02:04,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:02:04" (1/1) ... [2018-11-10 04:02:04,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:02:04" (1/1) ... [2018-11-10 04:02:04,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:02:04" (1/1) ... [2018-11-10 04:02:04,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:02:04" (1/1) ... [2018-11-10 04:02:04,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 04:02:04,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 04:02:04,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 04:02:04,208 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 04:02:04,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:02:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/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 [2018-11-10 04:02:04,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 04:02:04,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 04:02:04,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 04:02:04,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 04:02:04,292 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 04:02:04,292 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 04:02:06,437 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 04:02:06,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:02:06 BoogieIcfgContainer [2018-11-10 04:02:06,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 04:02:06,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 04:02:06,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 04:02:06,441 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 04:02:06,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 04:02:04" (1/3) ... [2018-11-10 04:02:06,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13fc7c0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 04:02:06, skipping insertion in model container [2018-11-10 04:02:06,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:02:04" (2/3) ... [2018-11-10 04:02:06,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13fc7c0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 04:02:06, skipping insertion in model container [2018-11-10 04:02:06,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:02:06" (3/3) ... [2018-11-10 04:02:06,443 INFO L112 eAbstractionObserver]: Analyzing ICFG filter1_true-unreach-call.c.p+cfa-reducer.c [2018-11-10 04:02:06,449 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 04:02:06,454 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 04:02:06,463 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 04:02:06,481 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 04:02:06,481 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 04:02:06,482 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 04:02:06,482 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 04:02:06,482 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 04:02:06,482 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 04:02:06,482 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 04:02:06,482 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 04:02:06,482 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 04:02:06,495 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-11-10 04:02:06,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-10 04:02:06,499 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:02:06,500 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:02:06,501 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:02:06,505 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:02:06,505 INFO L82 PathProgramCache]: Analyzing trace with hash 604588517, now seen corresponding path program 1 times [2018-11-10 04:02:06,507 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 04:02:06,508 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/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 [2018-11-10 04:02:06,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:02:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:02:06,543 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:02:06,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:02:06,562 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 04:02:06,570 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:02:06,571 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 04:02:06,573 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 04:02:06,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 04:02:06,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 04:02:06,586 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2018-11-10 04:02:06,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:02:06,614 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2018-11-10 04:02:06,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 04:02:06,615 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-11-10 04:02:06,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:02:06,622 INFO L225 Difference]: With dead ends: 45 [2018-11-10 04:02:06,623 INFO L226 Difference]: Without dead ends: 19 [2018-11-10 04:02:06,625 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 04:02:06,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-10 04:02:06,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-10 04:02:06,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-10 04:02:06,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2018-11-10 04:02:06,650 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 17 [2018-11-10 04:02:06,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:02:06,651 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2018-11-10 04:02:06,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 04:02:06,651 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2018-11-10 04:02:06,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-10 04:02:06,651 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:02:06,652 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:02:06,652 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:02:06,652 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:02:06,652 INFO L82 PathProgramCache]: Analyzing trace with hash 715558858, now seen corresponding path program 1 times [2018-11-10 04:02:06,653 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 04:02:06,653 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/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 [2018-11-10 04:02:06,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:02:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:02:06,685 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:02:06,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:02:06,697 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 04:02:06,704 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:02:06,704 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 04:02:06,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 04:02:06,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 04:02:06,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 04:02:06,705 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 4 states. [2018-11-10 04:02:06,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:02:06,757 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2018-11-10 04:02:06,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 04:02:06,757 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-11-10 04:02:06,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:02:06,758 INFO L225 Difference]: With dead ends: 34 [2018-11-10 04:02:06,758 INFO L226 Difference]: Without dead ends: 32 [2018-11-10 04:02:06,758 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-10 04:02:06,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-10 04:02:06,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 21. [2018-11-10 04:02:06,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-10 04:02:06,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2018-11-10 04:02:06,763 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 17 [2018-11-10 04:02:06,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:02:06,763 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2018-11-10 04:02:06,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 04:02:06,764 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2018-11-10 04:02:06,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-10 04:02:06,764 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:02:06,764 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:02:06,764 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:02:06,764 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:02:06,765 INFO L82 PathProgramCache]: Analyzing trace with hash 731616207, now seen corresponding path program 1 times [2018-11-10 04:02:06,765 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 04:02:06,765 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/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 [2018-11-10 04:02:06,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:02:06,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:02:06,786 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:02:06,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:02:06,796 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 04:02:06,808 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:02:06,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 04:02:06,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 04:02:06,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 04:02:06,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 04:02:06,809 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 3 states. [2018-11-10 04:02:07,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:02:07,277 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2018-11-10 04:02:07,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 04:02:07,277 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-11-10 04:02:07,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:02:07,278 INFO L225 Difference]: With dead ends: 46 [2018-11-10 04:02:07,278 INFO L226 Difference]: Without dead ends: 31 [2018-11-10 04:02:07,278 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 04:02:07,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-10 04:02:07,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 24. [2018-11-10 04:02:07,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-10 04:02:07,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2018-11-10 04:02:07,282 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 17 [2018-11-10 04:02:07,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:02:07,282 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2018-11-10 04:02:07,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 04:02:07,283 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2018-11-10 04:02:07,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-10 04:02:07,283 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:02:07,283 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:02:07,283 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:02:07,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:02:07,284 INFO L82 PathProgramCache]: Analyzing trace with hash 556868071, now seen corresponding path program 1 times [2018-11-10 04:02:07,284 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 04:02:07,284 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/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 [2018-11-10 04:02:07,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:02:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:02:07,605 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:02:07,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:02:07,733 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 04:02:07,747 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:02:07,747 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-10 04:02:07,747 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 04:02:07,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 04:02:07,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-10 04:02:07,748 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 6 states. [2018-11-10 04:02:10,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:02:10,460 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2018-11-10 04:02:10,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 04:02:10,461 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-11-10 04:02:10,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:02:10,462 INFO L225 Difference]: With dead ends: 58 [2018-11-10 04:02:10,462 INFO L226 Difference]: Without dead ends: 40 [2018-11-10 04:02:10,462 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-10 04:02:10,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-10 04:02:10,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 29. [2018-11-10 04:02:10,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-10 04:02:10,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2018-11-10 04:02:10,468 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 17 [2018-11-10 04:02:10,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:02:10,468 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2018-11-10 04:02:10,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 04:02:10,468 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2018-11-10 04:02:10,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-10 04:02:10,469 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:02:10,469 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:02:10,469 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:02:10,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:02:10,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1201166603, now seen corresponding path program 1 times [2018-11-10 04:02:10,470 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 04:02:10,470 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/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 [2018-11-10 04:02:10,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:02:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:02:10,788 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:02:13,033 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~main__E0~0 (_ FloatingPoint 11 53)) (main_~main__E1~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse0 (fp.neg .cse1))) (and (= c_main_~main__S~0 (fp.sub RNE (fp.add RNE (fp.mul RNE ((_ to_fp 11 53) RNE (/ 999.0 1000.0)) ((_ to_fp 11 53) RNE (_ bv0 32))) main_~main__E0~0) main_~main__E1~0)) (fp.geq main_~main__E0~0 .cse0) (fp.leq main_~main__E0~0 .cse1) (fp.geq main_~main__E1~0 .cse0) (fp.leq main_~main__E1~0 .cse1))))) is different from true [2018-11-10 04:02:14,655 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2018-11-10 04:02:14,655 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 04:02:16,699 WARN L832 $PredicateComparison]: unable to prove that (fp.geq (fp.sub RNE (fp.add RNE (fp.mul RNE ((_ to_fp 11 53) RNE (/ 999.0 1000.0)) c_main_~main__S~0) c_main_~main__E0~0) c_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) RNE 10000.0))) is different from false [2018-11-10 04:02:40,746 WARN L179 SmtUtils]: Spent 9.05 s on a formula simplification that was a NOOP. DAG size: 18 [2018-11-10 04:03:01,704 WARN L179 SmtUtils]: Spent 1.79 s on a formula simplification that was a NOOP. DAG size: 22 [2018-11-10 04:03:23,418 WARN L179 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 22 [2018-11-10 04:03:40,159 WARN L179 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-10 04:03:42,173 WARN L854 $PredicateComparison]: unable to prove that (or (forall ((v_subst_1 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (or (not (fp.leq v_subst_1 .cse0)) (fp.geq (fp.sub RNE (fp.add RNE (fp.mul RNE ((_ to_fp 11 53) RNE (/ 999.0 1000.0)) ((_ to_fp 11 53) RNE (_ bv0 32))) v_subst_1) c_main_~main__E0~0) (fp.neg ((_ to_fp 11 53) RNE 10000.0))) (not (fp.geq v_subst_1 (fp.neg .cse0)))))) (not (fp.leq c_main_~main__E0~0 ((_ to_fp 11 53) RNE 1.0)))) is different from true [2018-11-10 04:03:48,211 WARN L832 $PredicateComparison]: unable to prove that (forall ((main_~main__E0~0 (_ FloatingPoint 11 53)) (v_subst_1 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse1 (fp.neg .cse0))) (or (not (fp.leq v_subst_1 .cse0)) (not (fp.geq main_~main__E0~0 .cse1)) (fp.geq (fp.sub RNE (fp.add RNE (fp.mul RNE ((_ to_fp 11 53) RNE (/ 999.0 1000.0)) ((_ to_fp 11 53) RNE (_ bv0 32))) v_subst_1) main_~main__E0~0) (fp.neg ((_ to_fp 11 53) RNE 10000.0))) (not (fp.geq v_subst_1 .cse1)) (not (fp.leq main_~main__E0~0 .cse0)))))) is different from false [2018-11-10 04:03:50,220 WARN L854 $PredicateComparison]: unable to prove that (forall ((main_~main__E0~0 (_ FloatingPoint 11 53)) (v_subst_1 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse1 (fp.neg .cse0))) (or (not (fp.leq v_subst_1 .cse0)) (not (fp.geq main_~main__E0~0 .cse1)) (fp.geq (fp.sub RNE (fp.add RNE (fp.mul RNE ((_ to_fp 11 53) RNE (/ 999.0 1000.0)) ((_ to_fp 11 53) RNE (_ bv0 32))) v_subst_1) main_~main__E0~0) (fp.neg ((_ to_fp 11 53) RNE 10000.0))) (not (fp.geq v_subst_1 .cse1)) (not (fp.leq main_~main__E0~0 .cse0)))))) is different from true [2018-11-10 04:04:06,312 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:04:06,313 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 04:04:06,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:04:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:04:10,976 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:04:17,014 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~main__E0~0 (_ FloatingPoint 11 53)) (main_~main__E1~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse0 (fp.neg .cse1))) (and (fp.geq main_~main__E0~0 .cse0) (fp.leq main_~main__E0~0 .cse1) (not (fp.geq (fp.sub RNE (fp.add RNE (fp.mul RNE ((_ to_fp 11 53) RNE (/ 999.0 1000.0)) ((_ to_fp 11 53) RNE (_ bv0 32))) main_~main__E0~0) main_~main__E1~0) (fp.neg ((_ to_fp 11 53) RNE 10000.0)))) (fp.geq main_~main__E1~0 .cse0) (fp.leq main_~main__E1~0 .cse1))))) is different from false [2018-11-10 04:04:19,024 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~main__E0~0 (_ FloatingPoint 11 53)) (main_~main__E1~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse0 (fp.neg .cse1))) (and (fp.geq main_~main__E0~0 .cse0) (fp.leq main_~main__E0~0 .cse1) (not (fp.geq (fp.sub RNE (fp.add RNE (fp.mul RNE ((_ to_fp 11 53) RNE (/ 999.0 1000.0)) ((_ to_fp 11 53) RNE (_ bv0 32))) main_~main__E0~0) main_~main__E1~0) (fp.neg ((_ to_fp 11 53) RNE 10000.0)))) (fp.geq main_~main__E1~0 .cse0) (fp.leq main_~main__E1~0 .cse1))))) is different from true [2018-11-10 04:04:31,085 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2018-11-10 04:04:31,085 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 04:04:33,121 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (or (not (fp.geq c_main_~main__E0~0 (fp.neg .cse0))) (fp.geq (fp.sub RNE (fp.add RNE (fp.mul RNE ((_ to_fp 11 53) RNE (/ 999.0 1000.0)) c_main_~main__S~0) c_main_~main__E0~0) c_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) RNE 10000.0))) (not (fp.leq c_main_~main__E0~0 .cse0)))) is different from false [2018-11-10 04:05:18,198 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (or (not (fp.geq c_main_~main__E0~0 (fp.neg .cse0))) (forall ((v_subst_1 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) RNE 1.0))) (or (not (fp.leq v_subst_1 .cse1)) (fp.geq (fp.sub RNE (fp.add RNE (fp.mul RNE ((_ to_fp 11 53) RNE (/ 999.0 1000.0)) ((_ to_fp 11 53) RNE (_ bv0 32))) v_subst_1) c_main_~main__E0~0) (fp.neg ((_ to_fp 11 53) RNE 10000.0))) (not (fp.geq v_subst_1 (fp.neg .cse1)))))) (not (fp.leq c_main_~main__E0~0 .cse0)))) is different from true [2018-11-10 04:05:24,228 WARN L832 $PredicateComparison]: unable to prove that (forall ((|main_#t~nondet0| (_ FloatingPoint 11 53)) (v_subst_1 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse1 (fp.neg .cse0))) (or (fp.geq (fp.sub RNE (fp.add RNE (fp.mul RNE ((_ to_fp 11 53) RNE (/ 999.0 1000.0)) ((_ to_fp 11 53) RNE (_ bv0 32))) v_subst_1) |main_#t~nondet0|) (fp.neg ((_ to_fp 11 53) RNE 10000.0))) (not (fp.leq v_subst_1 .cse0)) (not (fp.leq |main_#t~nondet0| .cse0)) (not (fp.geq |main_#t~nondet0| .cse1)) (not (fp.geq v_subst_1 .cse1)))))) is different from false [2018-11-10 04:05:26,237 WARN L854 $PredicateComparison]: unable to prove that (forall ((|main_#t~nondet0| (_ FloatingPoint 11 53)) (v_subst_1 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse1 (fp.neg .cse0))) (or (fp.geq (fp.sub RNE (fp.add RNE (fp.mul RNE ((_ to_fp 11 53) RNE (/ 999.0 1000.0)) ((_ to_fp 11 53) RNE (_ bv0 32))) v_subst_1) |main_#t~nondet0|) (fp.neg ((_ to_fp 11 53) RNE 10000.0))) (not (fp.leq v_subst_1 .cse0)) (not (fp.leq |main_#t~nondet0| .cse0)) (not (fp.geq |main_#t~nondet0| .cse1)) (not (fp.geq v_subst_1 .cse1)))))) is different from true [2018-11-10 04:05:38,333 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:05:38,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-11-10 04:05:38,334 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-10 04:05:38,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-10 04:05:38,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=103, Unknown=31, NotChecked=232, Total=420 [2018-11-10 04:05:38,334 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 10 states. [2018-11-10 04:05:58,733 WARN L179 SmtUtils]: Spent 2.52 s on a formula simplification that was a NOOP. DAG size: 22 [2018-11-10 04:05:59,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:05:59,607 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2018-11-10 04:05:59,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-10 04:05:59,608 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2018-11-10 04:05:59,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:05:59,609 INFO L225 Difference]: With dead ends: 60 [2018-11-10 04:05:59,609 INFO L226 Difference]: Without dead ends: 42 [2018-11-10 04:05:59,609 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 79 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 168.3s TimeCoverageRelationStatistics Valid=58, Invalid=117, Unknown=39, NotChecked=248, Total=462 [2018-11-10 04:05:59,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-10 04:05:59,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2018-11-10 04:05:59,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-10 04:05:59,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2018-11-10 04:05:59,615 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 27 [2018-11-10 04:05:59,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:05:59,616 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2018-11-10 04:05:59,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-10 04:05:59,616 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2018-11-10 04:05:59,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-10 04:05:59,616 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:05:59,617 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:05:59,617 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:05:59,617 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:05:59,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1213495053, now seen corresponding path program 1 times [2018-11-10 04:05:59,617 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 04:05:59,617 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/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 [2018-11-10 04:05:59,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:06:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:06:00,703 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:06:04,088 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~main__E0~0 (_ FloatingPoint 11 53)) (main_~main__E1~0 (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse0 (fp.neg .cse3))) (and (fp.geq main_~main__E0~0 .cse0) (= c_main_~main__S~0 (fp.sub RNE (fp.add RNE (let ((.cse1 ((_ to_fp 11 53) RNE (/ 999.0 1000.0)))) (fp.mul RNE .cse1 (let ((.cse2 ((_ to_fp 11 53) RNE (_ bv0 32)))) (fp.sub RNE (fp.add RNE (fp.mul RNE .cse1 .cse2) main_~main__E1~0) .cse2)))) main_~main__E0~0) main_~main__E1~0)) (fp.leq main_~main__E0~0 .cse3) (fp.geq main_~main__E1~0 .cse0) (fp.leq main_~main__E1~0 .cse3))))) is different from true [2018-11-10 04:06:10,204 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~main__E0~0 (_ FloatingPoint 11 53)) (main_~main__E1~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse0 (fp.neg .cse1))) (and (fp.geq main_~main__E0~0 .cse0) (fp.leq main_~main__E0~0 .cse1) (fp.geq main_~main__E1~0 .cse0) (not (fp.geq (fp.sub RNE (fp.add RNE (let ((.cse2 ((_ to_fp 11 53) RNE (/ 999.0 1000.0)))) (fp.mul RNE .cse2 (let ((.cse3 ((_ to_fp 11 53) RNE (_ bv0 32)))) (fp.sub RNE (fp.add RNE (fp.mul RNE .cse2 .cse3) main_~main__E1~0) .cse3)))) main_~main__E0~0) main_~main__E1~0) (fp.neg ((_ to_fp 11 53) RNE 10000.0)))) (fp.leq main_~main__E1~0 .cse1))))) is different from false [2018-11-10 04:06:12,234 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~main__E0~0 (_ FloatingPoint 11 53)) (main_~main__E1~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse0 (fp.neg .cse1))) (and (fp.geq main_~main__E0~0 .cse0) (fp.leq main_~main__E0~0 .cse1) (fp.geq main_~main__E1~0 .cse0) (not (fp.geq (fp.sub RNE (fp.add RNE (let ((.cse2 ((_ to_fp 11 53) RNE (/ 999.0 1000.0)))) (fp.mul RNE .cse2 (let ((.cse3 ((_ to_fp 11 53) RNE (_ bv0 32)))) (fp.sub RNE (fp.add RNE (fp.mul RNE .cse2 .cse3) main_~main__E1~0) .cse3)))) main_~main__E0~0) main_~main__E1~0) (fp.neg ((_ to_fp 11 53) RNE 10000.0)))) (fp.leq main_~main__E1~0 .cse1))))) is different from true [2018-11-10 04:06:24,440 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2018-11-10 04:06:24,440 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 04:06:26,501 WARN L832 $PredicateComparison]: unable to prove that (fp.geq (fp.sub RNE (fp.add RNE (fp.mul RNE ((_ to_fp 11 53) RNE (/ 999.0 1000.0)) c_main_~main__S~0) c_main_~main__E0~0) c_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) RNE 10000.0))) is different from false [2018-11-10 04:06:28,535 WARN L854 $PredicateComparison]: unable to prove that (fp.geq (fp.sub RNE (fp.add RNE (fp.mul RNE ((_ to_fp 11 53) RNE (/ 999.0 1000.0)) c_main_~main__S~0) c_main_~main__E0~0) c_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) RNE 10000.0))) is different from true [2018-11-10 04:06:30,573 WARN L832 $PredicateComparison]: unable to prove that (or (fp.geq (fp.sub RNE (fp.add RNE (fp.mul RNE ((_ to_fp 11 53) RNE (/ 999.0 1000.0)) c_main_~main__S~0) c_main_~main__E0~0) c_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) RNE 10000.0))) (not (fp.leq c_main_~main__E0~0 ((_ to_fp 11 53) RNE 1.0)))) is different from false [2018-11-10 04:06:54,012 WARN L179 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 22 [2018-11-10 04:07:15,916 WARN L179 SmtUtils]: Spent 8.93 s on a formula simplification that was a NOOP. DAG size: 25 [2018-11-10 04:07:17,960 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE 10000.0))) (or (forall ((main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (or (not (fp.geq main_~main__E0~0 (fp.neg .cse0))) (fp.geq (fp.sub RNE (fp.add RNE (fp.mul RNE ((_ to_fp 11 53) RNE (/ 999.0 1000.0)) c_main_~main__S~0) main_~main__E0~0) c_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) RNE 10000.0))) (not (fp.leq main_~main__E0~0 .cse0))))) (not (fp.leq c_main_~main__S~0 .cse1)) (not (fp.geq c_main_~main__S~0 (fp.neg .cse1))))) is different from true [2018-11-10 04:07:20,003 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE 10000.0))) (or (forall ((v_subst_3 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (or (not (fp.leq v_subst_3 .cse0)) (not (fp.geq v_subst_3 (fp.neg .cse0))) (fp.geq (fp.sub RNE (fp.add RNE (fp.mul RNE ((_ to_fp 11 53) RNE (/ 999.0 1000.0)) c_main_~main__S~0) v_subst_3) c_main_~main__E0~0) (fp.neg ((_ to_fp 11 53) RNE 10000.0)))))) (not (fp.leq c_main_~main__S~0 .cse1)) (not (fp.geq c_main_~main__S~0 (fp.neg .cse1))))) is different from true [2018-11-10 04:07:23,144 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub RNE (fp.add RNE (fp.mul RNE ((_ to_fp 11 53) RNE (/ 999.0 1000.0)) c_main_~main__S~0) c_main_~main__E0~0) c_main_~main__E1~0)) (.cse1 ((_ to_fp 11 53) RNE 10000.0))) (or (not (fp.geq .cse0 (fp.neg .cse1))) (forall ((v_subst_3 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) RNE 1.0))) (or (not (fp.leq v_subst_3 .cse2)) (not (fp.geq v_subst_3 (fp.neg .cse2))) (fp.geq (fp.sub RNE (fp.add RNE (let ((.cse3 ((_ to_fp 11 53) RNE (/ 999.0 1000.0)))) (fp.mul RNE .cse3 (fp.sub RNE (fp.add RNE (fp.mul RNE .cse3 c_main_~main__S~0) c_main_~main__E0~0) c_main_~main__E1~0))) v_subst_3) c_main_~main__E0~0) (fp.neg ((_ to_fp 11 53) RNE 10000.0)))))) (not (fp.leq .cse0 .cse1)))) is different from true [2018-11-10 04:07:25,183 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub RNE (fp.add RNE (fp.mul RNE ((_ to_fp 11 53) RNE (/ 999.0 1000.0)) c_main_~main__S~0) c_main_~main__E0~0) c_main_~main__E1~0)) (.cse1 ((_ to_fp 11 53) RNE 10000.0))) (or (not (fp.geq .cse0 (fp.neg .cse1))) (forall ((v_subst_3 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) RNE 1.0))) (or (not (fp.leq v_subst_3 .cse2)) (not (fp.geq v_subst_3 (fp.neg .cse2))) (fp.geq (fp.sub RNE (fp.add RNE (let ((.cse3 ((_ to_fp 11 53) RNE (/ 999.0 1000.0)))) (fp.mul RNE .cse3 (fp.sub RNE (fp.add RNE (fp.mul RNE .cse3 c_main_~main__S~0) c_main_~main__E0~0) c_main_~main__E1~0))) v_subst_3) c_main_~main__E0~0) (fp.neg ((_ to_fp 11 53) RNE 10000.0)))))) (not (fp.leq .cse0 .cse1)) (not (fp.leq c_main_~main__E0~0 ((_ to_fp 11 53) RNE 1.0))))) is different from false [2018-11-10 04:07:27,251 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub RNE (fp.add RNE (fp.mul RNE ((_ to_fp 11 53) RNE (/ 999.0 1000.0)) c_main_~main__S~0) c_main_~main__E0~0) c_main_~main__E1~0)) (.cse1 ((_ to_fp 11 53) RNE 10000.0))) (or (not (fp.geq .cse0 (fp.neg .cse1))) (forall ((v_subst_3 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) RNE 1.0))) (or (not (fp.leq v_subst_3 .cse2)) (not (fp.geq v_subst_3 (fp.neg .cse2))) (fp.geq (fp.sub RNE (fp.add RNE (let ((.cse3 ((_ to_fp 11 53) RNE (/ 999.0 1000.0)))) (fp.mul RNE .cse3 (fp.sub RNE (fp.add RNE (fp.mul RNE .cse3 c_main_~main__S~0) c_main_~main__E0~0) c_main_~main__E1~0))) v_subst_3) c_main_~main__E0~0) (fp.neg ((_ to_fp 11 53) RNE 10000.0)))))) (not (fp.leq .cse0 .cse1)) (not (fp.leq c_main_~main__E0~0 ((_ to_fp 11 53) RNE 1.0))))) is different from true [2018-11-10 04:07:29,289 WARN L832 $PredicateComparison]: unable to prove that (forall ((main_~main__E0~0 (_ FloatingPoint 11 53)) (v_subst_3 (_ FloatingPoint 11 53))) (let ((.cse4 ((_ to_fp 11 53) RNE (/ 999.0 1000.0))) (.cse5 ((_ to_fp 11 53) RNE 10000.0)) (.cse1 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse0 (fp.neg .cse1)) (.cse3 (fp.neg .cse5)) (.cse2 (fp.sub RNE (fp.add RNE (fp.mul RNE .cse4 c_main_~main__S~0) main_~main__E0~0) c_main_~main__E1~0))) (or (not (fp.geq main_~main__E0~0 .cse0)) (not (fp.leq v_subst_3 .cse1)) (not (fp.geq v_subst_3 .cse0)) (not (fp.geq .cse2 .cse3)) (fp.geq (fp.sub RNE (fp.add RNE (fp.mul RNE .cse4 .cse2) v_subst_3) main_~main__E0~0) .cse3) (not (fp.leq .cse2 .cse5)) (not (fp.leq main_~main__E0~0 .cse1)))))) is different from false [2018-11-10 04:07:31,353 WARN L854 $PredicateComparison]: unable to prove that (forall ((main_~main__E0~0 (_ FloatingPoint 11 53)) (v_subst_3 (_ FloatingPoint 11 53))) (let ((.cse4 ((_ to_fp 11 53) RNE (/ 999.0 1000.0))) (.cse5 ((_ to_fp 11 53) RNE 10000.0)) (.cse1 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse0 (fp.neg .cse1)) (.cse3 (fp.neg .cse5)) (.cse2 (fp.sub RNE (fp.add RNE (fp.mul RNE .cse4 c_main_~main__S~0) main_~main__E0~0) c_main_~main__E1~0))) (or (not (fp.geq main_~main__E0~0 .cse0)) (not (fp.leq v_subst_3 .cse1)) (not (fp.geq v_subst_3 .cse0)) (not (fp.geq .cse2 .cse3)) (fp.geq (fp.sub RNE (fp.add RNE (fp.mul RNE .cse4 .cse2) v_subst_3) main_~main__E0~0) .cse3) (not (fp.leq .cse2 .cse5)) (not (fp.leq main_~main__E0~0 .cse1)))))) is different from true [2018-11-10 04:07:35,424 WARN L832 $PredicateComparison]: unable to prove that (forall ((main_~main__E0~0 (_ FloatingPoint 11 53)) (v_subst_3 (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) RNE 10000.0)) (.cse5 ((_ to_fp 11 53) RNE (/ 999.0 1000.0))) (.cse1 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse0 (fp.neg .cse1)) (.cse2 (let ((.cse6 ((_ to_fp 11 53) RNE (_ bv0 32)))) (fp.sub RNE (fp.add RNE (fp.mul RNE .cse5 .cse6) main_~main__E0~0) .cse6))) (.cse4 (fp.neg .cse3))) (or (not (fp.geq main_~main__E0~0 .cse0)) (not (fp.leq v_subst_3 .cse1)) (not (fp.geq v_subst_3 .cse0)) (not (fp.leq .cse2 .cse3)) (not (fp.geq .cse2 .cse4)) (fp.geq (fp.sub RNE (fp.add RNE (fp.mul RNE .cse5 .cse2) v_subst_3) main_~main__E0~0) .cse4) (not (fp.leq main_~main__E0~0 .cse1)))))) is different from false [2018-11-10 04:07:37,459 WARN L854 $PredicateComparison]: unable to prove that (forall ((main_~main__E0~0 (_ FloatingPoint 11 53)) (v_subst_3 (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) RNE 10000.0)) (.cse5 ((_ to_fp 11 53) RNE (/ 999.0 1000.0))) (.cse1 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse0 (fp.neg .cse1)) (.cse2 (let ((.cse6 ((_ to_fp 11 53) RNE (_ bv0 32)))) (fp.sub RNE (fp.add RNE (fp.mul RNE .cse5 .cse6) main_~main__E0~0) .cse6))) (.cse4 (fp.neg .cse3))) (or (not (fp.geq main_~main__E0~0 .cse0)) (not (fp.leq v_subst_3 .cse1)) (not (fp.geq v_subst_3 .cse0)) (not (fp.leq .cse2 .cse3)) (not (fp.geq .cse2 .cse4)) (fp.geq (fp.sub RNE (fp.add RNE (fp.mul RNE .cse5 .cse2) v_subst_3) main_~main__E0~0) .cse4) (not (fp.leq main_~main__E0~0 .cse1)))))) is different from true [2018-11-10 04:07:45,625 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:07:45,626 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f54b566-ad67-4c01-9c21-6a4165719fb8/bin-2019/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 04:07:45,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:07:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2018-11-10 04:07:57,900 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-10 04:07:57,900 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-11-10 04:07:57,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-10 04:07:57,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-10 04:07:57,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=77, Unknown=28, NotChecked=290, Total=462 [2018-11-10 04:07:57,901 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 11 states. [2018-11-10 04:08:00,815 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE 1.0))) (and (= c_main_~main__S~0 (let ((.cse0 ((_ to_fp 11 53) RNE (_ bv0 32)))) (fp.sub RNE (fp.add RNE (fp.mul RNE ((_ to_fp 11 53) RNE (/ 999.0 1000.0)) .cse0) c_main_~main__E0~0) .cse0))) (fp.geq c_main_~main__E0~0 (fp.neg .cse1)) (fp.leq c_main_~main__E0~0 .cse1) (exists ((main_~main__E0~0 (_ FloatingPoint 11 53)) (main_~main__E1~0 (_ FloatingPoint 11 53))) (let ((.cse5 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse2 (fp.neg .cse5))) (and (fp.geq main_~main__E0~0 .cse2) (= c_main_~main__S~0 (fp.sub RNE (fp.add RNE (let ((.cse3 ((_ to_fp 11 53) RNE (/ 999.0 1000.0)))) (fp.mul RNE .cse3 (let ((.cse4 ((_ to_fp 11 53) RNE (_ bv0 32)))) (fp.sub RNE (fp.add RNE (fp.mul RNE .cse3 .cse4) main_~main__E1~0) .cse4)))) main_~main__E0~0) main_~main__E1~0)) (fp.leq main_~main__E0~0 .cse5) (fp.geq main_~main__E1~0 .cse2) (fp.leq main_~main__E1~0 .cse5))))))) is different from false [2018-11-10 04:08:27,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 04:08:27,336 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:141) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:928) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:767) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:339) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:382) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1066) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:968) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:188) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:673) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:602) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 43 more [2018-11-10 04:08:27,338 INFO L168 Benchmark]: Toolchain (without parser) took 383333.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 949.7 MB in the beginning and 890.0 MB in the end (delta: 59.7 MB). Peak memory consumption was 202.3 MB. Max. memory is 11.5 GB. [2018-11-10 04:08:27,338 INFO L168 Benchmark]: CDTParser took 0.16 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. [2018-11-10 04:08:27,339 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.59 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 04:08:27,339 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.73 ms. Allocated memory is still 1.0 GB. Free memory was 939.0 MB in the beginning and 933.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-10 04:08:27,339 INFO L168 Benchmark]: Boogie Preprocessor took 15.35 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. [2018-11-10 04:08:27,340 INFO L168 Benchmark]: RCFGBuilder took 2229.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -172.3 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2018-11-10 04:08:27,340 INFO L168 Benchmark]: TraceAbstraction took 380899.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 890.0 MB in the end (delta: 215.9 MB). Peak memory consumption was 215.9 MB. Max. memory is 11.5 GB. [2018-11-10 04:08:27,342 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 170.59 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 14.73 ms. Allocated memory is still 1.0 GB. Free memory was 939.0 MB in the beginning and 933.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.35 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 2229.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -172.3 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 380899.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 890.0 MB in the end (delta: 215.9 MB). Peak memory consumption was 215.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...