./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 858612fdb9071600e83746a6e504d4acbbe533c1 .......................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 858612fdb9071600e83746a6e504d4acbbe533c1 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:56:31,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:56:31,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:56:31,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:56:31,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:56:31,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:56:31,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:56:31,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:56:31,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:56:31,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:56:31,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:56:31,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:56:31,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:56:31,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:56:31,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:56:31,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:56:31,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:56:31,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:56:31,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:56:31,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:56:31,705 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:56:31,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:56:31,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:56:31,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:56:31,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:56:31,713 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:56:31,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:56:31,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:56:31,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:56:31,716 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:56:31,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:56:31,718 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:56:31,719 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:56:31,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:56:31,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:56:31,721 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:56:31,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:56:31,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:56:31,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:56:31,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:56:31,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:56:31,726 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:56:31,751 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:56:31,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:56:31,753 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:56:31,753 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:56:31,753 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:56:31,754 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:56:31,754 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:56:31,755 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:56:31,755 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:56:31,755 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:56:31,756 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:56:31,756 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:56:31,756 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:56:31,757 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:56:31,757 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:56:31,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:56:31,758 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:56:31,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:56:31,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:56:31,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:56:31,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:56:31,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:56:31,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:56:31,760 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:56:31,760 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:56:31,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:56:31,761 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:56:31,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:56:31,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:56:31,761 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:56:31,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:56:31,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:56:31,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:56:31,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:56:31,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:56:31,763 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:56:31,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:56:31,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:56:31,763 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:56:31,763 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:56:31,764 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 858612fdb9071600e83746a6e504d4acbbe533c1 [2020-11-22 12:56:32,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:56:32,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:56:32,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:56:32,052 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:56:32,054 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:56:32,055 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2020-11-22 12:56:32,134 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/utaipan/data/2b93e6949/98ca2d54230c4f20b5328705a7ea6f16/FLAGbc374ab27 [2020-11-22 12:56:32,549 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:56:32,550 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2020-11-22 12:56:32,560 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/utaipan/data/2b93e6949/98ca2d54230c4f20b5328705a7ea6f16/FLAGbc374ab27 [2020-11-22 12:56:32,952 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/utaipan/data/2b93e6949/98ca2d54230c4f20b5328705a7ea6f16 [2020-11-22 12:56:32,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:56:32,956 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:56:32,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:56:32,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:56:32,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:56:32,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:56:32" (1/1) ... [2020-11-22 12:56:32,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bc3bb3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:32, skipping insertion in model container [2020-11-22 12:56:32,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:56:32" (1/1) ... [2020-11-22 12:56:32,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:56:32,996 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:56:33,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:56:33,177 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:56:33,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:56:33,209 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:56:33,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:33 WrapperNode [2020-11-22 12:56:33,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:56:33,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:56:33,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:56:33,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:56:33,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:33" (1/1) ... [2020-11-22 12:56:33,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:33" (1/1) ... [2020-11-22 12:56:33,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:56:33,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:56:33,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:56:33,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:56:33,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:33" (1/1) ... [2020-11-22 12:56:33,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:33" (1/1) ... [2020-11-22 12:56:33,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:33" (1/1) ... [2020-11-22 12:56:33,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:33" (1/1) ... [2020-11-22 12:56:33,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:33" (1/1) ... [2020-11-22 12:56:33,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:33" (1/1) ... [2020-11-22 12:56:33,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:33" (1/1) ... [2020-11-22 12:56:33,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:56:33,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:56:33,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:56:33,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:56:33,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/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 [2020-11-22 12:56:33,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:56:33,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:56:33,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-22 12:56:33,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:56:33,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:56:33,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 12:56:33,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:56:34,070 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:56:34,071 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-22 12:56:34,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:34 BoogieIcfgContainer [2020-11-22 12:56:34,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:56:34,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:56:34,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:56:34,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:56:34,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:56:32" (1/3) ... [2020-11-22 12:56:34,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b084973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:56:34, skipping insertion in model container [2020-11-22 12:56:34,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:33" (2/3) ... [2020-11-22 12:56:34,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b084973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:56:34, skipping insertion in model container [2020-11-22 12:56:34,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:34" (3/3) ... [2020-11-22 12:56:34,084 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2020-11-22 12:56:34,096 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:56:34,100 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:56:34,114 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:56:34,148 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:56:34,149 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:56:34,149 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:56:34,149 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:56:34,149 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:56:34,149 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:56:34,149 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:56:34,150 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:56:34,164 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-22 12:56:34,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 12:56:34,171 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:34,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:34,172 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:34,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:34,178 INFO L82 PathProgramCache]: Analyzing trace with hash 40951417, now seen corresponding path program 1 times [2020-11-22 12:56:34,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:34,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172064140] [2020-11-22 12:56:34,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:34,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:34,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172064140] [2020-11-22 12:56:34,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:34,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:56:34,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72795823] [2020-11-22 12:56:34,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 12:56:34,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:34,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 12:56:34,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:56:34,333 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-11-22 12:56:34,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:34,348 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-11-22 12:56:34,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 12:56:34,349 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-22 12:56:34,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:34,357 INFO L225 Difference]: With dead ends: 27 [2020-11-22 12:56:34,358 INFO L226 Difference]: Without dead ends: 12 [2020-11-22 12:56:34,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:56:34,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-22 12:56:34,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-22 12:56:34,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-22 12:56:34,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-11-22 12:56:34,390 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2020-11-22 12:56:34,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:34,391 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-11-22 12:56:34,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 12:56:34,391 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-11-22 12:56:34,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 12:56:34,392 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:34,392 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:34,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:56:34,392 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:34,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:34,393 INFO L82 PathProgramCache]: Analyzing trace with hash 487400052, now seen corresponding path program 1 times [2020-11-22 12:56:34,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:34,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781493215] [2020-11-22 12:56:34,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:56:34,450 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:56:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:56:34,490 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:56:34,524 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 12:56:34,525 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 12:56:34,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:56:34,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:56:34 BoogieIcfgContainer [2020-11-22 12:56:34,557 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:56:34,558 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:56:34,558 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:56:34,558 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:56:34,558 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:34" (3/4) ... [2020-11-22 12:56:34,561 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 12:56:34,562 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:56:34,564 INFO L168 Benchmark]: Toolchain (without parser) took 1606.15 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 62.9 MB in the beginning and 64.3 MB in the end (delta: -1.4 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:34,565 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory was 53.5 MB in the beginning and 53.5 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:56:34,566 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.43 ms. Allocated memory is still 94.4 MB. Free memory was 62.7 MB in the beginning and 71.6 MB in the end (delta: -8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:34,566 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.34 ms. Allocated memory is still 94.4 MB. Free memory was 71.6 MB in the beginning and 69.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:34,567 INFO L168 Benchmark]: Boogie Preprocessor took 27.59 ms. Allocated memory is still 94.4 MB. Free memory was 69.5 MB in the beginning and 68.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:34,568 INFO L168 Benchmark]: RCFGBuilder took 797.17 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 68.3 MB in the beginning and 88.0 MB in the end (delta: -19.7 MB). Peak memory consumption was 37.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:34,569 INFO L168 Benchmark]: TraceAbstraction took 482.18 ms. Allocated memory is still 113.2 MB. Free memory was 87.4 MB in the beginning and 64.9 MB in the end (delta: 22.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:34,570 INFO L168 Benchmark]: Witness Printer took 4.27 ms. Allocated memory is still 113.2 MB. Free memory was 64.9 MB in the beginning and 64.3 MB in the end (delta: 574.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:34,573 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory was 53.5 MB in the beginning and 53.5 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 240.43 ms. Allocated memory is still 94.4 MB. Free memory was 62.7 MB in the beginning and 71.6 MB in the end (delta: -8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.34 ms. Allocated memory is still 94.4 MB. Free memory was 71.6 MB in the beginning and 69.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.59 ms. Allocated memory is still 94.4 MB. Free memory was 69.5 MB in the beginning and 68.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 797.17 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 68.3 MB in the beginning and 88.0 MB in the end (delta: -19.7 MB). Peak memory consumption was 37.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 482.18 ms. Allocated memory is still 113.2 MB. Free memory was 87.4 MB in the beginning and 64.9 MB in the end (delta: 22.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.27 ms. Allocated memory is still 113.2 MB. Free memory was 64.9 MB in the beginning and 64.3 MB in the end (delta: 574.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 63. Possible FailurePath: [L63] double x = 0.0 / 0.0; [L64] double y = 0.0 / 0.0; [L20] __uint32_t msw, lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L29-L30] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L32-L33] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L35-L36] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L39-L40] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L43] return 0; [L47] COND TRUE __fpclassify_double(x) == 0 [L48] return y; [L65] double res = fmin_double(x, y); [L18] return x != x; [L67] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_1230.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: 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 0.2.0-a4ecdab [2020-11-22 12:56:37,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:56:37,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:56:37,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:56:37,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:56:37,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:56:37,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:56:37,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:56:37,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:56:37,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:56:37,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:56:37,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:56:37,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:56:37,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:56:37,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:56:37,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:56:37,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:56:37,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:56:37,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:56:37,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:56:37,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:56:37,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:56:37,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:56:37,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:56:37,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:56:37,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:56:37,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:56:37,132 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:56:37,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:56:37,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:56:37,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:56:37,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:56:37,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:56:37,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:56:37,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:56:37,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:56:37,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:56:37,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:56:37,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:56:37,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:56:37,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:56:37,146 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-22 12:56:37,211 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:56:37,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:56:37,213 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:56:37,213 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:56:37,213 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:56:37,214 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:56:37,214 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:56:37,214 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:56:37,214 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:56:37,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:56:37,217 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:56:37,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:56:37,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:56:37,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:56:37,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:56:37,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:56:37,218 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:56:37,218 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 12:56:37,218 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 12:56:37,218 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:56:37,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:56:37,219 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:56:37,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:56:37,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:56:37,219 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 12:56:37,220 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:56:37,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:56:37,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:56:37,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:56:37,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:56:37,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:56:37,221 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 12:56:37,221 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 12:56:37,221 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:56:37,221 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:56:37,222 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:56:37,222 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 858612fdb9071600e83746a6e504d4acbbe533c1 [2020-11-22 12:56:37,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:56:37,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:56:37,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:56:37,629 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:56:37,630 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:56:37,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2020-11-22 12:56:37,707 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/utaipan/data/121004202/824a9ede6ffe4712839ba4ca4749c833/FLAGf59ea9a3f [2020-11-22 12:56:38,167 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:56:38,167 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2020-11-22 12:56:38,174 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/utaipan/data/121004202/824a9ede6ffe4712839ba4ca4749c833/FLAGf59ea9a3f [2020-11-22 12:56:38,537 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/utaipan/data/121004202/824a9ede6ffe4712839ba4ca4749c833 [2020-11-22 12:56:38,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:56:38,542 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:56:38,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:56:38,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:56:38,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:56:38,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:56:38" (1/1) ... [2020-11-22 12:56:38,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a960cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:38, skipping insertion in model container [2020-11-22 12:56:38,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:56:38" (1/1) ... [2020-11-22 12:56:38,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:56:38,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:56:38,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:56:38,779 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:56:38,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:56:38,859 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:56:38,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:38 WrapperNode [2020-11-22 12:56:38,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:56:38,864 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:56:38,864 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:56:38,864 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:56:38,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:38" (1/1) ... [2020-11-22 12:56:38,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:38" (1/1) ... [2020-11-22 12:56:38,932 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:56:38,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:56:38,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:56:38,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:56:38,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:38" (1/1) ... [2020-11-22 12:56:38,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:38" (1/1) ... [2020-11-22 12:56:38,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:38" (1/1) ... [2020-11-22 12:56:38,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:38" (1/1) ... [2020-11-22 12:56:38,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:38" (1/1) ... [2020-11-22 12:56:38,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:38" (1/1) ... [2020-11-22 12:56:38,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:38" (1/1) ... [2020-11-22 12:56:39,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:56:39,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:56:39,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:56:39,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:56:39,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/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 [2020-11-22 12:56:39,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-22 12:56:39,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 12:56:39,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:56:39,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-22 12:56:39,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:56:39,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:56:39,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:56:39,627 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:56:39,627 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-22 12:56:39,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:39 BoogieIcfgContainer [2020-11-22 12:56:39,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:56:39,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:56:39,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:56:39,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:56:39,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:56:38" (1/3) ... [2020-11-22 12:56:39,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b702241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:56:39, skipping insertion in model container [2020-11-22 12:56:39,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:38" (2/3) ... [2020-11-22 12:56:39,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b702241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:56:39, skipping insertion in model container [2020-11-22 12:56:39,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:39" (3/3) ... [2020-11-22 12:56:39,642 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2020-11-22 12:56:39,652 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:56:39,655 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:56:39,666 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:56:39,686 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:56:39,686 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:56:39,687 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:56:39,687 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:56:39,687 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:56:39,687 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:56:39,687 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:56:39,687 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:56:39,699 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-22 12:56:39,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 12:56:39,703 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:39,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:39,704 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:39,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:39,708 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2020-11-22 12:56:39,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:56:39,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925216337] [2020-11-22 12:56:39,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/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 [2020-11-22 12:56:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:39,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-22 12:56:39,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:39,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:39,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:39,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:39,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1925216337] [2020-11-22 12:56:39,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:39,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 12:56:39,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135595555] [2020-11-22 12:56:39,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 12:56:39,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:56:39,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 12:56:39,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:56:39,943 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-11-22 12:56:39,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:39,967 INFO L93 Difference]: Finished difference Result 55 states and 85 transitions. [2020-11-22 12:56:39,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 12:56:39,970 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-22 12:56:39,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:39,987 INFO L225 Difference]: With dead ends: 55 [2020-11-22 12:56:39,988 INFO L226 Difference]: Without dead ends: 25 [2020-11-22 12:56:39,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:56:40,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-22 12:56:40,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-22 12:56:40,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-22 12:56:40,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-11-22 12:56:40,030 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2020-11-22 12:56:40,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:40,031 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-11-22 12:56:40,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 12:56:40,031 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-11-22 12:56:40,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 12:56:40,032 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:40,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:40,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 12:56:40,258 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:40,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:40,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2020-11-22 12:56:40,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:56:40,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336819968] [2020-11-22 12:56:40,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/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 [2020-11-22 12:56:40,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:40,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 12:56:40,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:40,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:40,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:40,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:40,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [336819968] [2020-11-22 12:56:40,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:40,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-22 12:56:40,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519773374] [2020-11-22 12:56:40,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:56:40,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:56:40,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:56:40,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:56:40,441 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 6 states. [2020-11-22 12:56:40,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:40,574 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2020-11-22 12:56:40,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:56:40,576 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-22 12:56:40,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:40,577 INFO L225 Difference]: With dead ends: 52 [2020-11-22 12:56:40,577 INFO L226 Difference]: Without dead ends: 47 [2020-11-22 12:56:40,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-22 12:56:40,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-22 12:56:40,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-11-22 12:56:40,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-22 12:56:40,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-22 12:56:40,585 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2020-11-22 12:56:40,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:40,585 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-22 12:56:40,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:56:40,586 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-22 12:56:40,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 12:56:40,589 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:40,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:40,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 12:56:40,803 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:40,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:40,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2020-11-22 12:56:40,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:56:40,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588784873] [2020-11-22 12:56:40,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/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 [2020-11-22 12:56:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:40,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-22 12:56:40,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:41,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:41,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:41,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:41,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588784873] [2020-11-22 12:56:41,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:41,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-22 12:56:41,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482136480] [2020-11-22 12:56:41,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-22 12:56:41,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:56:41,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-22 12:56:41,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-22 12:56:41,205 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 10 states. [2020-11-22 12:56:41,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:41,646 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2020-11-22 12:56:41,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:56:41,651 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-11-22 12:56:41,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:41,652 INFO L225 Difference]: With dead ends: 36 [2020-11-22 12:56:41,652 INFO L226 Difference]: Without dead ends: 27 [2020-11-22 12:56:41,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-22 12:56:41,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-22 12:56:41,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-11-22 12:56:41,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-22 12:56:41,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2020-11-22 12:56:41,657 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2020-11-22 12:56:41,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:41,658 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2020-11-22 12:56:41,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-22 12:56:41,658 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-11-22 12:56:41,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-22 12:56:41,659 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:41,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:41,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 12:56:41,860 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:41,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:41,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2020-11-22 12:56:41,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:56:41,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [273420672] [2020-11-22 12:56:41,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/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 [2020-11-22 12:56:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:42,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 12:56:42,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:42,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:42,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:42,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:42,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [273420672] [2020-11-22 12:56:42,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:42,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-22 12:56:42,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783346151] [2020-11-22 12:56:42,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:56:42,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:56:42,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:56:42,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:56:42,085 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 6 states. [2020-11-22 12:56:42,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:42,242 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-11-22 12:56:42,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:56:42,246 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-22 12:56:42,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:42,247 INFO L225 Difference]: With dead ends: 52 [2020-11-22 12:56:42,247 INFO L226 Difference]: Without dead ends: 47 [2020-11-22 12:56:42,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-22 12:56:42,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-22 12:56:42,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-11-22 12:56:42,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-22 12:56:42,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-11-22 12:56:42,254 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2020-11-22 12:56:42,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:42,254 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-22 12:56:42,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:56:42,255 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2020-11-22 12:56:42,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-22 12:56:42,255 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:42,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:42,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-22 12:56:42,456 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:42,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:42,457 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2020-11-22 12:56:42,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:56:42,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331715022] [2020-11-22 12:56:42,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/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 [2020-11-22 12:56:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:42,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-22 12:56:42,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:42,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:42,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:42,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:42,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331715022] [2020-11-22 12:56:42,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:42,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-11-22 12:56:42,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980279791] [2020-11-22 12:56:42,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-22 12:56:42,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:56:42,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-22 12:56:42,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-22 12:56:42,946 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 12 states. [2020-11-22 12:56:43,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:43,452 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2020-11-22 12:56:43,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 12:56:43,453 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-11-22 12:56:43,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:43,454 INFO L225 Difference]: With dead ends: 32 [2020-11-22 12:56:43,454 INFO L226 Difference]: Without dead ends: 23 [2020-11-22 12:56:43,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-11-22 12:56:43,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-22 12:56:43,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-22 12:56:43,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-22 12:56:43,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-11-22 12:56:43,458 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2020-11-22 12:56:43,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:43,459 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-11-22 12:56:43,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-22 12:56:43,459 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-11-22 12:56:43,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-22 12:56:43,459 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:43,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:43,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-22 12:56:43,663 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:43,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:43,663 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2020-11-22 12:56:43,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:56:43,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [831874978] [2020-11-22 12:56:43,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-22 12:56:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:43,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-22 12:56:43,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:43,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:43,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:43,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:43,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [831874978] [2020-11-22 12:56:43,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:43,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-22 12:56:43,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440416585] [2020-11-22 12:56:43,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-22 12:56:43,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:56:43,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-22 12:56:43,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-22 12:56:43,960 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 10 states. [2020-11-22 12:56:44,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:44,290 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-11-22 12:56:44,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:56:44,290 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-11-22 12:56:44,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:44,291 INFO L225 Difference]: With dead ends: 23 [2020-11-22 12:56:44,291 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:56:44,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-22 12:56:44,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:56:44,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:56:44,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:56:44,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:56:44,292 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-11-22 12:56:44,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:44,292 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:56:44,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-22 12:56:44,292 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:56:44,292 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:56:44,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-22 12:56:44,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:56:44,692 INFO L274 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-11-22 12:56:44,693 INFO L274 CegarLoopResult]: For program point L52-2(line 52) no Hoare annotation was computed. [2020-11-22 12:56:44,693 INFO L270 CegarLoopResult]: At program point L52-3(lines 46 53) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_fmin_double_#res|)) (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y))) [2020-11-22 12:56:44,693 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-22 12:56:44,693 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-22 12:56:44,693 INFO L274 CegarLoopResult]: For program point L32(lines 32 43) no Hoare annotation was computed. [2020-11-22 12:56:44,693 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-22 12:56:44,693 INFO L274 CegarLoopResult]: For program point L32-1(lines 32 43) no Hoare annotation was computed. [2020-11-22 12:56:44,693 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:56:44,693 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-22 12:56:44,693 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-22 12:56:44,693 INFO L274 CegarLoopResult]: For program point L49(lines 49 50) no Hoare annotation was computed. [2020-11-22 12:56:44,694 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:56:44,694 INFO L274 CegarLoopResult]: For program point L67(lines 67 70) no Hoare annotation was computed. [2020-11-22 12:56:44,694 INFO L274 CegarLoopResult]: For program point L22-1(lines 22 27) no Hoare annotation was computed. [2020-11-22 12:56:44,694 INFO L270 CegarLoopResult]: At program point L22-2(lines 22 27) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x)) (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y))) [2020-11-22 12:56:44,694 INFO L274 CegarLoopResult]: For program point L22-3(lines 19 44) no Hoare annotation was computed. [2020-11-22 12:56:44,694 INFO L270 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_fmin_double_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|) (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y))) [2020-11-22 12:56:44,694 INFO L274 CegarLoopResult]: For program point L22-5(lines 22 27) no Hoare annotation was computed. [2020-11-22 12:56:44,694 INFO L270 CegarLoopResult]: At program point L22-6(lines 22 27) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x)) (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y))) [2020-11-22 12:56:44,694 INFO L274 CegarLoopResult]: For program point L47(lines 47 48) no Hoare annotation was computed. [2020-11-22 12:56:44,694 INFO L274 CegarLoopResult]: For program point L22-7(lines 19 44) no Hoare annotation was computed. [2020-11-22 12:56:44,694 INFO L270 CegarLoopResult]: At program point L43(lines 19 44) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x)) (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y))) [2020-11-22 12:56:44,695 INFO L270 CegarLoopResult]: At program point L43-1(lines 19 44) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)))) (or (and (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_double_#res|)) .cse0) (and (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x)) .cse0))) [2020-11-22 12:56:44,695 INFO L277 CegarLoopResult]: At program point L72(lines 55 73) the Hoare annotation is: true [2020-11-22 12:56:44,695 INFO L274 CegarLoopResult]: For program point L39(lines 39 43) no Hoare annotation was computed. [2020-11-22 12:56:44,695 INFO L274 CegarLoopResult]: For program point L39-1(lines 39 43) no Hoare annotation was computed. [2020-11-22 12:56:44,695 INFO L274 CegarLoopResult]: For program point L35(lines 35 43) no Hoare annotation was computed. [2020-11-22 12:56:44,695 INFO L274 CegarLoopResult]: For program point L35-1(lines 35 43) no Hoare annotation was computed. [2020-11-22 12:56:44,705 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 12:56:44,706 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 12:56:44,707 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 12:56:44,708 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 12:56:44,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:56:44 BoogieIcfgContainer [2020-11-22 12:56:44,710 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:56:44,711 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:56:44,711 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:56:44,711 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:56:44,711 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:39" (3/4) ... [2020-11-22 12:56:44,714 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:56:44,724 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-22 12:56:44,725 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-22 12:56:44,725 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 12:56:44,725 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:56:44,744 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && !~fp.eq~DOUBLE(y, y) [2020-11-22 12:56:44,745 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && 1bv32 == \result) && !~fp.eq~DOUBLE(y, y) [2020-11-22 12:56:44,745 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(0bv32 == \result) && !~fp.eq~DOUBLE(y, y)) || (!~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(y, y)) [2020-11-22 12:56:44,776 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1d0b83af-6fbf-40c0-997a-e7283e53e831/bin/utaipan/witness.graphml [2020-11-22 12:56:44,776 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:56:44,778 INFO L168 Benchmark]: Toolchain (without parser) took 6234.93 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 69.6 MB in the beginning and 85.6 MB in the end (delta: -16.1 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:44,778 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 58.7 MB. Free memory is still 41.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:56:44,779 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.37 ms. Allocated memory is still 86.0 MB. Free memory was 69.3 MB in the beginning and 69.3 MB in the end (delta: -33.7 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:44,779 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.66 ms. Allocated memory is still 86.0 MB. Free memory was 69.3 MB in the beginning and 67.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:56:44,780 INFO L168 Benchmark]: Boogie Preprocessor took 71.45 ms. Allocated memory is still 86.0 MB. Free memory was 67.6 MB in the beginning and 65.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:44,780 INFO L168 Benchmark]: RCFGBuilder took 625.05 ms. Allocated memory is still 86.0 MB. Free memory was 65.9 MB in the beginning and 45.9 MB in the end (delta: 20.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:44,781 INFO L168 Benchmark]: TraceAbstraction took 5078.68 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 45.6 MB in the beginning and 89.8 MB in the end (delta: -44.2 MB). Peak memory consumption was 36.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:44,781 INFO L168 Benchmark]: Witness Printer took 65.42 ms. Allocated memory is still 111.1 MB. Free memory was 89.8 MB in the beginning and 85.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:44,784 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 58.7 MB. Free memory is still 41.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 317.37 ms. Allocated memory is still 86.0 MB. Free memory was 69.3 MB in the beginning and 69.3 MB in the end (delta: -33.7 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.66 ms. Allocated memory is still 86.0 MB. Free memory was 69.3 MB in the beginning and 67.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 71.45 ms. Allocated memory is still 86.0 MB. Free memory was 67.6 MB in the beginning and 65.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 625.05 ms. Allocated memory is still 86.0 MB. Free memory was 65.9 MB in the beginning and 45.9 MB in the end (delta: 20.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5078.68 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 45.6 MB in the beginning and 89.8 MB in the end (delta: -44.2 MB). Peak memory consumption was 36.2 MB. Max. memory is 16.1 GB. * Witness Printer took 65.42 ms. Allocated memory is still 111.1 MB. Free memory was 89.8 MB in the beginning and 85.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (!(0bv32 == \result) && !~fp.eq~DOUBLE(y, y)) || (!~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(y, y)) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(y, y) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(y, y) - InvariantResult [Line: 46]: Loop Invariant [2020-11-22 12:56:44,792 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 12:56:44,792 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && !~fp.eq~DOUBLE(y, y) - InvariantResult [Line: 18]: Loop Invariant [2020-11-22 12:56:44,793 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 12:56:44,793 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && 1bv32 == \result) && !~fp.eq~DOUBLE(y, y) - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(y, y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 182 SDtfs, 117 SDslu, 549 SDs, 0 SdLazy, 138 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 74 HoareAnnotationTreeSize, 7 FomulaSimplifications, 231 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 8416 SizeOfPredicates, 32 NumberOfNonLiveVariables, 399 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...