./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c -s /tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 ........................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c -s /tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:54:18,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:54:18,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:54:18,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:54:18,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:54:18,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:54:18,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:54:18,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:54:18,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:54:18,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:54:18,874 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:54:18,875 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:54:18,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:54:18,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:54:18,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:54:18,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:54:18,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:54:18,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:54:18,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:54:18,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:54:18,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:54:18,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:54:18,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:54:18,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:54:18,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:54:18,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:54:18,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:54:18,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:54:18,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:54:18,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:54:18,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:54:18,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:54:18,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:54:18,904 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:54:18,905 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:54:18,905 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:54:18,905 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:54:18,906 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:54:18,906 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:54:18,907 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:54:18,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:54:18,908 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:54:18,932 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:54:18,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:54:18,942 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:54:18,943 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:54:18,943 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:54:18,943 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:54:18,943 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:54:18,943 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:54:18,944 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:54:18,944 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:54:18,944 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:54:18,944 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:54:18,944 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:54:18,945 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:54:18,945 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:54:18,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:54:18,946 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:54:18,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:54:18,947 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:54:18,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:54:18,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:54:18,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:54:18,948 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:54:18,948 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:54:18,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:54:18,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:54:18,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:54:18,949 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:54:18,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:54:18,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:54:18,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:54:18,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:54:18,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:54:18,950 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:54:18,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:54:18,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:54:18,951 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:54:18,951 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/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(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 [2019-11-26 02:54:19,112 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:54:19,126 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:54:19,128 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:54:19,129 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:54:19,130 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:54:19,130 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2019-11-26 02:54:19,190 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/bin/utaipan/data/857a6f7f7/d8ed51d6760f4517846a20452e86fe66/FLAGfe2f8e10c [2019-11-26 02:54:19,563 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:54:19,564 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2019-11-26 02:54:19,569 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/bin/utaipan/data/857a6f7f7/d8ed51d6760f4517846a20452e86fe66/FLAGfe2f8e10c [2019-11-26 02:54:19,982 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/bin/utaipan/data/857a6f7f7/d8ed51d6760f4517846a20452e86fe66 [2019-11-26 02:54:19,984 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:54:19,986 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:54:19,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:54:19,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:54:19,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:54:19,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:54:19" (1/1) ... [2019-11-26 02:54:19,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@235c4113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:19, skipping insertion in model container [2019-11-26 02:54:19,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:54:19" (1/1) ... [2019-11-26 02:54:20,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:54:20,017 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:54:20,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:54:20,229 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:54:20,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:54:20,269 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:54:20,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:20 WrapperNode [2019-11-26 02:54:20,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:54:20,270 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:54:20,270 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:54:20,270 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:54:20,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:20" (1/1) ... [2019-11-26 02:54:20,285 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:20" (1/1) ... [2019-11-26 02:54:20,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:54:20,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:54:20,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:54:20,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:54:20,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:20" (1/1) ... [2019-11-26 02:54:20,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:20" (1/1) ... [2019-11-26 02:54:20,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:20" (1/1) ... [2019-11-26 02:54:20,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:20" (1/1) ... [2019-11-26 02:54:20,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:20" (1/1) ... [2019-11-26 02:54:20,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:20" (1/1) ... [2019-11-26 02:54:20,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:20" (1/1) ... [2019-11-26 02:54:20,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:54:20,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:54:20,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:54:20,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:54:20,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/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 [2019-11-26 02:54:20,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-26 02:54:20,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:54:20,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:54:20,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:54:20,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:54:20,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:54:21,015 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:54:21,015 INFO L284 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-26 02:54:21,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:54:21 BoogieIcfgContainer [2019-11-26 02:54:21,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:54:21,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:54:21,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:54:21,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:54:21,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:54:19" (1/3) ... [2019-11-26 02:54:21,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@307a5ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:54:21, skipping insertion in model container [2019-11-26 02:54:21,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:20" (2/3) ... [2019-11-26 02:54:21,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@307a5ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:54:21, skipping insertion in model container [2019-11-26 02:54:21,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:54:21" (3/3) ... [2019-11-26 02:54:21,028 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2019-11-26 02:54:21,037 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:54:21,043 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:54:21,053 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:54:21,073 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:54:21,073 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:54:21,073 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:54:21,073 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:54:21,073 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:54:21,074 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:54:21,074 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:54:21,074 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:54:21,084 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-26 02:54:21,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:54:21,088 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:54:21,089 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:54:21,089 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:54:21,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:54:21,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1732211786, now seen corresponding path program 1 times [2019-11-26 02:54:21,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:54:21,103 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598486841] [2019-11-26 02:54:21,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:54:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:54:21,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:21,194 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598486841] [2019-11-26 02:54:21,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:54:21,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:54:21,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694853981] [2019-11-26 02:54:21,200 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:54:21,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:54:21,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:54:21,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:54:21,215 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2019-11-26 02:54:21,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:54:21,231 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2019-11-26 02:54:21,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:54:21,232 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-11-26 02:54:21,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:54:21,240 INFO L225 Difference]: With dead ends: 27 [2019-11-26 02:54:21,241 INFO L226 Difference]: Without dead ends: 12 [2019-11-26 02:54:21,243 INFO L630 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 [2019-11-26 02:54:21,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-26 02:54:21,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-26 02:54:21,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-26 02:54:21,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-26 02:54:21,272 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2019-11-26 02:54:21,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:54:21,272 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-26 02:54:21,272 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:54:21,272 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-26 02:54:21,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:54:21,273 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:54:21,273 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:54:21,273 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:54:21,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:54:21,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1298590837, now seen corresponding path program 1 times [2019-11-26 02:54:21,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:54:21,274 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070640603] [2019-11-26 02:54:21,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:54:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:54:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:54:21,362 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:54:21,362 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:54:21,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:54:21 BoogieIcfgContainer [2019-11-26 02:54:21,386 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:54:21,386 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:54:21,386 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:54:21,386 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:54:21,387 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:54:21" (3/4) ... [2019-11-26 02:54:21,390 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-26 02:54:21,390 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:54:21,392 INFO L168 Benchmark]: Toolchain (without parser) took 1405.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 193.5 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -170.1 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:21,392 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:54:21,393 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 193.5 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -236.8 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:21,394 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.16 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:54:21,394 INFO L168 Benchmark]: Boogie Preprocessor took 61.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:21,395 INFO L168 Benchmark]: RCFGBuilder took 646.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:21,395 INFO L168 Benchmark]: TraceAbstraction took 368.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:21,396 INFO L168 Benchmark]: Witness Printer took 4.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:54:21,399 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 283.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 193.5 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -236.8 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.16 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 61.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 646.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 368.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Witness Printer took 4.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 65]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 54, overapproximation of someBinaryArithmeticFLOAToperation at line 60. Possible FailurePath: [L60] float x = 0.0f / 0.0f; [L61] float y = 0.0f / 0.0f; [L20] __uint32_t w; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (w) = gf_u.word [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] return 0; [L43] COND TRUE __fpclassify_float(x) == 0 [L44] return y; [L62] float res = fmax_float(x, y); [L54] return x != x; [L64] COND TRUE !isnan_float(res) [L65] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 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, 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 0.1.24-6b5699a [2019-11-26 02:54:23,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:54:23,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:54:23,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:54:23,307 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:54:23,308 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:54:23,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:54:23,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:54:23,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:54:23,326 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:54:23,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:54:23,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:54:23,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:54:23,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:54:23,337 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:54:23,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:54:23,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:54:23,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:54:23,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:54:23,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:54:23,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:54:23,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:54:23,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:54:23,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:54:23,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:54:23,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:54:23,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:54:23,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:54:23,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:54:23,366 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:54:23,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:54:23,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:54:23,368 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:54:23,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:54:23,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:54:23,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:54:23,371 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:54:23,371 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:54:23,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:54:23,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:54:23,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:54:23,374 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:54:23,401 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:54:23,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:54:23,412 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:54:23,412 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:54:23,412 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:54:23,412 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:54:23,413 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:54:23,413 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:54:23,413 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:54:23,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:54:23,414 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:54:23,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:54:23,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:54:23,415 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:54:23,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:54:23,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:54:23,416 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:54:23,417 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:54:23,417 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:54:23,417 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:54:23,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:54:23,417 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:54:23,418 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:54:23,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:54:23,418 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:54:23,418 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:54:23,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:54:23,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:54:23,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:54:23,420 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:54:23,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:54:23,420 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:54:23,421 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:54:23,421 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:54:23,421 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:54:23,421 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_bd4958f4-22fc-4bec-9052-4833c410a465/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(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 [2019-11-26 02:54:23,722 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:54:23,743 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:54:23,746 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:54:23,747 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:54:23,747 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:54:23,748 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2019-11-26 02:54:23,803 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/bin/utaipan/data/37454c010/cecb3bf544e54e2196b0a8f90798f7f2/FLAGf2383002b [2019-11-26 02:54:24,188 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:54:24,189 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2019-11-26 02:54:24,196 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/bin/utaipan/data/37454c010/cecb3bf544e54e2196b0a8f90798f7f2/FLAGf2383002b [2019-11-26 02:54:24,636 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/bin/utaipan/data/37454c010/cecb3bf544e54e2196b0a8f90798f7f2 [2019-11-26 02:54:24,638 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:54:24,640 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:54:24,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:54:24,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:54:24,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:54:24,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:54:24" (1/1) ... [2019-11-26 02:54:24,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61677559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:24, skipping insertion in model container [2019-11-26 02:54:24,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:54:24" (1/1) ... [2019-11-26 02:54:24,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:54:24,672 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:54:24,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:54:24,829 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:54:24,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:54:24,924 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:54:24,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:24 WrapperNode [2019-11-26 02:54:24,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:54:24,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:54:24,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:54:24,926 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:54:24,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:24" (1/1) ... [2019-11-26 02:54:24,943 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:24" (1/1) ... [2019-11-26 02:54:24,963 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:54:24,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:54:24,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:54:24,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:54:24,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:24" (1/1) ... [2019-11-26 02:54:24,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:24" (1/1) ... [2019-11-26 02:54:24,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:24" (1/1) ... [2019-11-26 02:54:24,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:24" (1/1) ... [2019-11-26 02:54:24,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:24" (1/1) ... [2019-11-26 02:54:24,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:24" (1/1) ... [2019-11-26 02:54:24,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:24" (1/1) ... [2019-11-26 02:54:24,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:54:24,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:54:24,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:54:24,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:54:24,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/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 [2019-11-26 02:54:25,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:54:25,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-26 02:54:25,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:54:25,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:54:25,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-26 02:54:25,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:54:25,360 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:54:25,360 INFO L284 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-26 02:54:25,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:54:25 BoogieIcfgContainer [2019-11-26 02:54:25,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:54:25,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:54:25,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:54:25,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:54:25,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:54:24" (1/3) ... [2019-11-26 02:54:25,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7408657e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:54:25, skipping insertion in model container [2019-11-26 02:54:25,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:24" (2/3) ... [2019-11-26 02:54:25,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7408657e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:54:25, skipping insertion in model container [2019-11-26 02:54:25,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:54:25" (3/3) ... [2019-11-26 02:54:25,370 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2019-11-26 02:54:25,384 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:54:25,389 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:54:25,398 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:54:25,419 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:54:25,419 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:54:25,419 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:54:25,419 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:54:25,419 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:54:25,420 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:54:25,420 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:54:25,420 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:54:25,432 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-11-26 02:54:25,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:54:25,438 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:54:25,439 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:54:25,439 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:54:25,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:54:25,445 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2019-11-26 02:54:25,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:54:25,455 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776172379] [2019-11-26 02:54:25,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/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 [2019-11-26 02:54:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:54:25,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-26 02:54:25,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:54:25,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:25,548 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:54:25,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:25,552 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776172379] [2019-11-26 02:54:25,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:54:25,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:54:25,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073432054] [2019-11-26 02:54:25,557 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:54:25,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:54:25,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:54:25,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:54:25,571 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-11-26 02:54:25,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:54:25,588 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2019-11-26 02:54:25,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:54:25,590 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-26 02:54:25,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:54:25,599 INFO L225 Difference]: With dead ends: 54 [2019-11-26 02:54:25,599 INFO L226 Difference]: Without dead ends: 25 [2019-11-26 02:54:25,602 INFO L630 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 [2019-11-26 02:54:25,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-26 02:54:25,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-26 02:54:25,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-26 02:54:25,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2019-11-26 02:54:25,633 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2019-11-26 02:54:25,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:54:25,633 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2019-11-26 02:54:25,633 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:54:25,633 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2019-11-26 02:54:25,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-26 02:54:25,634 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:54:25,634 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:54:25,847 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-26 02:54:25,847 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:54:25,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:54:25,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2019-11-26 02:54:25,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:54:25,849 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542518736] [2019-11-26 02:54:25,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/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 [2019-11-26 02:54:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:54:25,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:54:25,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:54:25,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:25,965 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:54:25,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:25,988 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542518736] [2019-11-26 02:54:25,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:54:25,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-26 02:54:25,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13139816] [2019-11-26 02:54:25,990 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:54:25,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:54:25,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:54:25,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:54:25,991 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 6 states. [2019-11-26 02:54:26,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:54:26,109 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2019-11-26 02:54:26,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:54:26,110 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-26 02:54:26,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:54:26,112 INFO L225 Difference]: With dead ends: 52 [2019-11-26 02:54:26,112 INFO L226 Difference]: Without dead ends: 47 [2019-11-26 02:54:26,113 INFO L630 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 [2019-11-26 02:54:26,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-26 02:54:26,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2019-11-26 02:54:26,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-26 02:54:26,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-11-26 02:54:26,119 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2019-11-26 02:54:26,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:54:26,122 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-11-26 02:54:26,123 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:54:26,126 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-11-26 02:54:26,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-26 02:54:26,127 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:54:26,127 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:54:26,340 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-26 02:54:26,340 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:54:26,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:54:26,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2019-11-26 02:54:26,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:54:26,341 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746532975] [2019-11-26 02:54:26,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/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 [2019-11-26 02:54:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:54:26,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-26 02:54:26,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:54:26,458 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:54:26,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:26,505 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:54:26,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:26,608 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1746532975] [2019-11-26 02:54:26,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:54:26,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-26 02:54:26,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77111170] [2019-11-26 02:54:26,609 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-26 02:54:26,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:54:26,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-26 02:54:26,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:54:26,610 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 10 states. [2019-11-26 02:54:26,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:54:26,892 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2019-11-26 02:54:26,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:54:26,893 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2019-11-26 02:54:26,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:54:26,894 INFO L225 Difference]: With dead ends: 36 [2019-11-26 02:54:26,894 INFO L226 Difference]: Without dead ends: 27 [2019-11-26 02:54:26,895 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-11-26 02:54:26,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-26 02:54:26,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2019-11-26 02:54:26,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-26 02:54:26,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2019-11-26 02:54:26,898 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2019-11-26 02:54:26,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:54:26,899 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2019-11-26 02:54:26,899 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-26 02:54:26,899 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2019-11-26 02:54:26,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-26 02:54:26,899 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:54:26,900 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:54:27,100 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-26 02:54:27,100 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:54:27,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:54:27,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2019-11-26 02:54:27,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:54:27,101 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358929970] [2019-11-26 02:54:27,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/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 [2019-11-26 02:54:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:54:27,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:54:27,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:54:27,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:27,190 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:54:27,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:27,217 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358929970] [2019-11-26 02:54:27,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:54:27,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-26 02:54:27,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103447021] [2019-11-26 02:54:27,218 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:54:27,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:54:27,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:54:27,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:54:27,219 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 6 states. [2019-11-26 02:54:27,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:54:27,325 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2019-11-26 02:54:27,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:54:27,326 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-26 02:54:27,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:54:27,326 INFO L225 Difference]: With dead ends: 52 [2019-11-26 02:54:27,327 INFO L226 Difference]: Without dead ends: 47 [2019-11-26 02:54:27,327 INFO L630 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 [2019-11-26 02:54:27,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-26 02:54:27,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2019-11-26 02:54:27,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-26 02:54:27,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2019-11-26 02:54:27,333 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2019-11-26 02:54:27,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:54:27,334 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2019-11-26 02:54:27,334 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:54:27,334 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2019-11-26 02:54:27,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-26 02:54:27,335 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:54:27,335 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:54:27,555 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-26 02:54:27,555 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:54:27,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:54:27,556 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2019-11-26 02:54:27,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:54:27,556 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587494329] [2019-11-26 02:54:27,556 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/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 [2019-11-26 02:54:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:54:27,628 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-26 02:54:27,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:54:27,690 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:54:27,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:27,730 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:54:27,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:27,833 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587494329] [2019-11-26 02:54:27,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:54:27,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2019-11-26 02:54:27,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733983196] [2019-11-26 02:54:27,834 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-26 02:54:27,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:54:27,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-26 02:54:27,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:54:27,835 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 12 states. [2019-11-26 02:54:28,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:54:28,165 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2019-11-26 02:54:28,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:54:28,165 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2019-11-26 02:54:28,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:54:28,166 INFO L225 Difference]: With dead ends: 32 [2019-11-26 02:54:28,166 INFO L226 Difference]: Without dead ends: 23 [2019-11-26 02:54:28,167 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2019-11-26 02:54:28,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-26 02:54:28,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-26 02:54:28,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-26 02:54:28,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-11-26 02:54:28,170 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2019-11-26 02:54:28,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:54:28,171 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-11-26 02:54:28,171 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-26 02:54:28,171 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-11-26 02:54:28,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-26 02:54:28,172 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:54:28,172 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:54:28,383 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-26 02:54:28,383 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:54:28,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:54:28,384 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2019-11-26 02:54:28,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:54:28,384 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579659708] [2019-11-26 02:54:28,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/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 [2019-11-26 02:54:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:54:28,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-26 02:54:28,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:54:28,521 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:54:28,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:28,562 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:54:28,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:28,632 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579659708] [2019-11-26 02:54:28,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:54:28,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-26 02:54:28,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682543626] [2019-11-26 02:54:28,633 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-26 02:54:28,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:54:28,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-26 02:54:28,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:54:28,633 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 10 states. [2019-11-26 02:54:28,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:54:28,806 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2019-11-26 02:54:28,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:54:28,806 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2019-11-26 02:54:28,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:54:28,807 INFO L225 Difference]: With dead ends: 23 [2019-11-26 02:54:28,807 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:54:28,807 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-11-26 02:54:28,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:54:28,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:54:28,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:54:28,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:54:28,808 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-11-26 02:54:28,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:54:28,809 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:54:28,809 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-26 02:54:28,809 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:54:28,809 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:54:29,009 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-26 02:54:29,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:54:29,316 INFO L444 ceAbstractionStarter]: For program point L64(lines 64 67) no Hoare annotation was computed. [2019-11-26 02:54:29,316 INFO L447 ceAbstractionStarter]: At program point L69(lines 56 70) the Hoare annotation is: true [2019-11-26 02:54:29,316 INFO L444 ceAbstractionStarter]: For program point L36(lines 36 39) no Hoare annotation was computed. [2019-11-26 02:54:29,316 INFO L444 ceAbstractionStarter]: For program point L36-1(lines 36 39) no Hoare annotation was computed. [2019-11-26 02:54:29,316 INFO L444 ceAbstractionStarter]: For program point L65(line 65) no Hoare annotation was computed. [2019-11-26 02:54:29,316 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-26 02:54:29,317 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:54:29,317 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-26 02:54:29,317 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 65) no Hoare annotation was computed. [2019-11-26 02:54:29,317 INFO L444 ceAbstractionStarter]: For program point L33(lines 33 39) no Hoare annotation was computed. [2019-11-26 02:54:29,317 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:54:29,317 INFO L444 ceAbstractionStarter]: For program point L33-1(lines 33 39) no Hoare annotation was computed. [2019-11-26 02:54:29,317 INFO L440 ceAbstractionStarter]: At program point L54(line 54) the Hoare annotation is: (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_fmax_float_~y (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmax_float_#res| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2019-11-26 02:54:29,317 INFO L444 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2019-11-26 02:54:29,317 INFO L444 ceAbstractionStarter]: For program point L50-2(line 50) no Hoare annotation was computed. [2019-11-26 02:54:29,318 INFO L440 ceAbstractionStarter]: At program point L50-3(lines 42 51) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_fmax_float_~y (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmax_float_#res| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2019-11-26 02:54:29,318 INFO L444 ceAbstractionStarter]: For program point L30(lines 30 39) no Hoare annotation was computed. [2019-11-26 02:54:29,318 INFO L444 ceAbstractionStarter]: For program point L30-1(lines 30 39) no Hoare annotation was computed. [2019-11-26 02:54:29,318 INFO L444 ceAbstractionStarter]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2019-11-26 02:54:29,318 INFO L440 ceAbstractionStarter]: At program point L22-2(lines 22 26) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x))) [2019-11-26 02:54:29,318 INFO L444 ceAbstractionStarter]: For program point L22-3(lines 19 40) no Hoare annotation was computed. [2019-11-26 02:54:29,318 INFO L444 ceAbstractionStarter]: For program point L22-5(lines 22 26) no Hoare annotation was computed. [2019-11-26 02:54:29,318 INFO L440 ceAbstractionStarter]: At program point L22-6(lines 22 26) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x))) [2019-11-26 02:54:29,318 INFO L444 ceAbstractionStarter]: For program point L22-7(lines 19 40) no Hoare annotation was computed. [2019-11-26 02:54:29,318 INFO L444 ceAbstractionStarter]: For program point L47(lines 47 49) no Hoare annotation was computed. [2019-11-26 02:54:29,318 INFO L444 ceAbstractionStarter]: For program point L43(lines 43 45) no Hoare annotation was computed. [2019-11-26 02:54:29,319 INFO L440 ceAbstractionStarter]: At program point L39(lines 19 40) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x))) [2019-11-26 02:54:29,319 INFO L440 ceAbstractionStarter]: At program point L39-1(lines 19 40) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)))) (or (and .cse0 (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|))) (and .cse0 (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x))))) [2019-11-26 02:54:29,322 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:54:29,322 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:54:29,328 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:54:29,328 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:54:29,330 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:54:29,330 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:54:29,330 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:54:29,330 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:54:29,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:54:29 BoogieIcfgContainer [2019-11-26 02:54:29,335 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:54:29,336 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:54:29,336 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:54:29,336 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:54:29,336 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:54:25" (3/4) ... [2019-11-26 02:54:29,339 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:54:29,349 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-26 02:54:29,349 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-26 02:54:29,350 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:54:29,370 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2019-11-26 02:54:29,371 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (1bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2019-11-26 02:54:29,371 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~FLOAT(y, y) && !(0bv32 == \result)) || (!~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x)) [2019-11-26 02:54:29,408 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_bd4958f4-22fc-4bec-9052-4833c410a465/bin/utaipan/witness.graphml [2019-11-26 02:54:29,408 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:54:29,410 INFO L168 Benchmark]: Toolchain (without parser) took 4770.29 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 960.4 MB in the beginning and 831.8 MB in the end (delta: 128.7 MB). Peak memory consumption was 229.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:29,411 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:54:29,411 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.62 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -143.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:29,412 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.26 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:29,412 INFO L168 Benchmark]: Boogie Preprocessor took 28.37 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:54:29,412 INFO L168 Benchmark]: RCFGBuilder took 370.33 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.6 MB). Peak memory consumption was 32.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:29,413 INFO L168 Benchmark]: TraceAbstraction took 3971.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 838.6 MB in the end (delta: 219.0 MB). Peak memory consumption was 219.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:29,413 INFO L168 Benchmark]: Witness Printer took 72.88 ms. Allocated memory is still 1.1 GB. Free memory was 838.6 MB in the beginning and 831.8 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:29,415 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 284.62 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -143.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.26 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.37 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 370.33 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.6 MB). Peak memory consumption was 32.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3971.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 838.6 MB in the end (delta: 219.0 MB). Peak memory consumption was 219.0 MB. Max. memory is 11.5 GB. * Witness Printer took 72.88 ms. Allocated memory is still 1.1 GB. Free memory was 838.6 MB in the beginning and 831.8 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.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] - 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: 65]: 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: 42]: Loop Invariant [2019-11-26 02:54:29,422 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:54:29,422 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:54:29,422 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:54:29,423 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 54]: Loop Invariant [2019-11-26 02:54:29,424 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:54:29,424 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:54:29,424 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:54:29,425 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (1bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (!~fp.eq~FLOAT(y, y) && !(0bv32 == \result)) || (!~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Result: SAFE, OverallTime: 3.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, HoareTripleCheckerStatistics: 182 SDtfs, 107 SDslu, 476 SDs, 0 SdLazy, 126 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 80 HoareAnnotationTreeSize, 7 FomulaSimplifications, 190 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 45 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 8512 SizeOfPredicates, 32 NumberOfNonLiveVariables, 285 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...