./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0730a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8c9e4c7f8995223bc7932e148ca032e092f66eb9 .................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8c9e4c7f8995223bc7932e148ca032e092f66eb9 ............................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 03:33:10,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 03:33:10,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 03:33:10,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 03:33:10,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 03:33:10,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 03:33:10,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 03:33:11,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 03:33:11,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 03:33:11,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 03:33:11,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 03:33:11,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 03:33:11,021 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 03:33:11,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 03:33:11,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 03:33:11,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 03:33:11,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 03:33:11,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 03:33:11,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 03:33:11,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 03:33:11,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 03:33:11,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 03:33:11,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 03:33:11,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 03:33:11,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 03:33:11,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 03:33:11,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 03:33:11,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 03:33:11,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 03:33:11,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 03:33:11,076 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 03:33:11,077 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 03:33:11,079 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 03:33:11,081 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 03:33:11,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 03:33:11,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 03:33:11,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 03:33:11,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 03:33:11,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 03:33:11,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 03:33:11,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 03:33:11,091 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 03:33:11,130 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 03:33:11,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 03:33:11,131 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 03:33:11,132 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 03:33:11,132 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 03:33:11,132 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 03:33:11,133 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 03:33:11,133 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 03:33:11,133 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 03:33:11,133 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 03:33:11,134 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 03:33:11,134 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 03:33:11,134 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 03:33:11,135 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 03:33:11,135 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 03:33:11,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 03:33:11,136 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 03:33:11,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 03:33:11,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 03:33:11,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 03:33:11,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 03:33:11,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 03:33:11,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 03:33:11,138 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 03:33:11,138 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 03:33:11,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 03:33:11,139 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 03:33:11,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 03:33:11,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 03:33:11,140 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 03:33:11,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 03:33:11,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 03:33:11,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 03:33:11,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 03:33:11,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 03:33:11,142 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 03:33:11,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 03:33:11,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 03:33:11,142 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 03:33:11,143 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 03:33:11,143 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c9e4c7f8995223bc7932e148ca032e092f66eb9 [2020-11-30 03:33:11,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 03:33:11,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 03:33:11,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 03:33:11,474 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 03:33:11,475 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 03:33:11,476 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0730a.c [2020-11-30 03:33:11,552 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/bin/utaipan/data/751e67b33/39cb2827f4b44321897b5ae21fec9b6b/FLAGccfb8bf76 [2020-11-30 03:33:12,122 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 03:33:12,124 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/sv-benchmarks/c/float-newlib/double_req_bl_0730a.c [2020-11-30 03:33:12,140 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/bin/utaipan/data/751e67b33/39cb2827f4b44321897b5ae21fec9b6b/FLAGccfb8bf76 [2020-11-30 03:33:12,461 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/bin/utaipan/data/751e67b33/39cb2827f4b44321897b5ae21fec9b6b [2020-11-30 03:33:12,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 03:33:12,465 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 03:33:12,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 03:33:12,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 03:33:12,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 03:33:12,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:33:12" (1/1) ... [2020-11-30 03:33:12,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b7f36ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:12, skipping insertion in model container [2020-11-30 03:33:12,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:33:12" (1/1) ... [2020-11-30 03:33:12,487 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 03:33:12,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 03:33:12,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:33:12,799 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 03:33:12,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:33:12,876 INFO L208 MainTranslator]: Completed translation [2020-11-30 03:33:12,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:12 WrapperNode [2020-11-30 03:33:12,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 03:33:12,881 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 03:33:12,882 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 03:33:12,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 03:33:12,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:12" (1/1) ... [2020-11-30 03:33:12,926 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:12" (1/1) ... [2020-11-30 03:33:12,963 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 03:33:12,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 03:33:12,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 03:33:12,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 03:33:12,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:12" (1/1) ... [2020-11-30 03:33:12,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:12" (1/1) ... [2020-11-30 03:33:12,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:12" (1/1) ... [2020-11-30 03:33:12,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:12" (1/1) ... [2020-11-30 03:33:12,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:12" (1/1) ... [2020-11-30 03:33:13,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:12" (1/1) ... [2020-11-30 03:33:13,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:12" (1/1) ... [2020-11-30 03:33:13,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 03:33:13,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 03:33:13,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 03:33:13,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 03:33:13,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 03:33:13,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 03:33:13,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 03:33:13,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-30 03:33:13,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 03:33:13,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 03:33:13,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 03:33:13,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 03:33:13,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 03:33:13,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 03:33:14,587 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 03:33:14,587 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-30 03:33:14,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:33:14 BoogieIcfgContainer [2020-11-30 03:33:14,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 03:33:14,591 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 03:33:14,591 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 03:33:14,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 03:33:14,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 03:33:12" (1/3) ... [2020-11-30 03:33:14,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c72c27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:33:14, skipping insertion in model container [2020-11-30 03:33:14,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:12" (2/3) ... [2020-11-30 03:33:14,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c72c27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:33:14, skipping insertion in model container [2020-11-30 03:33:14,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:33:14" (3/3) ... [2020-11-30 03:33:14,598 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730a.c [2020-11-30 03:33:14,610 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 03:33:14,614 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 03:33:14,626 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 03:33:14,650 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 03:33:14,651 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 03:33:14,651 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 03:33:14,651 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 03:33:14,651 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 03:33:14,651 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 03:33:14,652 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 03:33:14,652 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 03:33:14,665 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-11-30 03:33:14,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 03:33:14,670 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:33:14,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:33:14,671 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:33:14,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:33:14,677 INFO L82 PathProgramCache]: Analyzing trace with hash 167643478, now seen corresponding path program 1 times [2020-11-30 03:33:14,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:33:14,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353324023] [2020-11-30 03:33:14,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:33:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:33:14,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:33:14,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353324023] [2020-11-30 03:33:14,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:33:14,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 03:33:14,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266522084] [2020-11-30 03:33:14,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 03:33:14,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:33:14,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 03:33:14,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 03:33:14,841 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2020-11-30 03:33:14,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:33:14,863 INFO L93 Difference]: Finished difference Result 51 states and 81 transitions. [2020-11-30 03:33:14,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 03:33:14,864 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-30 03:33:14,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:33:14,871 INFO L225 Difference]: With dead ends: 51 [2020-11-30 03:33:14,871 INFO L226 Difference]: Without dead ends: 24 [2020-11-30 03:33:14,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 03:33:14,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-30 03:33:14,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-11-30 03:33:14,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-30 03:33:14,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2020-11-30 03:33:14,902 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 8 [2020-11-30 03:33:14,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:33:14,902 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2020-11-30 03:33:14,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 03:33:14,902 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2020-11-30 03:33:14,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 03:33:14,903 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:33:14,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:33:14,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 03:33:14,904 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:33:14,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:33:14,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1007242647, now seen corresponding path program 1 times [2020-11-30 03:33:14,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:33:14,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746882039] [2020-11-30 03:33:14,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:33:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 03:33:15,002 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 03:33:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 03:33:15,071 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 03:33:15,118 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 03:33:15,118 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 03:33:15,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 03:33:15,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 03:33:15 BoogieIcfgContainer [2020-11-30 03:33:15,166 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 03:33:15,168 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 03:33:15,168 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 03:33:15,168 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 03:33:15,169 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:33:14" (3/4) ... [2020-11-30 03:33:15,172 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 03:33:15,173 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 03:33:15,177 INFO L168 Benchmark]: Toolchain (without parser) took 2709.17 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 63.6 MB in the beginning and 65.0 MB in the end (delta: -1.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 16.1 GB. [2020-11-30 03:33:15,178 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory was 50.8 MB in the beginning and 50.7 MB in the end (delta: 70.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:33:15,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 410.01 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 63.2 MB in the beginning and 98.5 MB in the end (delta: -35.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 03:33:15,180 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.80 ms. Allocated memory is still 123.7 MB. Free memory was 98.5 MB in the beginning and 95.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 03:33:15,181 INFO L168 Benchmark]: Boogie Preprocessor took 46.14 ms. Allocated memory is still 123.7 MB. Free memory was 95.7 MB in the beginning and 94.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:33:15,182 INFO L168 Benchmark]: RCFGBuilder took 1578.14 ms. Allocated memory is still 123.7 MB. Free memory was 94.3 MB in the beginning and 92.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 62.9 MB. Max. memory is 16.1 GB. [2020-11-30 03:33:15,183 INFO L168 Benchmark]: TraceAbstraction took 575.30 ms. Allocated memory is still 123.7 MB. Free memory was 91.5 MB in the beginning and 65.0 MB in the end (delta: 26.5 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-30 03:33:15,184 INFO L168 Benchmark]: Witness Printer took 5.95 ms. Allocated memory is still 123.7 MB. Free memory is still 65.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:33:15,193 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory was 50.8 MB in the beginning and 50.7 MB in the end (delta: 70.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 410.01 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 63.2 MB in the beginning and 98.5 MB in the end (delta: -35.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.80 ms. Allocated memory is still 123.7 MB. Free memory was 98.5 MB in the beginning and 95.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.14 ms. Allocated memory is still 123.7 MB. Free memory was 95.7 MB in the beginning and 94.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1578.14 ms. Allocated memory is still 123.7 MB. Free memory was 94.3 MB in the beginning and 92.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 62.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 575.30 ms. Allocated memory is still 123.7 MB. Free memory was 91.5 MB in the beginning and 65.0 MB in the end (delta: 26.5 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Witness Printer took 5.95 ms. Allocated memory is still 123.7 MB. Free memory is still 65.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 144, overapproximation of someBinaryArithmeticDOUBLEoperation at line 38, overapproximation of bitwiseAnd at line 143. Possible FailurePath: [L22] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L157] double x = 1.0 / 0.0; [L25] double z; [L26] __int32_t sign = 0x80000000; [L27] __uint32_t r, t1, s1, ix1, q1; [L28] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (x) [L33] EXPR ew_u.parts.msw [L33] (ix0) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ix1) = ew_u.parts.lsw [L37] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L38] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L158] double res = __ieee754_sqrt(x); [L136] __int32_t hx, lx; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L138] ieee_double_shape_type ew_u; [L139] ew_u.value = (x) [L140] EXPR ew_u.parts.msw [L140] (hx) = ew_u.parts.msw [L141] EXPR ew_u.parts.lsw [L141] (lx) = ew_u.parts.lsw [L143] hx &= 0x7fffffff [L144] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L145] hx = 0x7ff00000 - hx [L146] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L161] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_0730a.c", 3, "reach_error") VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 34 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=26occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-30 03:33:17,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 03:33:17,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 03:33:17,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 03:33:17,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 03:33:17,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 03:33:17,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 03:33:17,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 03:33:17,802 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 03:33:17,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 03:33:17,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 03:33:17,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 03:33:17,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 03:33:17,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 03:33:17,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 03:33:17,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 03:33:17,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 03:33:17,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 03:33:17,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 03:33:17,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 03:33:17,818 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 03:33:17,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 03:33:17,820 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 03:33:17,821 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 03:33:17,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 03:33:17,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 03:33:17,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 03:33:17,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 03:33:17,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 03:33:17,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 03:33:17,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 03:33:17,830 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 03:33:17,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 03:33:17,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 03:33:17,833 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 03:33:17,833 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 03:33:17,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 03:33:17,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 03:33:17,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 03:33:17,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 03:33:17,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 03:33:17,837 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-30 03:33:17,862 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 03:33:17,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 03:33:17,864 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 03:33:17,864 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 03:33:17,864 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 03:33:17,864 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 03:33:17,865 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 03:33:17,865 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 03:33:17,865 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 03:33:17,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 03:33:17,866 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 03:33:17,866 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 03:33:17,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 03:33:17,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 03:33:17,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 03:33:17,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 03:33:17,868 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 03:33:17,868 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 03:33:17,868 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 03:33:17,868 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 03:33:17,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 03:33:17,869 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 03:33:17,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 03:33:17,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 03:33:17,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 03:33:17,870 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 03:33:17,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 03:33:17,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 03:33:17,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 03:33:17,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 03:33:17,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 03:33:17,871 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 03:33:17,871 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 03:33:17,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 03:33:17,872 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 03:33:17,872 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 03:33:17,872 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c9e4c7f8995223bc7932e148ca032e092f66eb9 [2020-11-30 03:33:18,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 03:33:18,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 03:33:18,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 03:33:18,268 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 03:33:18,269 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 03:33:18,270 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0730a.c [2020-11-30 03:33:18,348 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/bin/utaipan/data/9d7302c06/3709bc64adab48c5acc8665488bd9c95/FLAG87cd770e9 [2020-11-30 03:33:18,940 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 03:33:18,945 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/sv-benchmarks/c/float-newlib/double_req_bl_0730a.c [2020-11-30 03:33:18,954 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/bin/utaipan/data/9d7302c06/3709bc64adab48c5acc8665488bd9c95/FLAG87cd770e9 [2020-11-30 03:33:19,268 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/bin/utaipan/data/9d7302c06/3709bc64adab48c5acc8665488bd9c95 [2020-11-30 03:33:19,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 03:33:19,273 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 03:33:19,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 03:33:19,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 03:33:19,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 03:33:19,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:33:19" (1/1) ... [2020-11-30 03:33:19,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d4ae376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:19, skipping insertion in model container [2020-11-30 03:33:19,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:33:19" (1/1) ... [2020-11-30 03:33:19,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 03:33:19,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 03:33:19,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:33:19,576 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 03:33:19,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:33:19,693 INFO L208 MainTranslator]: Completed translation [2020-11-30 03:33:19,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:19 WrapperNode [2020-11-30 03:33:19,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 03:33:19,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 03:33:19,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 03:33:19,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 03:33:19,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:19" (1/1) ... [2020-11-30 03:33:19,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:19" (1/1) ... [2020-11-30 03:33:19,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 03:33:19,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 03:33:19,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 03:33:19,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 03:33:19,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:19" (1/1) ... [2020-11-30 03:33:19,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:19" (1/1) ... [2020-11-30 03:33:19,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:19" (1/1) ... [2020-11-30 03:33:19,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:19" (1/1) ... [2020-11-30 03:33:19,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:19" (1/1) ... [2020-11-30 03:33:19,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:19" (1/1) ... [2020-11-30 03:33:19,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:19" (1/1) ... [2020-11-30 03:33:19,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 03:33:19,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 03:33:19,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 03:33:19,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 03:33:19,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 03:33:19,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-30 03:33:19,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-30 03:33:19,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 03:33:19,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 03:33:19,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 03:33:19,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 03:33:19,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 03:33:19,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-30 03:33:19,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 03:33:23,812 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 03:33:23,813 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-30 03:33:23,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:33:23 BoogieIcfgContainer [2020-11-30 03:33:23,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 03:33:23,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 03:33:23,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 03:33:23,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 03:33:23,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 03:33:19" (1/3) ... [2020-11-30 03:33:23,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1101cfc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:33:23, skipping insertion in model container [2020-11-30 03:33:23,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:19" (2/3) ... [2020-11-30 03:33:23,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1101cfc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:33:23, skipping insertion in model container [2020-11-30 03:33:23,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:33:23" (3/3) ... [2020-11-30 03:33:23,824 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730a.c [2020-11-30 03:33:23,837 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 03:33:23,842 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 03:33:23,856 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 03:33:23,883 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 03:33:23,883 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 03:33:23,883 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 03:33:23,884 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 03:33:23,884 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 03:33:23,884 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 03:33:23,884 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 03:33:23,884 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 03:33:23,901 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-11-30 03:33:23,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 03:33:23,906 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:33:23,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:33:23,907 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:33:23,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:33:23,913 INFO L82 PathProgramCache]: Analyzing trace with hash -898135563, now seen corresponding path program 1 times [2020-11-30 03:33:23,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:33:23,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947345687] [2020-11-30 03:33:23,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-30 03:33:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:33:24,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 03:33:24,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:33:24,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:33:24,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:33:24,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:33:24,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947345687] [2020-11-30 03:33:24,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:33:24,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 03:33:24,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813889073] [2020-11-30 03:33:24,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 03:33:24,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:33:24,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 03:33:24,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 03:33:24,493 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2020-11-30 03:33:24,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:33:24,514 INFO L93 Difference]: Finished difference Result 103 states and 163 transitions. [2020-11-30 03:33:24,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 03:33:24,516 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-30 03:33:24,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:33:24,525 INFO L225 Difference]: With dead ends: 103 [2020-11-30 03:33:24,526 INFO L226 Difference]: Without dead ends: 49 [2020-11-30 03:33:24,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 03:33:24,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-30 03:33:24,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-11-30 03:33:24,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-30 03:33:24,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 68 transitions. [2020-11-30 03:33:24,585 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 68 transitions. Word has length 10 [2020-11-30 03:33:24,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:33:24,585 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 68 transitions. [2020-11-30 03:33:24,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 03:33:24,585 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 68 transitions. [2020-11-30 03:33:24,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 03:33:24,586 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:33:24,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:33:24,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 03:33:24,806 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:33:24,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:33:24,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1657561708, now seen corresponding path program 1 times [2020-11-30 03:33:24,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:33:24,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009393037] [2020-11-30 03:33:24,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-30 03:33:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 03:33:25,413 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 03:33:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 03:33:25,879 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 03:33:25,980 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-30 03:33:25,981 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 03:33:26,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 03:33:26,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 03:33:26 BoogieIcfgContainer [2020-11-30 03:33:26,231 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 03:33:26,232 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 03:33:26,232 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 03:33:26,232 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 03:33:26,233 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:33:23" (3/4) ... [2020-11-30 03:33:26,235 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 03:33:26,322 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_18ca4058-dc5a-45fe-a832-8c43e45878b7/bin/utaipan/witness.graphml [2020-11-30 03:33:26,328 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 03:33:26,330 INFO L168 Benchmark]: Toolchain (without parser) took 7056.45 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 35.8 MB in the beginning and 50.2 MB in the end (delta: -14.4 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2020-11-30 03:33:26,332 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 56.6 MB. Free memory was 39.3 MB in the beginning and 39.2 MB in the end (delta: 38.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:33:26,332 INFO L168 Benchmark]: CACSL2BoogieTranslator took 421.21 ms. Allocated memory is still 56.6 MB. Free memory was 35.6 MB in the beginning and 38.0 MB in the end (delta: -2.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 03:33:26,335 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.08 ms. Allocated memory is still 56.6 MB. Free memory was 38.0 MB in the beginning and 36.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:33:26,337 INFO L168 Benchmark]: Boogie Preprocessor took 64.92 ms. Allocated memory is still 56.6 MB. Free memory was 35.8 MB in the beginning and 33.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:33:26,339 INFO L168 Benchmark]: RCFGBuilder took 4002.81 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 33.8 MB in the beginning and 39.8 MB in the end (delta: -6.0 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. [2020-11-30 03:33:26,339 INFO L168 Benchmark]: TraceAbstraction took 2413.90 ms. Allocated memory is still 75.5 MB. Free memory was 39.1 MB in the beginning and 53.3 MB in the end (delta: -14.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2020-11-30 03:33:26,340 INFO L168 Benchmark]: Witness Printer took 96.52 ms. Allocated memory is still 75.5 MB. Free memory was 53.3 MB in the beginning and 50.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 03:33:26,343 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 56.6 MB. Free memory was 39.3 MB in the beginning and 39.2 MB in the end (delta: 38.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 421.21 ms. Allocated memory is still 56.6 MB. Free memory was 35.6 MB in the beginning and 38.0 MB in the end (delta: -2.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.08 ms. Allocated memory is still 56.6 MB. Free memory was 38.0 MB in the beginning and 36.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.92 ms. Allocated memory is still 56.6 MB. Free memory was 35.8 MB in the beginning and 33.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4002.81 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 33.8 MB in the beginning and 39.8 MB in the end (delta: -6.0 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2413.90 ms. Allocated memory is still 75.5 MB. Free memory was 39.1 MB in the beginning and 53.3 MB in the end (delta: -14.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. * Witness Printer took 96.52 ms. Allocated memory is still 75.5 MB. Free memory was 53.3 MB in the beginning and 50.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L22] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L157] double x = 1.0 / 0.0; [L25] double z; [L26] __int32_t sign = 0x80000000; [L27] __uint32_t r, t1, s1, ix1, q1; [L28] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (x) [L33] EXPR ew_u.parts.msw [L33] (ix0) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ix1) = ew_u.parts.lsw [L37] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L38] return x * x + x; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L158] double res = __ieee754_sqrt(x); [L136] __int32_t hx, lx; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L138] ieee_double_shape_type ew_u; [L139] ew_u.value = (x) [L140] EXPR ew_u.parts.msw [L140] (hx) = ew_u.parts.msw [L141] EXPR ew_u.parts.lsw [L141] (lx) = ew_u.parts.lsw [L143] hx &= 0x7fffffff [L144] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L145] hx = 0x7ff00000 - hx [L146] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L161] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_0730a.c", 3, "reach_error") VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 71 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred 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, 0.9s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 162 SizeOfPredicates, 0 NumberOfNonLiveVariables, 40 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...