./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1072d.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_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/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 965a8d1f86759d0c7cab56eb22958b9f714cfb2b ................................................................................................................................................................................................................................................................................................................... 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_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/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 965a8d1f86759d0c7cab56eb22958b9f714cfb2b ......................................................................................................................................................................................................................................................................................................................... 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 [2020-11-28 07:30:43,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:30:43,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:30:43,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:30:43,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:30:43,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:30:43,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:30:43,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:30:43,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:30:43,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:30:43,862 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:30:43,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:30:43,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:30:43,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:30:43,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:30:43,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:30:43,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:30:43,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:30:43,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:30:43,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:30:43,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:30:43,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:30:43,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:30:43,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:30:43,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:30:43,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:30:43,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:30:43,908 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:30:43,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:30:43,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:30:43,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:30:43,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:30:43,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:30:43,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:30:43,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:30:43,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:30:43,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:30:43,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:30:43,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:30:43,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:30:43,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:30:43,921 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:30:43,965 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:30:43,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:30:43,967 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:30:43,967 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:30:43,968 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:30:43,968 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:30:43,968 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:30:43,968 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:30:43,969 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:30:43,969 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:30:43,970 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:30:43,970 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:30:43,971 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:30:43,971 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:30:43,971 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:30:43,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:30:43,972 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:30:43,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:30:43,973 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:30:43,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:30:43,974 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:30:43,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:30:43,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:30:43,982 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:30:43,982 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:30:43,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:30:43,983 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:30:43,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:30:43,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:30:43,987 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:30:43,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:30:43,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:30:43,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:30:43,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:30:43,988 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:30:43,989 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:30:43,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:30:43,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:30:43,989 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:30:43,989 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:30:43,990 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_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 965a8d1f86759d0c7cab56eb22958b9f714cfb2b [2020-11-28 07:30:44,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:30:44,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:30:44,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:30:44,270 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:30:44,271 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:30:44,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2020-11-28 07:30:44,365 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/bin/utaipan/data/bd31ca516/7df5c026c9c741c0bf50edf2ba8b9529/FLAG05e45e75e [2020-11-28 07:30:44,914 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:30:44,919 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2020-11-28 07:30:44,931 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/bin/utaipan/data/bd31ca516/7df5c026c9c741c0bf50edf2ba8b9529/FLAG05e45e75e [2020-11-28 07:30:45,267 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/bin/utaipan/data/bd31ca516/7df5c026c9c741c0bf50edf2ba8b9529 [2020-11-28 07:30:45,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:30:45,270 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:30:45,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:30:45,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:30:45,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:30:45,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:30:45" (1/1) ... [2020-11-28 07:30:45,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25caca8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:45, skipping insertion in model container [2020-11-28 07:30:45,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:30:45" (1/1) ... [2020-11-28 07:30:45,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:30:45,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:30:45,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:30:45,530 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:30:45,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:30:45,576 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:30:45,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:45 WrapperNode [2020-11-28 07:30:45,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:30:45,578 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:30:45,578 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:30:45,578 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:30:45,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:45" (1/1) ... [2020-11-28 07:30:45,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:45" (1/1) ... [2020-11-28 07:30:45,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:30:45,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:30:45,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:30:45,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:30:45,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:45" (1/1) ... [2020-11-28 07:30:45,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:45" (1/1) ... [2020-11-28 07:30:45,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:45" (1/1) ... [2020-11-28 07:30:45,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:45" (1/1) ... [2020-11-28 07:30:45,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:45" (1/1) ... [2020-11-28 07:30:45,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:45" (1/1) ... [2020-11-28 07:30:45,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:45" (1/1) ... [2020-11-28 07:30:45,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:30:45,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:30:45,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:30:45,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:30:45,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/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 [2020-11-28 07:30:45,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:30:45,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:30:45,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-28 07:30:45,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:30:45,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 07:30:45,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:30:45,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:30:45,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:30:45,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:30:46,342 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:30:46,342 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-28 07:30:46,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:30:46 BoogieIcfgContainer [2020-11-28 07:30:46,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:30:46,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:30:46,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:30:46,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:30:46,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:30:45" (1/3) ... [2020-11-28 07:30:46,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a46fd6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:30:46, skipping insertion in model container [2020-11-28 07:30:46,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:45" (2/3) ... [2020-11-28 07:30:46,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a46fd6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:30:46, skipping insertion in model container [2020-11-28 07:30:46,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:30:46" (3/3) ... [2020-11-28 07:30:46,355 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072d.c [2020-11-28 07:30:46,366 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:30:46,371 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:30:46,380 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:30:46,399 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:30:46,400 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:30:46,400 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:30:46,400 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:30:46,400 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:30:46,400 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:30:46,400 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:30:46,400 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:30:46,417 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-11-28 07:30:46,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:30:46,425 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:46,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:46,426 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:46,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:46,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1971406064, now seen corresponding path program 1 times [2020-11-28 07:30:46,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:46,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986978099] [2020-11-28 07:30:46,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:46,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:46,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986978099] [2020-11-28 07:30:46,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:46,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:30:46,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710429655] [2020-11-28 07:30:46,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:30:46,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:46,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:30:46,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:30:46,629 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-11-28 07:30:46,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:46,650 INFO L93 Difference]: Finished difference Result 47 states and 75 transitions. [2020-11-28 07:30:46,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:30:46,652 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-28 07:30:46,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:46,671 INFO L225 Difference]: With dead ends: 47 [2020-11-28 07:30:46,672 INFO L226 Difference]: Without dead ends: 22 [2020-11-28 07:30:46,681 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 [2020-11-28 07:30:46,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-28 07:30:46,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-28 07:30:46,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-28 07:30:46,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-11-28 07:30:46,718 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 11 [2020-11-28 07:30:46,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:46,719 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-11-28 07:30:46,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:30:46,719 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-11-28 07:30:46,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:30:46,720 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:46,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:46,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:30:46,721 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:46,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:46,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1803644696, now seen corresponding path program 1 times [2020-11-28 07:30:46,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:46,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805174393] [2020-11-28 07:30:46,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:46,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:30:46,929 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:30:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:30:47,051 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:30:47,092 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:30:47,092 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:30:47,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:30:47,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:30:47 BoogieIcfgContainer [2020-11-28 07:30:47,137 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:30:47,137 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:30:47,138 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:30:47,138 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:30:47,139 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:30:46" (3/4) ... [2020-11-28 07:30:47,142 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 07:30:47,142 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:30:47,146 INFO L168 Benchmark]: Toolchain (without parser) took 1873.25 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 53.4 MB in the beginning and 66.4 MB in the end (delta: -13.0 MB). Peak memory consumption was 1.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:47,147 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 83.9 MB. Free memory is still 43.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:30:47,148 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.16 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 53.4 MB in the beginning and 77.0 MB in the end (delta: -23.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:47,149 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.51 ms. Allocated memory is still 100.7 MB. Free memory was 77.0 MB in the beginning and 74.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:47,150 INFO L168 Benchmark]: Boogie Preprocessor took 32.24 ms. Allocated memory is still 100.7 MB. Free memory was 74.9 MB in the beginning and 73.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:30:47,151 INFO L168 Benchmark]: RCFGBuilder took 691.92 ms. Allocated memory is still 100.7 MB. Free memory was 73.3 MB in the beginning and 48.4 MB in the end (delta: 24.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:47,152 INFO L168 Benchmark]: TraceAbstraction took 790.83 ms. Allocated memory is still 100.7 MB. Free memory was 48.1 MB in the beginning and 66.8 MB in the end (delta: -18.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:30:47,153 INFO L168 Benchmark]: Witness Printer took 5.24 ms. Allocated memory is still 100.7 MB. Free memory was 66.8 MB in the beginning and 66.4 MB in the end (delta: 372.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:30:47,162 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 83.9 MB. Free memory is still 43.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 293.16 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 53.4 MB in the beginning and 77.0 MB in the end (delta: -23.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.51 ms. Allocated memory is still 100.7 MB. Free memory was 77.0 MB in the beginning and 74.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.24 ms. Allocated memory is still 100.7 MB. Free memory was 74.9 MB in the beginning and 73.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 691.92 ms. Allocated memory is still 100.7 MB. Free memory was 73.3 MB in the beginning and 48.4 MB in the end (delta: 24.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 790.83 ms. Allocated memory is still 100.7 MB. Free memory was 48.1 MB in the beginning and 66.8 MB in the end (delta: -18.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.24 ms. Allocated memory is still 100.7 MB. Free memory was 66.8 MB in the beginning and 66.4 MB in the end (delta: 372.7 kB). 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 74, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of bitwiseAnd at line 73. Possible FailurePath: [L86] double x = -1.0 / 0.0; [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L32] COND FALSE !(exponent_less_1023 < 20) [L49] COND TRUE exponent_less_1023 > 51 [L50] COND TRUE exponent_less_1023 == 1024 [L51] return x + x; [L87] double res = trunc_double(x); [L66] __int32_t hx, lx; [L68] ieee_double_shape_type ew_u; [L69] ew_u.value = (x) [L70] EXPR ew_u.parts.msw [L70] (hx) = ew_u.parts.msw [L71] EXPR ew_u.parts.lsw [L71] (lx) = ew_u.parts.lsw [L73] hx &= 0x7fffffff [L74] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L75] hx = 0x7ff00000 - hx [L76] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1072d.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 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=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 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 [2020-11-28 07:30:49,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:30:49,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:30:49,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:30:49,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:30:49,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:30:49,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:30:49,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:30:49,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:30:49,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:30:49,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:30:49,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:30:49,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:30:49,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:30:49,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:30:49,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:30:49,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:30:49,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:30:49,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:30:49,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:30:49,849 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:30:49,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:30:49,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:30:49,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:30:49,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:30:49,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:30:49,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:30:49,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:30:49,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:30:49,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:30:49,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:30:49,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:30:49,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:30:49,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:30:49,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:30:49,875 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:30:49,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:30:49,876 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:30:49,876 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:30:49,877 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:30:49,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:30:49,878 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-28 07:30:49,921 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:30:49,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:30:49,923 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:30:49,923 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:30:49,923 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:30:49,923 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:30:49,924 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:30:49,924 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:30:49,924 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:30:49,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:30:49,926 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:30:49,927 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:30:49,927 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:30:49,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:30:49,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:30:49,927 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:30:49,928 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:30:49,928 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:30:49,928 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:30:49,928 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:30:49,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:30:49,929 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:30:49,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:30:49,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:30:49,929 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:30:49,930 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:30:49,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:30:49,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:30:49,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:30:49,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:30:49,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:30:49,931 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:30:49,932 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:30:49,932 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:30:49,932 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:30:49,932 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:30:49,933 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_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 965a8d1f86759d0c7cab56eb22958b9f714cfb2b [2020-11-28 07:30:50,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:30:50,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:30:50,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:30:50,364 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:30:50,365 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:30:50,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2020-11-28 07:30:50,444 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/bin/utaipan/data/213812935/edf4a2fa23104df39478c7ee54df600b/FLAGad5a62de0 [2020-11-28 07:30:51,110 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:30:51,110 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2020-11-28 07:30:51,118 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/bin/utaipan/data/213812935/edf4a2fa23104df39478c7ee54df600b/FLAGad5a62de0 [2020-11-28 07:30:51,514 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/bin/utaipan/data/213812935/edf4a2fa23104df39478c7ee54df600b [2020-11-28 07:30:51,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:30:51,521 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:30:51,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:30:51,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:30:51,528 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:30:51,529 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:30:51" (1/1) ... [2020-11-28 07:30:51,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a47df3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:51, skipping insertion in model container [2020-11-28 07:30:51,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:30:51" (1/1) ... [2020-11-28 07:30:51,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:30:51,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:30:51,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:30:51,862 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:30:51,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:30:51,979 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:30:51,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:51 WrapperNode [2020-11-28 07:30:51,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:30:51,981 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:30:51,982 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:30:51,982 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:30:51,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:51" (1/1) ... [2020-11-28 07:30:52,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:51" (1/1) ... [2020-11-28 07:30:52,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:30:52,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:30:52,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:30:52,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:30:52,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:51" (1/1) ... [2020-11-28 07:30:52,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:51" (1/1) ... [2020-11-28 07:30:52,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:51" (1/1) ... [2020-11-28 07:30:52,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:51" (1/1) ... [2020-11-28 07:30:52,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:51" (1/1) ... [2020-11-28 07:30:52,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:51" (1/1) ... [2020-11-28 07:30:52,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:51" (1/1) ... [2020-11-28 07:30:52,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:30:52,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:30:52,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:30:52,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:30:52,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/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 [2020-11-28 07:30:52,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-28 07:30:52,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-28 07:30:52,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 07:30:52,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:30:52,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 07:30:52,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:30:52,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:30:52,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 07:30:52,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:30:52,961 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:30:52,962 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-28 07:30:52,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:30:52 BoogieIcfgContainer [2020-11-28 07:30:52,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:30:52,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:30:52,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:30:52,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:30:52,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:30:51" (1/3) ... [2020-11-28 07:30:52,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b3cbec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:30:52, skipping insertion in model container [2020-11-28 07:30:52,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:51" (2/3) ... [2020-11-28 07:30:52,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b3cbec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:30:52, skipping insertion in model container [2020-11-28 07:30:52,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:30:52" (3/3) ... [2020-11-28 07:30:52,976 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072d.c [2020-11-28 07:30:52,990 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:30:52,995 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:30:53,009 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:30:53,036 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:30:53,037 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:30:53,037 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:30:53,037 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:30:53,037 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:30:53,038 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:30:53,038 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:30:53,038 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:30:53,053 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-11-28 07:30:53,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:30:53,059 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:53,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:53,060 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:53,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:53,067 INFO L82 PathProgramCache]: Analyzing trace with hash 748040733, now seen corresponding path program 1 times [2020-11-28 07:30:53,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:30:53,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883877369] [2020-11-28 07:30:53,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/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 [2020-11-28 07:30:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:53,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 07:30:53,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:30:53,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:53,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:30:53,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:53,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [883877369] [2020-11-28 07:30:53,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:53,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 07:30:53,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340590395] [2020-11-28 07:30:53,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:30:53,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:30:53,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:30:53,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:30:53,387 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-11-28 07:30:53,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:53,418 INFO L93 Difference]: Finished difference Result 53 states and 81 transitions. [2020-11-28 07:30:53,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:30:53,420 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-28 07:30:53,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:53,430 INFO L225 Difference]: With dead ends: 53 [2020-11-28 07:30:53,430 INFO L226 Difference]: Without dead ends: 24 [2020-11-28 07:30:53,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:30:53,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-28 07:30:53,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-11-28 07:30:53,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-28 07:30:53,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-11-28 07:30:53,474 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2020-11-28 07:30:53,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:53,474 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-11-28 07:30:53,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:30:53,475 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-11-28 07:30:53,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 07:30:53,476 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:53,476 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:53,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:30:53,701 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:53,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:53,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1214246053, now seen corresponding path program 1 times [2020-11-28 07:30:53,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:30:53,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482368216] [2020-11-28 07:30:53,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/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 [2020-11-28 07:30:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:30:54,047 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:30:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:30:54,277 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:30:54,370 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-28 07:30:54,371 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:30:54,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 07:30:54,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:30:54 BoogieIcfgContainer [2020-11-28 07:30:54,617 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:30:54,617 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:30:54,617 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:30:54,618 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:30:54,619 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:30:52" (3/4) ... [2020-11-28 07:30:54,622 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:30:54,710 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1000a7a6-8889-4f8c-b4b8-a0f3c6583842/bin/utaipan/witness.graphml [2020-11-28 07:30:54,720 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:30:54,722 INFO L168 Benchmark]: Toolchain (without parser) took 3199.79 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 35.2 MB in the beginning and 42.7 MB in the end (delta: -7.5 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:54,724 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 56.6 MB. Free memory was 38.7 MB in the beginning and 38.7 MB in the end (delta: 73.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:30:54,727 INFO L168 Benchmark]: CACSL2BoogieTranslator took 456.62 ms. Allocated memory is still 56.6 MB. Free memory was 35.1 MB in the beginning and 38.6 MB in the end (delta: -3.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:54,728 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.03 ms. Allocated memory is still 56.6 MB. Free memory was 38.6 MB in the beginning and 36.7 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:30:54,729 INFO L168 Benchmark]: Boogie Preprocessor took 54.55 ms. Allocated memory is still 56.6 MB. Free memory was 36.7 MB in the beginning and 34.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:54,733 INFO L168 Benchmark]: RCFGBuilder took 870.73 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 34.9 MB in the beginning and 43.6 MB in the end (delta: -8.7 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:54,734 INFO L168 Benchmark]: TraceAbstraction took 1650.08 ms. Allocated memory is still 71.3 MB. Free memory was 43.3 MB in the beginning and 45.3 MB in the end (delta: -2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:30:54,735 INFO L168 Benchmark]: Witness Printer took 102.87 ms. Allocated memory is still 71.3 MB. Free memory was 45.3 MB in the beginning and 43.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:54,742 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 56.6 MB. Free memory was 38.7 MB in the beginning and 38.7 MB in the end (delta: 73.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 456.62 ms. Allocated memory is still 56.6 MB. Free memory was 35.1 MB in the beginning and 38.6 MB in the end (delta: -3.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.03 ms. Allocated memory is still 56.6 MB. Free memory was 38.6 MB in the beginning and 36.7 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.55 ms. Allocated memory is still 56.6 MB. Free memory was 36.7 MB in the beginning and 34.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 870.73 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 34.9 MB in the beginning and 43.6 MB in the end (delta: -8.7 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1650.08 ms. Allocated memory is still 71.3 MB. Free memory was 43.3 MB in the beginning and 45.3 MB in the end (delta: -2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 102.87 ms. Allocated memory is still 71.3 MB. Free memory was 45.3 MB in the beginning and 43.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 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: [L86] double x = -1.0 / 0.0; [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L32] COND FALSE !(exponent_less_1023 < 20) [L49] COND TRUE exponent_less_1023 > 51 [L50] COND TRUE exponent_less_1023 == 1024 [L51] return x + x; [L87] double res = trunc_double(x); [L66] __int32_t hx, lx; [L68] ieee_double_shape_type ew_u; [L69] ew_u.value = (x) [L70] EXPR ew_u.parts.msw [L70] (hx) = ew_u.parts.msw [L71] EXPR ew_u.parts.lsw [L71] (lx) = ew_u.parts.lsw [L73] hx &= 0x7fffffff [L74] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L75] hx = 0x7ff00000 - hx [L76] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1072d.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 41 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...