./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i --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_14a5b3b4-9e74-4be3-b6c0-2932b150c2af/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_14a5b3b4-9e74-4be3-b6c0-2932b150c2af/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_14a5b3b4-9e74-4be3-b6c0-2932b150c2af/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_14a5b3b4-9e74-4be3-b6c0-2932b150c2af/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_14a5b3b4-9e74-4be3-b6c0-2932b150c2af/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_14a5b3b4-9e74-4be3-b6c0-2932b150c2af/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 debea56186ef4ab268c0be4274b8e0822edc1b01 ................................................................................................................................................................................................................................................... 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_14a5b3b4-9e74-4be3-b6c0-2932b150c2af/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_14a5b3b4-9e74-4be3-b6c0-2932b150c2af/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_14a5b3b4-9e74-4be3-b6c0-2932b150c2af/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_14a5b3b4-9e74-4be3-b6c0-2932b150c2af/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_14a5b3b4-9e74-4be3-b6c0-2932b150c2af/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_14a5b3b4-9e74-4be3-b6c0-2932b150c2af/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 debea56186ef4ab268c0be4274b8e0822edc1b01 ............................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:31:52,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:31:52,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:31:52,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:31:52,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:31:52,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:31:52,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:31:52,824 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:31:52,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:31:52,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:31:52,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:31:52,834 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:31:52,835 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:31:52,836 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:31:52,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:31:52,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:31:52,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:31:52,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:31:52,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:31:52,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:31:52,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:31:52,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:31:52,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:31:52,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:31:52,872 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:31:52,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:31:52,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:31:52,875 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:31:52,876 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:31:52,877 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:31:52,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:31:52,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:31:52,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:31:52,881 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:31:52,883 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:31:52,883 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:31:52,884 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:31:52,884 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:31:52,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:31:52,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:31:52,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:31:52,888 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_14a5b3b4-9e74-4be3-b6c0-2932b150c2af/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:31:52,930 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:31:52,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:31:52,932 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:31:52,932 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:31:52,932 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:31:52,933 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:31:52,933 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:31:52,933 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:31:52,933 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:31:52,933 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:31:52,934 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:31:52,935 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:31:52,935 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:31:52,935 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:31:52,935 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:31:52,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:31:52,936 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:31:52,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:31:52,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:31:52,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:31:52,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:31:52,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:31:52,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:31:52,938 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:31:52,938 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:31:52,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:31:52,938 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:31:52,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:31:52,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:31:52,940 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:31:52,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:31:52,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:31:52,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:31:52,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:31:52,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:31:52,942 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:31:52,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:31:52,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:31:52,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:31:52,943 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:31:52,943 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_14a5b3b4-9e74-4be3-b6c0-2932b150c2af/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_14a5b3b4-9e74-4be3-b6c0-2932b150c2af/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> debea56186ef4ab268c0be4274b8e0822edc1b01 [2020-11-28 07:31:53,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:31:53,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:31:53,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:31:53,356 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:31:53,360 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:31:53,361 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_14a5b3b4-9e74-4be3-b6c0-2932b150c2af/bin/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2020-11-28 07:31:53,445 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_14a5b3b4-9e74-4be3-b6c0-2932b150c2af/bin/utaipan/data/698977268/83f4abff129540b5aed9b1d8328fa66b/FLAG85c3957ff [2020-11-28 07:31:53,981 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:31:53,981 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_14a5b3b4-9e74-4be3-b6c0-2932b150c2af/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2020-11-28 07:31:53,987 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_14a5b3b4-9e74-4be3-b6c0-2932b150c2af/bin/utaipan/data/698977268/83f4abff129540b5aed9b1d8328fa66b/FLAG85c3957ff [2020-11-28 07:31:54,318 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_14a5b3b4-9e74-4be3-b6c0-2932b150c2af/bin/utaipan/data/698977268/83f4abff129540b5aed9b1d8328fa66b [2020-11-28 07:31:54,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:31:54,322 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:31:54,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:31:54,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:31:54,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:31:54,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:31:54" (1/1) ... [2020-11-28 07:31:54,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e278c75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:54, skipping insertion in model container [2020-11-28 07:31:54,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:31:54" (1/1) ... [2020-11-28 07:31:54,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:31:54,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:31:54,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:31:54,610 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:31:54,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:31:54,663 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:31:54,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:54 WrapperNode [2020-11-28 07:31:54,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:31:54,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:31:54,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:31:54,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:31:54,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:54" (1/1) ... [2020-11-28 07:31:54,683 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:54" (1/1) ... [2020-11-28 07:31:54,704 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:31:54,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:31:54,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:31:54,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:31:54,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:54" (1/1) ... [2020-11-28 07:31:54,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:54" (1/1) ... [2020-11-28 07:31:54,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:54" (1/1) ... [2020-11-28 07:31:54,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:54" (1/1) ... [2020-11-28 07:31:54,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:54" (1/1) ... [2020-11-28 07:31:54,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:54" (1/1) ... [2020-11-28 07:31:54,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:54" (1/1) ... [2020-11-28 07:31:54,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:31:54,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:31:54,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:31:54,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:31:54,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14a5b3b4-9e74-4be3-b6c0-2932b150c2af/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 07:31:54,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:31:54,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:31:54,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 07:31:54,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:31:54,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:31:54,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:31:54,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:31:55,177 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:31:55,178 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-28 07:31:55,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:31:55 BoogieIcfgContainer [2020-11-28 07:31:55,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:31:55,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:31:55,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:31:55,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:31:55,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:31:54" (1/3) ... [2020-11-28 07:31:55,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@304f37b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:31:55, skipping insertion in model container [2020-11-28 07:31:55,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:54" (2/3) ... [2020-11-28 07:31:55,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@304f37b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:31:55, skipping insertion in model container [2020-11-28 07:31:55,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:31:55" (3/3) ... [2020-11-28 07:31:55,194 INFO L111 eAbstractionObserver]: Analyzing ICFG float-zero-sum1.i [2020-11-28 07:31:55,208 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:31:55,213 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:31:55,231 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:31:55,288 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:31:55,291 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:31:55,291 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:31:55,291 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:31:55,292 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:31:55,292 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:31:55,292 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:31:55,292 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:31:55,309 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2020-11-28 07:31:55,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 07:31:55,315 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:31:55,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 07:31:55,316 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:31:55,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:31:55,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1643631, now seen corresponding path program 1 times [2020-11-28 07:31:55,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:31:55,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583354955] [2020-11-28 07:31:55,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:31:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:31:55,489 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:31:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:31:55,512 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:31:55,531 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:31:55,532 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:31:55,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:31:55,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:31:55 BoogieIcfgContainer [2020-11-28 07:31:55,564 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:31:55,566 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:31:55,566 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:31:55,566 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:31:55,567 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:31:55" (3/4) ... [2020-11-28 07:31:55,571 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 07:31:55,571 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:31:55,575 INFO L168 Benchmark]: Toolchain (without parser) took 1250.80 ms. Allocated memory was 90.2 MB in the beginning and 130.0 MB in the end (delta: 39.8 MB). Free memory was 57.1 MB in the beginning and 76.0 MB in the end (delta: -19.0 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:31:55,577 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 90.2 MB. Free memory was 66.2 MB in the beginning and 66.2 MB in the end (delta: 30.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:31:55,579 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.72 ms. Allocated memory was 90.2 MB in the beginning and 130.0 MB in the end (delta: 39.8 MB). Free memory was 56.8 MB in the beginning and 106.1 MB in the end (delta: -49.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:31:55,579 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.09 ms. Allocated memory is still 130.0 MB. Free memory was 106.1 MB in the beginning and 104.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:31:55,580 INFO L168 Benchmark]: Boogie Preprocessor took 25.71 ms. Allocated memory is still 130.0 MB. Free memory was 104.7 MB in the beginning and 104.0 MB in the end (delta: 687.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:31:55,581 INFO L168 Benchmark]: RCFGBuilder took 448.92 ms. Allocated memory is still 130.0 MB. Free memory was 104.0 MB in the beginning and 89.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:31:55,582 INFO L168 Benchmark]: TraceAbstraction took 381.82 ms. Allocated memory is still 130.0 MB. Free memory was 88.6 MB in the beginning and 76.8 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:31:55,583 INFO L168 Benchmark]: Witness Printer took 5.74 ms. Allocated memory is still 130.0 MB. Free memory was 76.8 MB in the beginning and 76.0 MB in the end (delta: 716.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:31:55,592 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 90.2 MB. Free memory was 66.2 MB in the beginning and 66.2 MB in the end (delta: 30.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 332.72 ms. Allocated memory was 90.2 MB in the beginning and 130.0 MB in the end (delta: 39.8 MB). Free memory was 56.8 MB in the beginning and 106.1 MB in the end (delta: -49.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.09 ms. Allocated memory is still 130.0 MB. Free memory was 106.1 MB in the beginning and 104.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.71 ms. Allocated memory is still 130.0 MB. Free memory was 104.7 MB in the beginning and 104.0 MB in the end (delta: 687.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 448.92 ms. Allocated memory is still 130.0 MB. Free memory was 104.0 MB in the beginning and 89.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 381.82 ms. Allocated memory is still 130.0 MB. Free memory was 88.6 MB in the beginning and 76.8 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 5.74 ms. Allocated memory is still 130.0 MB. Free memory was 76.8 MB in the beginning and 76.0 MB in the end (delta: 716.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 111, overapproximation of someUnaryDOUBLEoperation at line 122. Possible FailurePath: [L111] float sum = a + b; [L112] union mix m; [L113] m.f = sum [L114] EXPR m.i [L114] COND TRUE !(m.i != 0x80000000) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "float-zero-sum1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 07:31:58,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:31:58,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:31:58,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:31:58,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:31:58,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:31:58,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:31:58,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:31:58,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:31:58,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:31:58,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:31:58,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:31:58,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:31:58,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:31:58,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:31:58,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:31:58,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:31:58,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:31:58,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:31:58,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:31:58,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:31:58,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:31:58,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:31:58,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:31:58,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:31:58,119 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:31:58,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:31:58,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:31:58,121 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:31:58,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:31:58,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:31:58,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:31:58,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:31:58,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:31:58,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:31:58,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:31:58,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:31:58,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:31:58,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:31:58,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:31:58,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:31:58,134 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_14a5b3b4-9e74-4be3-b6c0-2932b150c2af/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-28 07:31:58,160 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:31:58,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:31:58,161 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:31:58,161 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:31:58,161 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:31:58,161 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:31:58,162 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:31:58,162 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:31:58,162 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:31:58,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:31:58,166 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:31:58,167 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:31:58,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:31:58,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:31:58,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:31:58,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:31:58,168 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:31:58,168 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:31:58,168 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:31:58,168 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:31:58,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:31:58,169 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:31:58,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:31:58,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:31:58,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:31:58,170 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:31:58,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:31:58,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:31:58,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:31:58,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:31:58,171 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:31:58,172 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:31:58,172 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:31:58,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:31:58,182 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:31:58,182 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:31:58,182 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_14a5b3b4-9e74-4be3-b6c0-2932b150c2af/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_14a5b3b4-9e74-4be3-b6c0-2932b150c2af/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> debea56186ef4ab268c0be4274b8e0822edc1b01 [2020-11-28 07:31:58,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:31:58,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:31:58,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:31:58,655 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:31:58,657 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:31:58,661 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_14a5b3b4-9e74-4be3-b6c0-2932b150c2af/bin/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2020-11-28 07:31:58,743 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_14a5b3b4-9e74-4be3-b6c0-2932b150c2af/bin/utaipan/data/48c39bad8/1b3567e7ab8a430098801df80d0ae1e4/FLAG91a3a40df [2020-11-28 07:31:59,293 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:31:59,294 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_14a5b3b4-9e74-4be3-b6c0-2932b150c2af/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2020-11-28 07:31:59,300 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_14a5b3b4-9e74-4be3-b6c0-2932b150c2af/bin/utaipan/data/48c39bad8/1b3567e7ab8a430098801df80d0ae1e4/FLAG91a3a40df [2020-11-28 07:31:59,651 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_14a5b3b4-9e74-4be3-b6c0-2932b150c2af/bin/utaipan/data/48c39bad8/1b3567e7ab8a430098801df80d0ae1e4 [2020-11-28 07:31:59,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:31:59,655 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:31:59,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:31:59,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:31:59,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:31:59,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:31:59" (1/1) ... [2020-11-28 07:31:59,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d7559b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:59, skipping insertion in model container [2020-11-28 07:31:59,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:31:59" (1/1) ... [2020-11-28 07:31:59,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:31:59,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:31:59,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:31:59,850 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:31:59,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:31:59,889 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:31:59,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:59 WrapperNode [2020-11-28 07:31:59,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:31:59,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:31:59,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:31:59,891 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:31:59,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:59" (1/1) ... [2020-11-28 07:31:59,944 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:59" (1/1) ... [2020-11-28 07:31:59,966 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:31:59,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:31:59,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:31:59,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:31:59,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:59" (1/1) ... [2020-11-28 07:31:59,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:59" (1/1) ... [2020-11-28 07:31:59,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:59" (1/1) ... [2020-11-28 07:31:59,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:59" (1/1) ... [2020-11-28 07:31:59,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:59" (1/1) ... [2020-11-28 07:31:59,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:59" (1/1) ... [2020-11-28 07:31:59,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:59" (1/1) ... [2020-11-28 07:32:00,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:32:00,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:32:00,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:32:00,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:32:00,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14a5b3b4-9e74-4be3-b6c0-2932b150c2af/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 07:32:00,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 07:32:00,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:32:00,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 07:32:00,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:32:00,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:32:00,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-28 07:32:00,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:32:00,575 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:32:00,575 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-28 07:32:00,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:32:00 BoogieIcfgContainer [2020-11-28 07:32:00,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:32:00,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:32:00,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:32:00,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:32:00,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:31:59" (1/3) ... [2020-11-28 07:32:00,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227dda8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:32:00, skipping insertion in model container [2020-11-28 07:32:00,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:59" (2/3) ... [2020-11-28 07:32:00,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227dda8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:32:00, skipping insertion in model container [2020-11-28 07:32:00,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:32:00" (3/3) ... [2020-11-28 07:32:00,589 INFO L111 eAbstractionObserver]: Analyzing ICFG float-zero-sum1.i [2020-11-28 07:32:00,599 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:32:00,603 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:32:00,615 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:32:00,651 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:32:00,651 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:32:00,651 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:32:00,651 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:32:00,652 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:32:00,652 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:32:00,652 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:32:00,652 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:32:00,665 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-11-28 07:32:00,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:32:00,670 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:32:00,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:32:00,671 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:32:00,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:32:00,678 INFO L82 PathProgramCache]: Analyzing trace with hash 28693859, now seen corresponding path program 1 times [2020-11-28 07:32:00,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:32:00,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [571924048] [2020-11-28 07:32:00,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14a5b3b4-9e74-4be3-b6c0-2932b150c2af/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 07:32:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:32:00,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 07:32:00,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:32:00,880 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 07:32:00,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:32:00,961 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 07:32:00,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [571924048] [2020-11-28 07:32:00,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:32:00,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-28 07:32:00,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049813412] [2020-11-28 07:32:00,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:32:00,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:32:00,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:32:00,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:32:00,982 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 6 states. [2020-11-28 07:32:01,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:32:01,069 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-11-28 07:32:01,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:32:01,073 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2020-11-28 07:32:01,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:32:01,079 INFO L225 Difference]: With dead ends: 17 [2020-11-28 07:32:01,080 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:32:01,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:32:01,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:32:01,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:32:01,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:32:01,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:32:01,105 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2020-11-28 07:32:01,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:32:01,106 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:32:01,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:32:01,106 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:32:01,106 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:32:01,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:32:01,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:32:01,341 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:32:01,341 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 07:32:01,341 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:32:01,341 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 07:32:01,342 INFO L270 CegarLoopResult]: At program point L123(lines 119 124) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2020-11-28 07:32:01,342 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:32:01,342 INFO L270 CegarLoopResult]: At program point L116(lines 110 117) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2020-11-28 07:32:01,342 INFO L274 CegarLoopResult]: For program point L114(line 114) no Hoare annotation was computed. [2020-11-28 07:32:01,342 INFO L274 CegarLoopResult]: For program point L114-2(line 114) no Hoare annotation was computed. [2020-11-28 07:32:01,342 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-28 07:32:01,343 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-28 07:32:01,343 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-28 07:32:01,351 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:32:01,354 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 07:32:01,356 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:32:01,356 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 07:32:01,357 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:32:01,357 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 07:32:01,363 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:32:01,363 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 07:32:01,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:32:01 BoogieIcfgContainer [2020-11-28 07:32:01,365 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:32:01,366 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:32:01,366 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:32:01,366 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:32:01,366 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:32:00" (3/4) ... [2020-11-28 07:32:01,374 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:32:01,387 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-28 07:32:01,388 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-28 07:32:01,388 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:32:01,388 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:32:01,443 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_14a5b3b4-9e74-4be3-b6c0-2932b150c2af/bin/utaipan/witness.graphml [2020-11-28 07:32:01,448 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:32:01,450 INFO L168 Benchmark]: Toolchain (without parser) took 1793.52 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 45.5 MB in the beginning and 61.4 MB in the end (delta: -15.9 MB). Peak memory consumption was 292.8 kB. Max. memory is 16.1 GB. [2020-11-28 07:32:01,451 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 65.0 MB. Free memory is still 46.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:32:01,452 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.45 ms. Allocated memory is still 65.0 MB. Free memory was 45.3 MB in the beginning and 34.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:32:01,453 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.95 ms. Allocated memory is still 65.0 MB. Free memory was 34.8 MB in the beginning and 47.7 MB in the end (delta: -12.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:32:01,454 INFO L168 Benchmark]: Boogie Preprocessor took 40.52 ms. Allocated memory is still 65.0 MB. Free memory was 47.7 MB in the beginning and 46.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:32:01,455 INFO L168 Benchmark]: RCFGBuilder took 568.89 ms. Allocated memory is still 65.0 MB. Free memory was 46.4 MB in the beginning and 34.8 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:32:01,458 INFO L168 Benchmark]: TraceAbstraction took 783.80 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 34.3 MB in the beginning and 64.0 MB in the end (delta: -29.7 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:32:01,459 INFO L168 Benchmark]: Witness Printer took 82.25 ms. Allocated memory is still 81.8 MB. Free memory was 64.0 MB in the beginning and 61.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:32:01,465 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 65.0 MB. Free memory is still 46.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 233.45 ms. Allocated memory is still 65.0 MB. Free memory was 45.3 MB in the beginning and 34.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 75.95 ms. Allocated memory is still 65.0 MB. Free memory was 34.8 MB in the beginning and 47.7 MB in the end (delta: -12.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.52 ms. Allocated memory is still 65.0 MB. Free memory was 47.7 MB in the beginning and 46.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 568.89 ms. Allocated memory is still 65.0 MB. Free memory was 46.4 MB in the beginning and 34.8 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 783.80 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 34.3 MB in the beginning and 64.0 MB in the end (delta: -29.7 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * Witness Printer took 82.25 ms. Allocated memory is still 81.8 MB. Free memory was 64.0 MB in the beginning and 61.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 119]: Loop Invariant [2020-11-28 07:32:01,476 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:32:01,477 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 07:32:01,478 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:32:01,478 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 110]: Loop Invariant [2020-11-28 07:32:01,479 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:32:01,479 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 07:32:01,481 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:32:01,481 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 SDtfs, 5 SDslu, 10 SDs, 0 SdLazy, 4 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 6 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 212 SizeOfPredicates, 10 NumberOfNonLiveVariables, 35 ConjunctsInSsa, 10 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 correct! Received shutdown request...