./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-to-double2.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_a7798f14-2b04-4fb9-a5d0-f489eeb8df17/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a7798f14-2b04-4fb9-a5d0-f489eeb8df17/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a7798f14-2b04-4fb9-a5d0-f489eeb8df17/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a7798f14-2b04-4fb9-a5d0-f489eeb8df17/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a7798f14-2b04-4fb9-a5d0-f489eeb8df17/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a7798f14-2b04-4fb9-a5d0-f489eeb8df17/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 bb25cff741a4983d608d95bf512bab62b5988d3b .............................................................................................................................................................................................................................................. 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_a7798f14-2b04-4fb9-a5d0-f489eeb8df17/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a7798f14-2b04-4fb9-a5d0-f489eeb8df17/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a7798f14-2b04-4fb9-a5d0-f489eeb8df17/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a7798f14-2b04-4fb9-a5d0-f489eeb8df17/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a7798f14-2b04-4fb9-a5d0-f489eeb8df17/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a7798f14-2b04-4fb9-a5d0-f489eeb8df17/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 bb25cff741a4983d608d95bf512bab62b5988d3b .............................................................................................................................................................................................................................................................................................................. 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 07:35:26,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:35:26,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:35:26,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:35:26,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:35:26,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:35:26,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:35:26,917 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:35:26,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:35:26,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:35:26,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:35:26,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:35:26,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:35:26,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:35:26,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:35:26,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:35:26,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:35:26,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:35:26,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:35:26,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:35:26,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:35:26,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:35:26,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:35:26,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:35:26,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:35:26,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:35:26,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:35:26,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:35:26,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:35:26,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:35:26,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:35:26,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:35:26,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:35:26,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:35:26,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:35:26,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:35:26,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:35:26,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:35:26,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:35:26,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:35:26,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:35:26,967 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a7798f14-2b04-4fb9-a5d0-f489eeb8df17/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:35:26,994 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:35:26,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:35:26,995 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:35:26,995 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:35:26,996 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:35:26,996 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:35:26,996 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:35:26,996 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:35:26,997 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:35:26,997 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:35:26,997 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:35:26,997 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:35:26,998 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:35:26,998 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:35:26,998 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:35:26,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:35:26,999 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:35:27,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:35:27,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:35:27,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:35:27,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:35:27,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:35:27,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:35:27,001 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:35:27,002 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:35:27,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:35:27,002 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:35:27,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:35:27,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:35:27,003 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:35:27,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:35:27,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:35:27,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:35:27,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:35:27,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:35:27,005 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:35:27,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:35:27,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:35:27,005 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:35:27,006 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:35:27,006 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_a7798f14-2b04-4fb9-a5d0-f489eeb8df17/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a7798f14-2b04-4fb9-a5d0-f489eeb8df17/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb25cff741a4983d608d95bf512bab62b5988d3b [2020-11-28 07:35:27,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:35:27,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:35:27,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:35:27,333 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:35:27,334 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:35:27,335 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a7798f14-2b04-4fb9-a5d0-f489eeb8df17/bin/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c [2020-11-28 07:35:27,416 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a7798f14-2b04-4fb9-a5d0-f489eeb8df17/bin/utaipan/data/ae0c034cf/8ddc3f4ed3a54e459c7499126c46db35/FLAG41809081b [2020-11-28 07:35:27,942 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:35:27,943 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a7798f14-2b04-4fb9-a5d0-f489eeb8df17/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c [2020-11-28 07:35:27,956 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a7798f14-2b04-4fb9-a5d0-f489eeb8df17/bin/utaipan/data/ae0c034cf/8ddc3f4ed3a54e459c7499126c46db35/FLAG41809081b [2020-11-28 07:35:28,327 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a7798f14-2b04-4fb9-a5d0-f489eeb8df17/bin/utaipan/data/ae0c034cf/8ddc3f4ed3a54e459c7499126c46db35 [2020-11-28 07:35:28,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:35:28,331 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:35:28,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:35:28,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:35:28,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:35:28,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:35:28" (1/1) ... [2020-11-28 07:35:28,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@658cd01f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:28, skipping insertion in model container [2020-11-28 07:35:28,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:35:28" (1/1) ... [2020-11-28 07:35:28,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:35:28,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:35:28,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:35:28,630 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:35:28,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:35:28,694 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:35:28,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:28 WrapperNode [2020-11-28 07:35:28,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:35:28,702 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:35:28,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:35:28,703 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:35:28,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:28" (1/1) ... [2020-11-28 07:35:28,723 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:28" (1/1) ... [2020-11-28 07:35:28,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:35:28,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:35:28,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:35:28,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:35:28,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:28" (1/1) ... [2020-11-28 07:35:28,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:28" (1/1) ... [2020-11-28 07:35:28,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:28" (1/1) ... [2020-11-28 07:35:28,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:28" (1/1) ... [2020-11-28 07:35:28,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:28" (1/1) ... [2020-11-28 07:35:28,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:28" (1/1) ... [2020-11-28 07:35:28,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:28" (1/1) ... [2020-11-28 07:35:28,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:35:28,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:35:28,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:35:28,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:35:28,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7798f14-2b04-4fb9-a5d0-f489eeb8df17/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 07:35:28,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:35:28,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:35:28,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:35:28,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:35:29,110 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:35:29,110 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 07:35:29,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:35:29 BoogieIcfgContainer [2020-11-28 07:35:29,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:35:29,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:35:29,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:35:29,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:35:29,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:35:28" (1/3) ... [2020-11-28 07:35:29,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16815486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:35:29, skipping insertion in model container [2020-11-28 07:35:29,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:28" (2/3) ... [2020-11-28 07:35:29,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16815486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:35:29, skipping insertion in model container [2020-11-28 07:35:29,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:35:29" (3/3) ... [2020-11-28 07:35:29,139 INFO L111 eAbstractionObserver]: Analyzing ICFG float-to-double2.c [2020-11-28 07:35:29,157 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:35:29,161 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:35:29,175 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:35:29,214 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:35:29,215 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:35:29,215 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:35:29,215 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:35:29,215 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:35:29,215 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:35:29,216 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:35:29,216 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:35:29,236 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2020-11-28 07:35:29,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-28 07:35:29,243 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:35:29,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-28 07:35:29,244 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:35:29,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:35:29,252 INFO L82 PathProgramCache]: Analyzing trace with hash 46289, now seen corresponding path program 1 times [2020-11-28 07:35:29,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:35:29,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80563808] [2020-11-28 07:35:29,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:35:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:35:29,375 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:35:29,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:35:29,397 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:35:29,431 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:35:29,434 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:35:29,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:35:29,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:35:29 BoogieIcfgContainer [2020-11-28 07:35:29,465 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:35:29,468 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:35:29,469 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:35:29,469 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:35:29,470 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:35:29" (3/4) ... [2020-11-28 07:35:29,474 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 07:35:29,475 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:35:29,480 INFO L168 Benchmark]: Toolchain (without parser) took 1144.31 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 65.4 MB in the beginning and 97.4 MB in the end (delta: -32.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:35:29,482 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 96.5 MB. Free memory is still 53.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:35:29,485 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.42 ms. Allocated memory is still 96.5 MB. Free memory was 65.2 MB in the beginning and 72.3 MB in the end (delta: -7.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:35:29,486 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.68 ms. Allocated memory is still 96.5 MB. Free memory was 72.3 MB in the beginning and 70.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:35:29,488 INFO L168 Benchmark]: Boogie Preprocessor took 31.92 ms. Allocated memory is still 96.5 MB. Free memory was 70.9 MB in the beginning and 69.9 MB in the end (delta: 955.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:35:29,489 INFO L168 Benchmark]: RCFGBuilder took 327.52 ms. Allocated memory is still 96.5 MB. Free memory was 69.9 MB in the beginning and 58.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:35:29,491 INFO L168 Benchmark]: TraceAbstraction took 350.28 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 58.0 MB in the beginning and 97.8 MB in the end (delta: -39.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:35:29,493 INFO L168 Benchmark]: Witness Printer took 6.58 ms. Allocated memory is still 121.6 MB. Free memory was 97.7 MB in the beginning and 97.4 MB in the end (delta: 321.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:35:29,508 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 96.5 MB. Free memory is still 53.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 365.42 ms. Allocated memory is still 96.5 MB. Free memory was 65.2 MB in the beginning and 72.3 MB in the end (delta: -7.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.68 ms. Allocated memory is still 96.5 MB. Free memory was 72.3 MB in the beginning and 70.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.92 ms. Allocated memory is still 96.5 MB. Free memory was 70.9 MB in the beginning and 69.9 MB in the end (delta: 955.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 327.52 ms. Allocated memory is still 96.5 MB. Free memory was 69.9 MB in the beginning and 58.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 350.28 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 58.0 MB in the beginning and 97.8 MB in the end (delta: -39.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * Witness Printer took 6.58 ms. Allocated memory is still 121.6 MB. Free memory was 97.7 MB in the beginning and 97.4 MB in the end (delta: 321.5 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 someBinaryDOUBLEComparisonOperation at line 11, overapproximation of someUnaryDOUBLEoperation at line 8, overapproximation of someUnaryFLOAToperation at line 7. Possible FailurePath: [L7] float f = -0x1.0p-127f; [L8] double d = -0x1.0p-127; [L9] double fp = (double)f; [L11] COND TRUE !(d == fp) [L3] __assert_fail("0", "float-to-double2.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 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=6occurred 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, 3 NumberOfCodeBlocks, 3 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 07:35:32,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:35:32,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:35:32,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:35:32,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:35:32,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:35:32,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:35:32,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:35:32,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:35:32,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:35:32,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:35:32,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:35:32,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:35:32,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:35:32,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:35:32,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:35:32,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:35:32,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:35:32,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:35:32,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:35:32,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:35:32,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:35:32,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:35:32,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:35:32,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:35:32,613 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:35:32,613 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:35:32,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:35:32,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:35:32,617 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:35:32,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:35:32,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:35:32,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:35:32,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:35:32,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:35:32,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:35:32,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:35:32,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:35:32,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:35:32,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:35:32,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:35:32,630 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a7798f14-2b04-4fb9-a5d0-f489eeb8df17/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-28 07:35:32,663 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:35:32,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:35:32,664 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:35:32,665 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:35:32,665 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:35:32,665 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:35:32,666 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:35:32,666 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:35:32,666 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:35:32,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:35:32,668 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:35:32,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:35:32,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:35:32,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:35:32,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:35:32,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:35:32,670 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:35:32,670 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:35:32,670 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:35:32,670 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:35:32,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:35:32,671 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:35:32,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:35:32,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:35:32,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:35:32,672 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:35:32,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:35:32,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:35:32,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:35:32,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:35:32,674 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:35:32,674 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:35:32,675 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:35:32,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:35:32,675 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:35:32,676 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:35:32,676 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_a7798f14-2b04-4fb9-a5d0-f489eeb8df17/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a7798f14-2b04-4fb9-a5d0-f489eeb8df17/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb25cff741a4983d608d95bf512bab62b5988d3b [2020-11-28 07:35:33,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:35:33,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:35:33,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:35:33,203 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:35:33,204 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:35:33,205 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a7798f14-2b04-4fb9-a5d0-f489eeb8df17/bin/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c [2020-11-28 07:35:33,292 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a7798f14-2b04-4fb9-a5d0-f489eeb8df17/bin/utaipan/data/1aa618d1d/189838bac6714524bf5167a70305f9ef/FLAG48ba17116 [2020-11-28 07:35:33,883 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:35:33,884 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a7798f14-2b04-4fb9-a5d0-f489eeb8df17/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c [2020-11-28 07:35:33,890 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a7798f14-2b04-4fb9-a5d0-f489eeb8df17/bin/utaipan/data/1aa618d1d/189838bac6714524bf5167a70305f9ef/FLAG48ba17116 [2020-11-28 07:35:34,238 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a7798f14-2b04-4fb9-a5d0-f489eeb8df17/bin/utaipan/data/1aa618d1d/189838bac6714524bf5167a70305f9ef [2020-11-28 07:35:34,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:35:34,244 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:35:34,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:35:34,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:35:34,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:35:34,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:35:34" (1/1) ... [2020-11-28 07:35:34,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ab4b46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:34, skipping insertion in model container [2020-11-28 07:35:34,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:35:34" (1/1) ... [2020-11-28 07:35:34,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:35:34,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:35:34,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:35:34,531 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:35:34,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:35:34,606 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:35:34,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:34 WrapperNode [2020-11-28 07:35:34,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:35:34,609 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:35:34,609 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:35:34,609 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:35:34,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:34" (1/1) ... [2020-11-28 07:35:34,627 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:34" (1/1) ... [2020-11-28 07:35:34,644 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:35:34,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:35:34,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:35:34,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:35:34,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:34" (1/1) ... [2020-11-28 07:35:34,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:34" (1/1) ... [2020-11-28 07:35:34,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:34" (1/1) ... [2020-11-28 07:35:34,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:34" (1/1) ... [2020-11-28 07:35:34,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:34" (1/1) ... [2020-11-28 07:35:34,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:34" (1/1) ... [2020-11-28 07:35:34,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:34" (1/1) ... [2020-11-28 07:35:34,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:35:34,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:35:34,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:35:34,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:35:34,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7798f14-2b04-4fb9-a5d0-f489eeb8df17/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 07:35:34,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:35:34,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:35:34,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 07:35:34,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:35:35,267 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:35:35,267 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 07:35:35,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:35:35 BoogieIcfgContainer [2020-11-28 07:35:35,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:35:35,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:35:35,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:35:35,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:35:35,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:35:34" (1/3) ... [2020-11-28 07:35:35,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d12db05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:35:35, skipping insertion in model container [2020-11-28 07:35:35,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:34" (2/3) ... [2020-11-28 07:35:35,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d12db05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:35:35, skipping insertion in model container [2020-11-28 07:35:35,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:35:35" (3/3) ... [2020-11-28 07:35:35,279 INFO L111 eAbstractionObserver]: Analyzing ICFG float-to-double2.c [2020-11-28 07:35:35,299 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:35:35,304 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:35:35,318 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:35:35,359 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:35:35,359 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:35:35,360 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:35:35,361 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:35:35,361 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:35:35,361 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:35:35,361 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:35:35,362 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:35:35,377 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-11-28 07:35:35,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 07:35:35,385 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:35:35,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 07:35:35,386 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:35:35,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:35:35,393 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-11-28 07:35:35,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:35:35,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937110002] [2020-11-28 07:35:35,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7798f14-2b04-4fb9-a5d0-f489eeb8df17/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 07:35:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:35:35,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 07:35:35,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:35:35,661 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 07:35:35,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:35:35,699 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 07:35:35,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937110002] [2020-11-28 07:35:35,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:35:35,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:35:35,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330831141] [2020-11-28 07:35:35,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:35:35,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:35:35,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:35:35,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:35:35,731 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2020-11-28 07:35:35,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:35:35,784 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-11-28 07:35:35,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:35:35,791 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-11-28 07:35:35,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:35:35,799 INFO L225 Difference]: With dead ends: 14 [2020-11-28 07:35:35,800 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:35:35,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:35:35,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:35:35,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:35:35,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:35:35,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:35:35,837 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2020-11-28 07:35:35,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:35:35,838 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:35:35,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:35:35,839 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:35:35,839 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:35:36,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:35:36,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:35:36,099 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:35:36,099 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 07:35:36,099 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:35:36,099 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 07:35:36,100 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 07:35:36,100 INFO L270 CegarLoopResult]: At program point L13(lines 5 14) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (and (= ULTIMATE.start_main_~d~0 (fp.neg ((_ to_fp 11 53) currentRoundingMode (/ 1.0 170141183460469231731687303715884105728.0)))) (= ULTIMATE.start_main_~fp~0 ((_ to_fp 11 53) currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode (/ 1.0 170141183460469231731687303715884105728.0))))))) [2020-11-28 07:35:36,101 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-11-28 07:35:36,101 INFO L274 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-11-28 07:35:36,101 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-28 07:35:36,101 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-28 07:35:36,107 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:35:36,108 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:35:36,108 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:35:36,115 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:35:36,115 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:35:36,115 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:35:36,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:35:36 BoogieIcfgContainer [2020-11-28 07:35:36,119 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:35:36,119 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:35:36,120 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:35:36,120 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:35:36,120 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:35:35" (3/4) ... [2020-11-28 07:35:36,124 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:35:36,133 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 07:35:36,136 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 07:35:36,137 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:35:36,138 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:35:36,172 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: d == ~fp.neg~DOUBLE(~to_fp~LONGDOUBLE(currentRoundingMode, 1/170141183460469231731687303715884105728)) && fp == ~to_fp~LONGDOUBLE(currentRoundingMode, ~fp.neg~DOUBLE(~to_fp~LONGDOUBLE(currentRoundingMode, 1/170141183460469231731687303715884105728)))) [2020-11-28 07:35:36,190 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a7798f14-2b04-4fb9-a5d0-f489eeb8df17/bin/utaipan/witness.graphml [2020-11-28 07:35:36,190 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:35:36,199 INFO L168 Benchmark]: Toolchain (without parser) took 1947.91 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 43.0 MB in the beginning and 46.3 MB in the end (delta: -3.3 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:35:36,200 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 62.9 MB. Free memory is still 45.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:35:36,201 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.04 ms. Allocated memory is still 62.9 MB. Free memory was 42.9 MB in the beginning and 45.7 MB in the end (delta: -2.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:35:36,202 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.77 ms. Allocated memory is still 62.9 MB. Free memory was 45.7 MB in the beginning and 44.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:35:36,204 INFO L168 Benchmark]: Boogie Preprocessor took 26.13 ms. Allocated memory is still 62.9 MB. Free memory was 44.2 MB in the beginning and 43.2 MB in the end (delta: 957.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:35:36,205 INFO L168 Benchmark]: RCFGBuilder took 597.51 ms. Allocated memory is still 62.9 MB. Free memory was 43.2 MB in the beginning and 33.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:35:36,209 INFO L168 Benchmark]: TraceAbstraction took 847.28 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 32.6 MB in the beginning and 48.5 MB in the end (delta: -15.9 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:35:36,210 INFO L168 Benchmark]: Witness Printer took 71.35 ms. Allocated memory is still 79.7 MB. Free memory was 48.5 MB in the beginning and 46.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:35:36,217 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 62.9 MB. Free memory is still 45.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 362.04 ms. Allocated memory is still 62.9 MB. Free memory was 42.9 MB in the beginning and 45.7 MB in the end (delta: -2.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.77 ms. Allocated memory is still 62.9 MB. Free memory was 45.7 MB in the beginning and 44.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.13 ms. Allocated memory is still 62.9 MB. Free memory was 44.2 MB in the beginning and 43.2 MB in the end (delta: 957.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 597.51 ms. Allocated memory is still 62.9 MB. Free memory was 43.2 MB in the beginning and 33.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 847.28 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 32.6 MB in the beginning and 48.5 MB in the end (delta: -15.9 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. * Witness Printer took 71.35 ms. Allocated memory is still 79.7 MB. Free memory was 48.5 MB in the beginning and 46.3 MB in the end (delta: 2.2 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 Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant [2020-11-28 07:35:36,237 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:35:36,237 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:35:36,237 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:35:36,239 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:35:36,239 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:35:36,239 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: d == ~fp.neg~DOUBLE(~to_fp~LONGDOUBLE(currentRoundingMode, 1/170141183460469231731687303715884105728)) && fp == ~to_fp~LONGDOUBLE(currentRoundingMode, ~fp.neg~DOUBLE(~to_fp~LONGDOUBLE(currentRoundingMode, 1/170141183460469231731687303715884105728)))) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 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, 4 SDslu, 2 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 16 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 1 QuantifiedInterpolants, 69 SizeOfPredicates, 5 NumberOfNonLiveVariables, 27 ConjunctsInSsa, 4 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...