./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1051.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_9a736187-68a8-4d56-b4e5-9ae83c51efaa/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9a736187-68a8-4d56-b4e5-9ae83c51efaa/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9a736187-68a8-4d56-b4e5-9ae83c51efaa/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9a736187-68a8-4d56-b4e5-9ae83c51efaa/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9a736187-68a8-4d56-b4e5-9ae83c51efaa/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9a736187-68a8-4d56-b4e5-9ae83c51efaa/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 9192ebbb056e27a8831cb8246a8c32082898b28d ......................................................................................................................................................................................................................................................................................................... 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_9a736187-68a8-4d56-b4e5-9ae83c51efaa/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9a736187-68a8-4d56-b4e5-9ae83c51efaa/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9a736187-68a8-4d56-b4e5-9ae83c51efaa/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9a736187-68a8-4d56-b4e5-9ae83c51efaa/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9a736187-68a8-4d56-b4e5-9ae83c51efaa/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9a736187-68a8-4d56-b4e5-9ae83c51efaa/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 9192ebbb056e27a8831cb8246a8c32082898b28d ....................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:58:48,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:58:48,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:58:48,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:58:48,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:58:48,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:58:48,823 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:58:48,828 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:58:48,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:58:48,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:58:48,843 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:58:48,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:58:48,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:58:48,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:58:48,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:58:48,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:58:48,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:58:48,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:58:48,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:58:48,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:58:48,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:58:48,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:58:48,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:58:48,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:58:48,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:58:48,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:58:48,887 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:58:48,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:58:48,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:58:48,891 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:58:48,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:58:48,893 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:58:48,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:58:48,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:58:48,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:58:48,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:58:48,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:58:48,900 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:58:48,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:58:48,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:58:48,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:58:48,905 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9a736187-68a8-4d56-b4e5-9ae83c51efaa/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 01:58:48,948 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:58:48,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:58:48,950 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:58:48,950 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:58:48,950 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:58:48,951 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:58:48,951 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 01:58:48,951 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:58:48,951 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:58:48,952 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 01:58:48,953 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 01:58:48,953 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:58:48,954 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 01:58:48,954 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 01:58:48,954 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 01:58:48,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:58:48,955 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:58:48,956 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:58:48,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:58:48,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:58:48,956 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:58:48,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:58:48,957 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:58:48,957 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:58:48,957 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:58:48,957 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:58:48,958 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:58:48,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:58:48,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:58:48,959 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:58:48,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:58:48,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:58:48,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:58:48,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:58:48,960 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:58:48,960 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 01:58:48,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:58:48,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:58:48,961 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:58:48,961 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:58:48,962 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_9a736187-68a8-4d56-b4e5-9ae83c51efaa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9a736187-68a8-4d56-b4e5-9ae83c51efaa/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9192ebbb056e27a8831cb8246a8c32082898b28d [2020-11-30 01:58:49,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:58:49,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:58:49,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:58:49,312 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:58:49,313 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:58:49,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9a736187-68a8-4d56-b4e5-9ae83c51efaa/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c [2020-11-30 01:58:49,415 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9a736187-68a8-4d56-b4e5-9ae83c51efaa/bin/utaipan/data/4e292605c/ad1d898a0046493786d60c25e9bc2c51/FLAG60e78e399 [2020-11-30 01:58:49,846 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:58:49,847 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9a736187-68a8-4d56-b4e5-9ae83c51efaa/sv-benchmarks/c/float-newlib/float_req_bl_1051.c [2020-11-30 01:58:49,856 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9a736187-68a8-4d56-b4e5-9ae83c51efaa/bin/utaipan/data/4e292605c/ad1d898a0046493786d60c25e9bc2c51/FLAG60e78e399 [2020-11-30 01:58:50,218 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9a736187-68a8-4d56-b4e5-9ae83c51efaa/bin/utaipan/data/4e292605c/ad1d898a0046493786d60c25e9bc2c51 [2020-11-30 01:58:50,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:58:50,222 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:58:50,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:58:50,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:58:50,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:58:50,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:58:50" (1/1) ... [2020-11-30 01:58:50,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ed411bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:50, skipping insertion in model container [2020-11-30 01:58:50,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:58:50" (1/1) ... [2020-11-30 01:58:50,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:58:50,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:58:50,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:58:50,487 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:58:50,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:58:50,563 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:58:50,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:50 WrapperNode [2020-11-30 01:58:50,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:58:50,567 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:58:50,567 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:58:50,567 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:58:50,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:50" (1/1) ... [2020-11-30 01:58:50,583 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:50" (1/1) ... [2020-11-30 01:58:50,604 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:58:50,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:58:50,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:58:50,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:58:50,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:50" (1/1) ... [2020-11-30 01:58:50,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:50" (1/1) ... [2020-11-30 01:58:50,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:50" (1/1) ... [2020-11-30 01:58:50,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:50" (1/1) ... [2020-11-30 01:58:50,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:50" (1/1) ... [2020-11-30 01:58:50,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:50" (1/1) ... [2020-11-30 01:58:50,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:50" (1/1) ... [2020-11-30 01:58:50,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:58:50,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:58:50,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:58:50,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:58:50,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9a736187-68a8-4d56-b4e5-9ae83c51efaa/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:58:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:58:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:58:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-30 01:58:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 01:58:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 01:58:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:58:50,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:58:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 01:58:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:58:51,410 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:58:51,410 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-30 01:58:51,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:58:51 BoogieIcfgContainer [2020-11-30 01:58:51,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:58:51,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:58:51,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:58:51,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:58:51,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:58:50" (1/3) ... [2020-11-30 01:58:51,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f14f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:58:51, skipping insertion in model container [2020-11-30 01:58:51,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:50" (2/3) ... [2020-11-30 01:58:51,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f14f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:58:51, skipping insertion in model container [2020-11-30 01:58:51,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:58:51" (3/3) ... [2020-11-30 01:58:51,423 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1051.c [2020-11-30 01:58:51,435 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:58:51,439 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:58:51,450 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:58:51,473 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:58:51,474 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:58:51,474 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:58:51,474 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:58:51,474 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:58:51,475 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:58:51,475 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:58:51,475 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:58:51,485 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-30 01:58:51,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 01:58:51,491 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:58:51,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:58:51,492 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:58:51,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:58:51,497 INFO L82 PathProgramCache]: Analyzing trace with hash 545747666, now seen corresponding path program 1 times [2020-11-30 01:58:51,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:58:51,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257282630] [2020-11-30 01:58:51,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:58:51,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:58:51,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:58:51,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257282630] [2020-11-30 01:58:51,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:58:51,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:58:51,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492202048] [2020-11-30 01:58:51,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:58:51,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:58:51,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:58:51,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:58:51,661 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-11-30 01:58:51,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:58:51,676 INFO L93 Difference]: Finished difference Result 31 states and 45 transitions. [2020-11-30 01:58:51,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:58:51,677 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-30 01:58:51,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:58:51,685 INFO L225 Difference]: With dead ends: 31 [2020-11-30 01:58:51,686 INFO L226 Difference]: Without dead ends: 14 [2020-11-30 01:58:51,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:58:51,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-30 01:58:51,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-30 01:58:51,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-30 01:58:51,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-11-30 01:58:51,721 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2020-11-30 01:58:51,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:58:51,721 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-11-30 01:58:51,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:58:51,722 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-11-30 01:58:51,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 01:58:51,722 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:58:51,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:58:51,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:58:51,723 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:58:51,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:58:51,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1884371007, now seen corresponding path program 1 times [2020-11-30 01:58:51,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:58:51,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545269509] [2020-11-30 01:58:51,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:58:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:58:51,793 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:58:51,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:58:51,866 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:58:51,890 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 01:58:51,891 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:58:51,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:58:51,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:58:51 BoogieIcfgContainer [2020-11-30 01:58:51,919 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:58:51,919 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:58:51,920 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:58:51,920 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:58:51,921 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:58:51" (3/4) ... [2020-11-30 01:58:51,923 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:58:51,923 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:58:51,927 INFO L168 Benchmark]: Toolchain (without parser) took 1702.90 ms. Allocated memory is still 111.1 MB. Free memory was 79.1 MB in the beginning and 76.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 1.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:58:51,927 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 81.8 MB. Free memory was 52.7 MB in the beginning and 52.7 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:58:51,928 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.32 ms. Allocated memory is still 111.1 MB. Free memory was 79.1 MB in the beginning and 86.9 MB in the end (delta: -7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:58:51,929 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.01 ms. Allocated memory is still 111.1 MB. Free memory was 86.9 MB in the beginning and 84.9 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:58:51,931 INFO L168 Benchmark]: Boogie Preprocessor took 27.29 ms. Allocated memory is still 111.1 MB. Free memory was 84.9 MB in the beginning and 83.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:58:51,932 INFO L168 Benchmark]: RCFGBuilder took 779.58 ms. Allocated memory is still 111.1 MB. Free memory was 83.5 MB in the beginning and 56.9 MB in the end (delta: 26.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-30 01:58:51,933 INFO L168 Benchmark]: TraceAbstraction took 504.26 ms. Allocated memory is still 111.1 MB. Free memory was 56.2 MB in the beginning and 76.9 MB in the end (delta: -20.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:58:51,933 INFO L168 Benchmark]: Witness Printer took 4.70 ms. Allocated memory is still 111.1 MB. Free memory is still 76.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:58:51,943 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 81.8 MB. Free memory was 52.7 MB in the beginning and 52.7 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 341.32 ms. Allocated memory is still 111.1 MB. Free memory was 79.1 MB in the beginning and 86.9 MB in the end (delta: -7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.01 ms. Allocated memory is still 111.1 MB. Free memory was 86.9 MB in the beginning and 84.9 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.29 ms. Allocated memory is still 111.1 MB. Free memory was 84.9 MB in the beginning and 83.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 779.58 ms. Allocated memory is still 111.1 MB. Free memory was 83.5 MB in the beginning and 56.9 MB in the end (delta: 26.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 504.26 ms. Allocated memory is still 111.1 MB. Free memory was 56.2 MB in the beginning and 76.9 MB in the end (delta: -20.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.70 ms. Allocated memory is still 111.1 MB. Free memory is still 76.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 60, overapproximation of someBinaryArithmeticFLOAToperation at line 47, overapproximation of bitwiseAnd at line 24. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L68] float x = 0.0f / 0.0f; [L17] __int32_t i0, j0; [L18] __uint32_t i, ix; VAL [huge_floor=1000000000000000000000000000000] [L20] ieee_float_shape_type gf_u; [L21] gf_u.value = (x) [L22] EXPR gf_u.word [L22] (i0) = gf_u.word [L24] ix = (i0 & 0x7fffffff) [L25] j0 = (ix >> 23) - 0x7f VAL [huge_floor=1000000000000000000000000000000] [L26] COND FALSE !(j0 < 23) [L46] COND TRUE !((ix) < 0x7f800000L) [L47] return x + x; VAL [huge_floor=1000000000000000000000000000000] [L69] float res = floor_float(x); [L60] return x != x; [L72] COND TRUE !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1051.c", 3, "reach_error") VAL [huge_floor=1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:58:54,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:58:54,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:58:54,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:58:54,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:58:54,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:58:54,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:58:54,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:58:54,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:58:54,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:58:54,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:58:54,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:58:54,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:58:54,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:58:54,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:58:54,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:58:54,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:58:54,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:58:54,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:58:54,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:58:54,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:58:54,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:58:54,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:58:54,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:58:54,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:58:54,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:58:54,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:58:54,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:58:54,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:58:54,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:58:54,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:58:54,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:58:54,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:58:54,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:58:54,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:58:54,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:58:54,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:58:54,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:58:54,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:58:54,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:58:54,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:58:54,597 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9a736187-68a8-4d56-b4e5-9ae83c51efaa/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-30 01:58:54,624 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:58:54,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:58:54,625 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:58:54,627 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:58:54,628 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:58:54,628 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:58:54,628 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:58:54,628 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:58:54,628 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:58:54,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:58:54,630 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:58:54,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:58:54,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:58:54,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:58:54,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:58:54,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:58:54,631 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:58:54,631 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 01:58:54,631 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 01:58:54,632 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:58:54,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:58:54,632 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:58:54,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:58:54,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:58:54,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:58:54,633 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:58:54,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:58:54,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:58:54,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:58:54,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:58:54,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:58:54,634 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 01:58:54,635 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 01:58:54,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:58:54,647 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:58:54,647 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:58:54,647 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_9a736187-68a8-4d56-b4e5-9ae83c51efaa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9a736187-68a8-4d56-b4e5-9ae83c51efaa/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9192ebbb056e27a8831cb8246a8c32082898b28d [2020-11-30 01:58:55,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:58:55,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:58:55,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:58:55,141 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:58:55,144 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:58:55,145 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9a736187-68a8-4d56-b4e5-9ae83c51efaa/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c [2020-11-30 01:58:55,230 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9a736187-68a8-4d56-b4e5-9ae83c51efaa/bin/utaipan/data/38207002f/c3d0f78a850b4e189ecd58b390b82774/FLAGdc0a06462 [2020-11-30 01:58:55,724 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:58:55,725 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9a736187-68a8-4d56-b4e5-9ae83c51efaa/sv-benchmarks/c/float-newlib/float_req_bl_1051.c [2020-11-30 01:58:55,732 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9a736187-68a8-4d56-b4e5-9ae83c51efaa/bin/utaipan/data/38207002f/c3d0f78a850b4e189ecd58b390b82774/FLAGdc0a06462 [2020-11-30 01:58:56,069 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9a736187-68a8-4d56-b4e5-9ae83c51efaa/bin/utaipan/data/38207002f/c3d0f78a850b4e189ecd58b390b82774 [2020-11-30 01:58:56,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:58:56,073 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:58:56,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:58:56,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:58:56,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:58:56,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:58:56" (1/1) ... [2020-11-30 01:58:56,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b0a7e31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:56, skipping insertion in model container [2020-11-30 01:58:56,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:58:56" (1/1) ... [2020-11-30 01:58:56,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:58:56,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:58:56,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:58:56,306 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:58:56,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:58:56,350 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:58:56,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:56 WrapperNode [2020-11-30 01:58:56,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:58:56,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:58:56,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:58:56,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:58:56,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:56" (1/1) ... [2020-11-30 01:58:56,426 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:56" (1/1) ... [2020-11-30 01:58:56,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:58:56,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:58:56,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:58:56,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:58:56,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:56" (1/1) ... [2020-11-30 01:58:56,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:56" (1/1) ... [2020-11-30 01:58:56,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:56" (1/1) ... [2020-11-30 01:58:56,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:56" (1/1) ... [2020-11-30 01:58:56,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:56" (1/1) ... [2020-11-30 01:58:56,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:56" (1/1) ... [2020-11-30 01:58:56,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:56" (1/1) ... [2020-11-30 01:58:56,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:58:56,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:58:56,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:58:56,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:58:56,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9a736187-68a8-4d56-b4e5-9ae83c51efaa/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:58:56,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 01:58:56,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:58:56,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-30 01:58:56,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 01:58:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:58:56,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:58:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-30 01:58:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-30 01:58:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:58:57,498 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:58:57,499 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-30 01:58:57,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:58:57 BoogieIcfgContainer [2020-11-30 01:58:57,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:58:57,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:58:57,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:58:57,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:58:57,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:58:56" (1/3) ... [2020-11-30 01:58:57,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6941d6f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:58:57, skipping insertion in model container [2020-11-30 01:58:57,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:56" (2/3) ... [2020-11-30 01:58:57,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6941d6f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:58:57, skipping insertion in model container [2020-11-30 01:58:57,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:58:57" (3/3) ... [2020-11-30 01:58:57,508 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1051.c [2020-11-30 01:58:57,518 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:58:57,522 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:58:57,530 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:58:57,562 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:58:57,563 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:58:57,563 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:58:57,563 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:58:57,563 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:58:57,563 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:58:57,564 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:58:57,564 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:58:57,576 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-11-30 01:58:57,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 01:58:57,582 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:58:57,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:58:57,583 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:58:57,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:58:57,589 INFO L82 PathProgramCache]: Analyzing trace with hash -2022266355, now seen corresponding path program 1 times [2020-11-30 01:58:57,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:58:57,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820979040] [2020-11-30 01:58:57,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9a736187-68a8-4d56-b4e5-9ae83c51efaa/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-30 01:58:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:58:57,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 01:58:57,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:58:57,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:58:57,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:58:57,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:58:57,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [820979040] [2020-11-30 01:58:57,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:58:57,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 01:58:57,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661993242] [2020-11-30 01:58:57,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:58:57,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:58:57,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:58:57,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:58:57,785 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-11-30 01:58:57,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:58:57,802 INFO L93 Difference]: Finished difference Result 51 states and 77 transitions. [2020-11-30 01:58:57,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:58:57,804 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-30 01:58:57,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:58:57,813 INFO L225 Difference]: With dead ends: 51 [2020-11-30 01:58:57,814 INFO L226 Difference]: Without dead ends: 23 [2020-11-30 01:58:57,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:58:57,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-30 01:58:57,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-30 01:58:57,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 01:58:57,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2020-11-30 01:58:57,849 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 10 [2020-11-30 01:58:57,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:58:57,850 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2020-11-30 01:58:57,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:58:57,850 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2020-11-30 01:58:57,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 01:58:57,851 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:58:57,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:58:58,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 01:58:58,065 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:58:58,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:58:58,066 INFO L82 PathProgramCache]: Analyzing trace with hash -62606256, now seen corresponding path program 1 times [2020-11-30 01:58:58,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:58:58,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451550369] [2020-11-30 01:58:58,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9a736187-68a8-4d56-b4e5-9ae83c51efaa/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-30 01:58:58,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:58:58,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 01:58:58,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:58:58,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:58:58,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:58:58,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:58:58,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451550369] [2020-11-30 01:58:58,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:58:58,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-30 01:58:58,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233596779] [2020-11-30 01:58:58,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 01:58:58,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:58:58,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 01:58:58,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:58:58,538 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand 10 states. [2020-11-30 01:58:59,245 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2020-11-30 01:58:59,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:58:59,270 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2020-11-30 01:58:59,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:58:59,285 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2020-11-30 01:58:59,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:58:59,285 INFO L225 Difference]: With dead ends: 34 [2020-11-30 01:58:59,286 INFO L226 Difference]: Without dead ends: 18 [2020-11-30 01:58:59,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-30 01:58:59,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-30 01:58:59,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-30 01:58:59,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-30 01:58:59,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-11-30 01:58:59,290 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2020-11-30 01:58:59,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:58:59,291 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-11-30 01:58:59,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 01:58:59,291 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-11-30 01:58:59,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 01:58:59,291 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:58:59,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:58:59,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 01:58:59,493 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:58:59,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:58:59,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1612289523, now seen corresponding path program 1 times [2020-11-30 01:58:59,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:58:59,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767327678] [2020-11-30 01:58:59,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9a736187-68a8-4d56-b4e5-9ae83c51efaa/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-30 01:58:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:58:59,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 01:58:59,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:58:59,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:58:59,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:58:59,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:58:59,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1767327678] [2020-11-30 01:58:59,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:58:59,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-30 01:58:59,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119740319] [2020-11-30 01:58:59,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 01:58:59,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:58:59,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 01:58:59,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:58:59,898 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 8 states. [2020-11-30 01:59:00,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:59:00,068 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-11-30 01:59:00,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:59:00,068 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-11-30 01:59:00,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:59:00,069 INFO L225 Difference]: With dead ends: 18 [2020-11-30 01:59:00,069 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 01:59:00,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:59:00,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 01:59:00,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 01:59:00,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 01:59:00,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 01:59:00,070 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-30 01:59:00,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:59:00,070 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:59:00,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 01:59:00,070 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:59:00,070 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 01:59:00,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 01:59:00,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 01:59:00,380 INFO L274 CegarLoopResult]: For program point L31(lines 31 33) no Hoare annotation was computed. [2020-11-30 01:59:00,380 INFO L270 CegarLoopResult]: At program point L60(line 60) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_floor_float_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_floor_float_~x))) [2020-11-30 01:59:00,380 INFO L274 CegarLoopResult]: For program point L27(lines 27 44) no Hoare annotation was computed. [2020-11-30 01:59:00,380 INFO L270 CegarLoopResult]: At program point L56(lines 16 57) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_floor_float_#res|)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_floor_float_~x))) [2020-11-30 01:59:00,381 INFO L274 CegarLoopResult]: For program point L19-1(lines 19 23) no Hoare annotation was computed. [2020-11-30 01:59:00,381 INFO L270 CegarLoopResult]: At program point L19-2(lines 19 23) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_floor_float_~x)) [2020-11-30 01:59:00,381 INFO L274 CegarLoopResult]: For program point L19-3(lines 19 23) no Hoare annotation was computed. [2020-11-30 01:59:00,381 INFO L277 CegarLoopResult]: At program point L77(lines 62 78) the Hoare annotation is: true [2020-11-30 01:59:00,381 INFO L274 CegarLoopResult]: For program point L40(lines 40 41) no Hoare annotation was computed. [2020-11-30 01:59:00,381 INFO L274 CegarLoopResult]: For program point L40-2(lines 40 41) no Hoare annotation was computed. [2020-11-30 01:59:00,381 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-30 01:59:00,381 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-30 01:59:00,381 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 01:59:00,381 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 01:59:00,381 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 01:59:00,381 INFO L274 CegarLoopResult]: For program point L28(lines 28 34) no Hoare annotation was computed. [2020-11-30 01:59:00,382 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 01:59:00,382 INFO L274 CegarLoopResult]: For program point L37(lines 37 38) no Hoare annotation was computed. [2020-11-30 01:59:00,382 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 01:59:00,382 INFO L274 CegarLoopResult]: For program point L29(lines 29 33) no Hoare annotation was computed. [2020-11-30 01:59:00,382 INFO L274 CegarLoopResult]: For program point L46(lines 46 49) no Hoare annotation was computed. [2020-11-30 01:59:00,382 INFO L274 CegarLoopResult]: For program point L26(lines 26 50) no Hoare annotation was computed. [2020-11-30 01:59:00,382 INFO L274 CegarLoopResult]: For program point L51(lines 51 55) no Hoare annotation was computed. [2020-11-30 01:59:00,382 INFO L274 CegarLoopResult]: For program point L51-1(lines 16 57) no Hoare annotation was computed. [2020-11-30 01:59:00,382 INFO L274 CegarLoopResult]: For program point L51-2(lines 51 55) no Hoare annotation was computed. [2020-11-30 01:59:00,382 INFO L274 CegarLoopResult]: For program point L72(lines 72 75) no Hoare annotation was computed. [2020-11-30 01:59:00,382 INFO L274 CegarLoopResult]: For program point L39(lines 39 43) no Hoare annotation was computed. [2020-11-30 01:59:00,387 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 01:59:00,393 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 01:59:00,398 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 01:59:00,399 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 01:59:00,399 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 01:59:00,400 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 01:59:00,400 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 01:59:00,400 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 01:59:00,401 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 01:59:00,401 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 01:59:00,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:59:00 BoogieIcfgContainer [2020-11-30 01:59:00,403 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:59:00,404 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:59:00,404 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:59:00,404 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:59:00,405 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:58:57" (3/4) ... [2020-11-30 01:59:00,408 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 01:59:00,422 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-30 01:59:00,422 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-30 01:59:00,423 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:59:00,423 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:59:00,451 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-11-30 01:59:00,452 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-11-30 01:59:00,453 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && 1bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-11-30 01:59:00,494 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9a736187-68a8-4d56-b4e5-9ae83c51efaa/bin/utaipan/witness.graphml [2020-11-30 01:59:00,494 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:59:00,497 INFO L168 Benchmark]: Toolchain (without parser) took 4422.44 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 48.5 MB in the beginning and 32.5 MB in the end (delta: 16.0 MB). Peak memory consumption was 32.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:59:00,498 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 65.0 MB. Free memory is still 47.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:59:00,499 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.07 ms. Allocated memory is still 65.0 MB. Free memory was 48.4 MB in the beginning and 37.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:59:00,501 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.41 ms. Allocated memory is still 65.0 MB. Free memory was 37.5 MB in the beginning and 48.5 MB in the end (delta: -11.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:59:00,502 INFO L168 Benchmark]: Boogie Preprocessor took 80.09 ms. Allocated memory is still 65.0 MB. Free memory was 48.5 MB in the beginning and 46.8 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:59:00,502 INFO L168 Benchmark]: RCFGBuilder took 964.09 ms. Allocated memory is still 65.0 MB. Free memory was 46.8 MB in the beginning and 29.6 MB in the end (delta: 17.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-30 01:59:00,503 INFO L168 Benchmark]: TraceAbstraction took 2901.68 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 29.1 MB in the beginning and 36.0 MB in the end (delta: -6.8 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:59:00,503 INFO L168 Benchmark]: Witness Printer took 90.80 ms. Allocated memory is still 81.8 MB. Free memory was 36.0 MB in the beginning and 32.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:59:00,508 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 65.0 MB. Free memory is still 47.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 277.07 ms. Allocated memory is still 65.0 MB. Free memory was 48.4 MB in the beginning and 37.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 101.41 ms. Allocated memory is still 65.0 MB. Free memory was 37.5 MB in the beginning and 48.5 MB in the end (delta: -11.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 80.09 ms. Allocated memory is still 65.0 MB. Free memory was 48.5 MB in the beginning and 46.8 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 964.09 ms. Allocated memory is still 65.0 MB. Free memory was 46.8 MB in the beginning and 29.6 MB in the end (delta: 17.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2901.68 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 29.1 MB in the beginning and 36.0 MB in the end (delta: -6.8 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. * Witness Printer took 90.80 ms. Allocated memory is still 81.8 MB. Free memory was 36.0 MB in the beginning and 32.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 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] - 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: 19]: Loop Invariant [2020-11-30 01:59:00,519 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 01:59:00,520 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 60]: Loop Invariant [2020-11-30 01:59:00,520 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 01:59:00,521 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 01:59:00,522 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 01:59:00,522 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && 1bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant [2020-11-30 01:59:00,524 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 01:59:00,524 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 01:59:00,524 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 01:59:00,525 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 18 SDslu, 65 SDs, 0 SdLazy, 48 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 41 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 11 QuantifiedInterpolants, 2710 SizeOfPredicates, 19 NumberOfNonLiveVariables, 146 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...