./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2565ac94-c12d-49e5-9aeb-c95496ef81c4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2565ac94-c12d-49e5-9aeb-c95496ef81c4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2565ac94-c12d-49e5-9aeb-c95496ef81c4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2565ac94-c12d-49e5-9aeb-c95496ef81c4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2565ac94-c12d-49e5-9aeb-c95496ef81c4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2565ac94-c12d-49e5-9aeb-c95496ef81c4/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5a9c16fc526c8975deb8347cefa91cf6b0e12443 ....................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2565ac94-c12d-49e5-9aeb-c95496ef81c4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2565ac94-c12d-49e5-9aeb-c95496ef81c4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2565ac94-c12d-49e5-9aeb-c95496ef81c4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2565ac94-c12d-49e5-9aeb-c95496ef81c4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2565ac94-c12d-49e5-9aeb-c95496ef81c4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2565ac94-c12d-49e5-9aeb-c95496ef81c4/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5a9c16fc526c8975deb8347cefa91cf6b0e12443 ........................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:46:11,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:46:11,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:46:11,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:46:11,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:46:11,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:46:11,912 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:46:11,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:46:11,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:46:11,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:46:11,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:46:11,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:46:11,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:46:11,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:46:11,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:46:11,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:46:11,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:46:11,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:46:11,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:46:11,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:46:11,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:46:11,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:46:11,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:46:11,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:46:11,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:46:11,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:46:11,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:46:11,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:46:11,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:46:11,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:46:11,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:46:11,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:46:11,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:46:11,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:46:11,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:46:11,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:46:11,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:46:11,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:46:11,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:46:11,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:46:11,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:46:11,966 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2565ac94-c12d-49e5-9aeb-c95496ef81c4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:46:11,990 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:46:11,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:46:11,991 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:46:11,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:46:11,991 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:46:11,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:46:11,992 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:46:11,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:46:11,992 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:46:11,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:46:11,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:46:11,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:46:11,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:46:11,993 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:46:11,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:46:11,993 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:46:11,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:46:11,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:46:11,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:46:11,994 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:46:11,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:46:11,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:46:11,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:46:11,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:46:11,995 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:46:11,995 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:46:11,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:46:11,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:46:11,996 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_2565ac94-c12d-49e5-9aeb-c95496ef81c4/bin/uautomizer 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(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer 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 -> 5a9c16fc526c8975deb8347cefa91cf6b0e12443 [2019-11-25 08:46:12,159 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:46:12,170 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:46:12,173 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:46:12,174 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:46:12,174 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:46:12,175 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2565ac94-c12d-49e5-9aeb-c95496ef81c4/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float2.c [2019-11-25 08:46:12,226 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2565ac94-c12d-49e5-9aeb-c95496ef81c4/bin/uautomizer/data/c68ce896e/737dc075c2fd44538a421191cc4179a4/FLAGbf5187f20 [2019-11-25 08:46:12,618 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:46:12,619 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2565ac94-c12d-49e5-9aeb-c95496ef81c4/sv-benchmarks/c/floats-cbmc-regression/float2.c [2019-11-25 08:46:12,624 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2565ac94-c12d-49e5-9aeb-c95496ef81c4/bin/uautomizer/data/c68ce896e/737dc075c2fd44538a421191cc4179a4/FLAGbf5187f20 [2019-11-25 08:46:12,637 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2565ac94-c12d-49e5-9aeb-c95496ef81c4/bin/uautomizer/data/c68ce896e/737dc075c2fd44538a421191cc4179a4 [2019-11-25 08:46:12,640 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:46:12,642 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:46:12,645 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:46:12,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:46:12,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:46:12,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:12" (1/1) ... [2019-11-25 08:46:12,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@486f8fd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:12, skipping insertion in model container [2019-11-25 08:46:12,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:12" (1/1) ... [2019-11-25 08:46:12,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:46:12,673 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:46:12,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:46:12,831 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:46:12,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:46:12,925 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:46:12,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:12 WrapperNode [2019-11-25 08:46:12,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:46:12,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:46:12,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:46:12,926 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:46:12,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:12" (1/1) ... [2019-11-25 08:46:12,941 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:12" (1/1) ... [2019-11-25 08:46:12,957 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:46:12,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:46:12,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:46:12,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:46:12,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:12" (1/1) ... [2019-11-25 08:46:12,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:12" (1/1) ... [2019-11-25 08:46:12,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:12" (1/1) ... [2019-11-25 08:46:12,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:12" (1/1) ... [2019-11-25 08:46:12,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:12" (1/1) ... [2019-11-25 08:46:12,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:12" (1/1) ... [2019-11-25 08:46:12,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:12" (1/1) ... [2019-11-25 08:46:12,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:46:12,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:46:12,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:46:12,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:46:12,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2565ac94-c12d-49e5-9aeb-c95496ef81c4/bin/uautomizer/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 [2019-11-25 08:46:13,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:46:13,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:46:13,211 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:46:13,212 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-25 08:46:13,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:13 BoogieIcfgContainer [2019-11-25 08:46:13,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:46:13,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:46:13,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:46:13,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:46:13,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:46:12" (1/3) ... [2019-11-25 08:46:13,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2536c513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:46:13, skipping insertion in model container [2019-11-25 08:46:13,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:12" (2/3) ... [2019-11-25 08:46:13,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2536c513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:46:13, skipping insertion in model container [2019-11-25 08:46:13,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:13" (3/3) ... [2019-11-25 08:46:13,221 INFO L109 eAbstractionObserver]: Analyzing ICFG float2.c [2019-11-25 08:46:13,230 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:46:13,235 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-25 08:46:13,245 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-25 08:46:13,267 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:46:13,267 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:46:13,267 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:46:13,267 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:46:13,268 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:46:13,268 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:46:13,268 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:46:13,268 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:46:13,282 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-11-25 08:46:13,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-25 08:46:13,287 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:13,288 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-25 08:46:13,292 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:13,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:13,309 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-11-25 08:46:13,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:13,317 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888713990] [2019-11-25 08:46:13,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:13,412 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:13,413 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:46:13,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:46:13 BoogieIcfgContainer [2019-11-25 08:46:13,428 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:46:13,429 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:46:13,429 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:46:13,429 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:46:13,430 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:13" (3/4) ... [2019-11-25 08:46:13,434 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:46:13,434 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:46:13,436 INFO L168 Benchmark]: Toolchain (without parser) took 793.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -172.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:13,437 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:13,438 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -204.6 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:13,438 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.65 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:13,439 INFO L168 Benchmark]: Boogie Preprocessor took 19.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:13,440 INFO L168 Benchmark]: RCFGBuilder took 234.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:13,440 INFO L168 Benchmark]: TraceAbstraction took 214.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:13,441 INFO L168 Benchmark]: Witness Printer took 5.00 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:13,449 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 280.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -204.6 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.65 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 234.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 214.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. * Witness Printer took 5.00 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 10. Possible FailurePath: [L5] float a; [L6] double b; [L9] a=1.25L [L10] COND TRUE !(a==1.25) [L10] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 4 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, 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 0.1.24-6b5699a [2019-11-25 08:46:15,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:46:15,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:46:15,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:46:15,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:46:15,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:46:15,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:46:15,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:46:15,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:46:15,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:46:15,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:46:15,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:46:15,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:46:15,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:46:15,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:46:15,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:46:15,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:46:15,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:46:15,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:46:15,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:46:15,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:46:15,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:46:15,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:46:15,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:46:15,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:46:15,399 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:46:15,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:46:15,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:46:15,400 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:46:15,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:46:15,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:46:15,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:46:15,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:46:15,402 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:46:15,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:46:15,403 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:46:15,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:46:15,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:46:15,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:46:15,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:46:15,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:46:15,406 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2565ac94-c12d-49e5-9aeb-c95496ef81c4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-25 08:46:15,419 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:46:15,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:46:15,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:46:15,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:46:15,421 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:46:15,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:46:15,422 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:46:15,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:46:15,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:46:15,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:46:15,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:46:15,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:46:15,423 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:46:15,424 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:46:15,424 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:46:15,424 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:46:15,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:46:15,425 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:46:15,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:46:15,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:46:15,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:46:15,426 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:46:15,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:46:15,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:46:15,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:46:15,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:46:15,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:46:15,427 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:46:15,428 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:46:15,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:46:15,428 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:46:15,428 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_2565ac94-c12d-49e5-9aeb-c95496ef81c4/bin/uautomizer 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(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer 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 -> 5a9c16fc526c8975deb8347cefa91cf6b0e12443 [2019-11-25 08:46:15,715 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:46:15,726 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:46:15,729 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:46:15,730 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:46:15,731 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:46:15,731 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2565ac94-c12d-49e5-9aeb-c95496ef81c4/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float2.c [2019-11-25 08:46:15,781 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2565ac94-c12d-49e5-9aeb-c95496ef81c4/bin/uautomizer/data/0b8f51b1b/82deff92cbf9421281af4242835c6c53/FLAG500382c20 [2019-11-25 08:46:16,131 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:46:16,131 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2565ac94-c12d-49e5-9aeb-c95496ef81c4/sv-benchmarks/c/floats-cbmc-regression/float2.c [2019-11-25 08:46:16,138 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2565ac94-c12d-49e5-9aeb-c95496ef81c4/bin/uautomizer/data/0b8f51b1b/82deff92cbf9421281af4242835c6c53/FLAG500382c20 [2019-11-25 08:46:16,509 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2565ac94-c12d-49e5-9aeb-c95496ef81c4/bin/uautomizer/data/0b8f51b1b/82deff92cbf9421281af4242835c6c53 [2019-11-25 08:46:16,512 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:46:16,522 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:46:16,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:46:16,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:46:16,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:46:16,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:16" (1/1) ... [2019-11-25 08:46:16,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a3e2dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:16, skipping insertion in model container [2019-11-25 08:46:16,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:16" (1/1) ... [2019-11-25 08:46:16,538 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:46:16,556 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:46:16,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:46:16,765 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:46:16,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:46:16,797 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:46:16,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:16 WrapperNode [2019-11-25 08:46:16,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:46:16,799 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:46:16,799 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:46:16,800 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:46:16,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:16" (1/1) ... [2019-11-25 08:46:16,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:16" (1/1) ... [2019-11-25 08:46:16,834 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:46:16,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:46:16,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:46:16,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:46:16,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:16" (1/1) ... [2019-11-25 08:46:16,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:16" (1/1) ... [2019-11-25 08:46:16,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:16" (1/1) ... [2019-11-25 08:46:16,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:16" (1/1) ... [2019-11-25 08:46:16,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:16" (1/1) ... [2019-11-25 08:46:16,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:16" (1/1) ... [2019-11-25 08:46:16,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:16" (1/1) ... [2019-11-25 08:46:16,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:46:16,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:46:16,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:46:16,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:46:16,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2565ac94-c12d-49e5-9aeb-c95496ef81c4/bin/uautomizer/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 [2019-11-25 08:46:16,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:46:16,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:46:17,251 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:46:17,251 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-25 08:46:17,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:17 BoogieIcfgContainer [2019-11-25 08:46:17,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:46:17,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:46:17,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:46:17,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:46:17,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:46:16" (1/3) ... [2019-11-25 08:46:17,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f39ba06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:46:17, skipping insertion in model container [2019-11-25 08:46:17,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:16" (2/3) ... [2019-11-25 08:46:17,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f39ba06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:46:17, skipping insertion in model container [2019-11-25 08:46:17,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:17" (3/3) ... [2019-11-25 08:46:17,275 INFO L109 eAbstractionObserver]: Analyzing ICFG float2.c [2019-11-25 08:46:17,283 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:46:17,302 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-25 08:46:17,312 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-25 08:46:17,356 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:46:17,357 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:46:17,357 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:46:17,357 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:46:17,357 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:46:17,357 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:46:17,358 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:46:17,358 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:46:17,372 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-25 08:46:17,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-25 08:46:17,380 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:17,381 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-25 08:46:17,381 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:17,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:17,387 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2019-11-25 08:46:17,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:46:17,398 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191211025] [2019-11-25 08:46:17,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2565ac94-c12d-49e5-9aeb-c95496ef81c4/bin/uautomizer/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 [2019-11-25 08:46:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:17,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:17,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:17,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:17,507 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:46:17,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:17,675 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1191211025] [2019-11-25 08:46:17,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:17,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-25 08:46:17,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083506063] [2019-11-25 08:46:17,680 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:46:17,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:46:17,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:46:17,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:46:17,691 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2019-11-25 08:46:17,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:17,790 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2019-11-25 08:46:17,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:46:17,791 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-25 08:46:17,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:17,800 INFO L225 Difference]: With dead ends: 35 [2019-11-25 08:46:17,800 INFO L226 Difference]: Without dead ends: 15 [2019-11-25 08:46:17,803 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:46:17,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-25 08:46:17,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-25 08:46:17,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-25 08:46:17,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2019-11-25 08:46:17,832 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 4 [2019-11-25 08:46:17,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:17,832 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2019-11-25 08:46:17,833 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:46:17,833 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2019-11-25 08:46:17,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-25 08:46:17,833 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:17,834 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-25 08:46:18,041 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-25 08:46:18,041 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:18,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:18,042 INFO L82 PathProgramCache]: Analyzing trace with hash 889629862, now seen corresponding path program 1 times [2019-11-25 08:46:18,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:46:18,042 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1928460244] [2019-11-25 08:46:18,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2565ac94-c12d-49e5-9aeb-c95496ef81c4/bin/uautomizer/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 [2019-11-25 08:46:18,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:18,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:18,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:18,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:18,077 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:46:18,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:18,087 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1928460244] [2019-11-25 08:46:18,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:18,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-25 08:46:18,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479070616] [2019-11-25 08:46:18,088 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:46:18,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:46:18,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:46:18,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:46:18,090 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 3 states. [2019-11-25 08:46:18,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:18,152 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2019-11-25 08:46:18,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:46:18,153 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-25 08:46:18,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:18,154 INFO L225 Difference]: With dead ends: 15 [2019-11-25 08:46:18,154 INFO L226 Difference]: Without dead ends: 13 [2019-11-25 08:46:18,155 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:46:18,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-25 08:46:18,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-25 08:46:18,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-25 08:46:18,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2019-11-25 08:46:18,157 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 6 [2019-11-25 08:46:18,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:18,158 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2019-11-25 08:46:18,158 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:46:18,158 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2019-11-25 08:46:18,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-25 08:46:18,162 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:18,162 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:18,371 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-25 08:46:18,372 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:18,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:18,372 INFO L82 PathProgramCache]: Analyzing trace with hash 235930184, now seen corresponding path program 1 times [2019-11-25 08:46:18,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:46:18,373 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [104009987] [2019-11-25 08:46:18,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2565ac94-c12d-49e5-9aeb-c95496ef81c4/bin/uautomizer/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 [2019-11-25 08:46:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:18,395 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:18,396 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:18,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:18,409 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:46:18,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:18,423 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [104009987] [2019-11-25 08:46:18,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:18,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-25 08:46:18,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118945647] [2019-11-25 08:46:18,424 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:46:18,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:46:18,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:46:18,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:46:18,424 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand 3 states. [2019-11-25 08:46:18,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:18,540 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2019-11-25 08:46:18,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:46:18,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-25 08:46:18,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:18,541 INFO L225 Difference]: With dead ends: 13 [2019-11-25 08:46:18,541 INFO L226 Difference]: Without dead ends: 11 [2019-11-25 08:46:18,541 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:46:18,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-25 08:46:18,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-25 08:46:18,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-25 08:46:18,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2019-11-25 08:46:18,544 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 8 [2019-11-25 08:46:18,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:18,544 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2019-11-25 08:46:18,544 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:46:18,544 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2019-11-25 08:46:18,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-25 08:46:18,544 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:18,544 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:18,745 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-25 08:46:18,745 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:18,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:18,746 INFO L82 PathProgramCache]: Analyzing trace with hash -904234870, now seen corresponding path program 1 times [2019-11-25 08:46:18,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:46:18,746 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895840088] [2019-11-25 08:46:18,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2565ac94-c12d-49e5-9aeb-c95496ef81c4/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-11-25 08:46:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:18,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:18,775 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:18,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:18,799 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:46:18,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:18,816 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895840088] [2019-11-25 08:46:18,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:18,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-25 08:46:18,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429079801] [2019-11-25 08:46:18,816 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:46:18,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:46:18,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:46:18,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:46:18,817 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 3 states. [2019-11-25 08:46:18,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:18,909 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2019-11-25 08:46:18,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:46:18,911 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-11-25 08:46:18,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:18,911 INFO L225 Difference]: With dead ends: 11 [2019-11-25 08:46:18,911 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:46:18,912 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:46:18,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:46:18,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:46:18,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:46:18,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:46:18,912 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-11-25 08:46:18,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:18,913 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:46:18,913 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:46:18,913 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:46:18,913 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:46:19,114 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-25 08:46:19,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-25 08:46:19,119 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-25 08:46:19,120 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2019-11-25 08:46:19,120 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2019-11-25 08:46:19,120 INFO L444 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-11-25 08:46:19,120 INFO L444 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2019-11-25 08:46:19,120 INFO L444 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-11-25 08:46:19,120 INFO L444 ceAbstractionStarter]: For program point L17-1(line 17) no Hoare annotation was computed. [2019-11-25 08:46:19,120 INFO L444 ceAbstractionStarter]: For program point L17-3(line 17) no Hoare annotation was computed. [2019-11-25 08:46:19,120 INFO L444 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2019-11-25 08:46:19,121 INFO L444 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2019-11-25 08:46:19,121 INFO L444 ceAbstractionStarter]: For program point L13-3(line 13) no Hoare annotation was computed. [2019-11-25 08:46:19,121 INFO L444 ceAbstractionStarter]: For program point L3(lines 3 22) no Hoare annotation was computed. [2019-11-25 08:46:19,121 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-25 08:46:19,121 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-25 08:46:19,121 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-25 08:46:19,121 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2019-11-25 08:46:19,121 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2019-11-25 08:46:19,121 INFO L444 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2019-11-25 08:46:19,122 INFO L444 ceAbstractionStarter]: For program point L10-1(line 10) no Hoare annotation was computed. [2019-11-25 08:46:19,122 INFO L444 ceAbstractionStarter]: For program point L10-3(line 10) no Hoare annotation was computed. [2019-11-25 08:46:19,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:46:19 BoogieIcfgContainer [2019-11-25 08:46:19,125 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:46:19,125 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:46:19,125 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:46:19,125 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:46:19,126 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:17" (3/4) ... [2019-11-25 08:46:19,128 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:46:19,136 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-25 08:46:19,136 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-25 08:46:19,137 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-25 08:46:19,172 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2565ac94-c12d-49e5-9aeb-c95496ef81c4/bin/uautomizer/witness.graphml [2019-11-25 08:46:19,172 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:46:19,174 INFO L168 Benchmark]: Toolchain (without parser) took 2660.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -110.7 MB). Peak memory consumption was 50.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:19,174 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:19,175 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.70 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:19,175 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.09 ms. Allocated memory is still 1.0 GB. Free memory is still 949.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:19,176 INFO L168 Benchmark]: Boogie Preprocessor took 90.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 949.7 MB in the beginning and 1.2 GB in the end (delta: -202.1 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:19,176 INFO L168 Benchmark]: RCFGBuilder took 327.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:19,177 INFO L168 Benchmark]: TraceAbstraction took 1871.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 67.3 MB). Peak memory consumption was 67.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:19,177 INFO L168 Benchmark]: Witness Printer took 47.21 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:19,179 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 275.70 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.09 ms. Allocated memory is still 1.0 GB. Free memory is still 949.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 90.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 949.7 MB in the beginning and 1.2 GB in the end (delta: -202.1 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 327.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1871.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 67.3 MB). Peak memory consumption was 67.3 MB. Max. memory is 11.5 GB. * Witness Printer took 47.21 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 21]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 10]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 4 error locations. Result: SAFE, OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 14 SDslu, 5 SDs, 0 SdLazy, 37 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 596 SizeOfPredicates, 8 NumberOfNonLiveVariables, 36 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...