./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a1ff9320-872f-4805-9734-593259aa7831/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a1ff9320-872f-4805-9734-593259aa7831/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a1ff9320-872f-4805-9734-593259aa7831/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a1ff9320-872f-4805-9734-593259aa7831/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a1ff9320-872f-4805-9734-593259aa7831/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a1ff9320-872f-4805-9734-593259aa7831/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_a1ff9320-872f-4805-9734-593259aa7831/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a1ff9320-872f-4805-9734-593259aa7831/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a1ff9320-872f-4805-9734-593259aa7831/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a1ff9320-872f-4805-9734-593259aa7831/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a1ff9320-872f-4805-9734-593259aa7831/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a1ff9320-872f-4805-9734-593259aa7831/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 0.1.25-f470102 [2019-12-07 13:09:36,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 13:09:36,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 13:09:36,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 13:09:36,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 13:09:36,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 13:09:36,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 13:09:36,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 13:09:36,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 13:09:36,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 13:09:36,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 13:09:36,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 13:09:36,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 13:09:36,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 13:09:36,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 13:09:36,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 13:09:36,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 13:09:36,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 13:09:36,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 13:09:36,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 13:09:36,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 13:09:36,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 13:09:36,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 13:09:36,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 13:09:36,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 13:09:36,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 13:09:36,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 13:09:36,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 13:09:36,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 13:09:36,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 13:09:36,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 13:09:36,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 13:09:36,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 13:09:36,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 13:09:36,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 13:09:36,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 13:09:36,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 13:09:36,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 13:09:36,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 13:09:36,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 13:09:36,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 13:09:36,998 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a1ff9320-872f-4805-9734-593259aa7831/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 13:09:37,007 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 13:09:37,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 13:09:37,008 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 13:09:37,008 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 13:09:37,008 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 13:09:37,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 13:09:37,008 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 13:09:37,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 13:09:37,009 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 13:09:37,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 13:09:37,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 13:09:37,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 13:09:37,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 13:09:37,009 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 13:09:37,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 13:09:37,009 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 13:09:37,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 13:09:37,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 13:09:37,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 13:09:37,010 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 13:09:37,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 13:09:37,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 13:09:37,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 13:09:37,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 13:09:37,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 13:09:37,011 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 13:09:37,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 13:09:37,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 13:09:37,011 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 13:09:37,011 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_a1ff9320-872f-4805-9734-593259aa7831/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 [2019-12-07 13:09:37,116 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 13:09:37,126 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 13:09:37,129 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 13:09:37,130 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 13:09:37,130 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 13:09:37,131 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a1ff9320-872f-4805-9734-593259aa7831/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float2.c [2019-12-07 13:09:37,179 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a1ff9320-872f-4805-9734-593259aa7831/bin/uautomizer/data/59e64a291/b3d09dd5f77f41d5b4bd5650fa70df69/FLAGf23bda0fd [2019-12-07 13:09:37,485 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 13:09:37,485 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a1ff9320-872f-4805-9734-593259aa7831/sv-benchmarks/c/floats-cbmc-regression/float2.c [2019-12-07 13:09:37,490 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a1ff9320-872f-4805-9734-593259aa7831/bin/uautomizer/data/59e64a291/b3d09dd5f77f41d5b4bd5650fa70df69/FLAGf23bda0fd [2019-12-07 13:09:37,498 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a1ff9320-872f-4805-9734-593259aa7831/bin/uautomizer/data/59e64a291/b3d09dd5f77f41d5b4bd5650fa70df69 [2019-12-07 13:09:37,500 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 13:09:37,501 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 13:09:37,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 13:09:37,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 13:09:37,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 13:09:37,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:09:37" (1/1) ... [2019-12-07 13:09:37,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@545433eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:37, skipping insertion in model container [2019-12-07 13:09:37,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:09:37" (1/1) ... [2019-12-07 13:09:37,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 13:09:37,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 13:09:37,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:09:37,619 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 13:09:37,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:09:37,668 INFO L208 MainTranslator]: Completed translation [2019-12-07 13:09:37,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:37 WrapperNode [2019-12-07 13:09:37,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 13:09:37,669 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 13:09:37,669 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 13:09:37,669 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 13:09:37,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:37" (1/1) ... [2019-12-07 13:09:37,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:37" (1/1) ... [2019-12-07 13:09:37,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 13:09:37,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 13:09:37,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 13:09:37,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 13:09:37,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:37" (1/1) ... [2019-12-07 13:09:37,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:37" (1/1) ... [2019-12-07 13:09:37,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:37" (1/1) ... [2019-12-07 13:09:37,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:37" (1/1) ... [2019-12-07 13:09:37,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:37" (1/1) ... [2019-12-07 13:09:37,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:37" (1/1) ... [2019-12-07 13:09:37,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:37" (1/1) ... [2019-12-07 13:09:37,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 13:09:37,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 13:09:37,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 13:09:37,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 13:09:37,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1ff9320-872f-4805-9734-593259aa7831/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 [2019-12-07 13:09:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 13:09:37,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 13:09:37,818 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 13:09:37,819 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 13:09:37,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:09:37 BoogieIcfgContainer [2019-12-07 13:09:37,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 13:09:37,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 13:09:37,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 13:09:37,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 13:09:37,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:09:37" (1/3) ... [2019-12-07 13:09:37,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f9acb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:09:37, skipping insertion in model container [2019-12-07 13:09:37,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:37" (2/3) ... [2019-12-07 13:09:37,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f9acb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:09:37, skipping insertion in model container [2019-12-07 13:09:37,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:09:37" (3/3) ... [2019-12-07 13:09:37,824 INFO L109 eAbstractionObserver]: Analyzing ICFG float2.c [2019-12-07 13:09:37,831 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 13:09:37,835 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-12-07 13:09:37,843 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 13:09:37,858 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 13:09:37,858 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 13:09:37,858 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 13:09:37,858 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 13:09:37,858 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 13:09:37,858 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 13:09:37,858 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 13:09:37,859 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 13:09:37,868 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-12-07 13:09:37,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 13:09:37,872 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:09:37,872 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 13:09:37,872 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:09:37,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:09:37,876 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-12-07 13:09:37,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:09:37,882 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718185822] [2019-12-07 13:09:37,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:09:37,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:09:37,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:09:37,947 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:09:37,947 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 13:09:37,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:09:37 BoogieIcfgContainer [2019-12-07 13:09:37,957 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 13:09:37,957 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 13:09:37,957 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 13:09:37,957 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 13:09:37,958 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:09:37" (3/4) ... [2019-12-07 13:09:37,960 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 13:09:37,960 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 13:09:37,961 INFO L168 Benchmark]: Toolchain (without parser) took 460.14 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -119.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:09:37,962 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:09:37,962 INFO L168 Benchmark]: CACSL2BoogieTranslator took 167.20 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -149.6 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-12-07 13:09:37,963 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.85 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:09:37,963 INFO L168 Benchmark]: Boogie Preprocessor took 10.51 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:09:37,964 INFO L168 Benchmark]: RCFGBuilder took 120.17 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-12-07 13:09:37,964 INFO L168 Benchmark]: TraceAbstraction took 136.67 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 13:09:37,964 INFO L168 Benchmark]: Witness Printer took 2.84 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:09:37,966 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 167.20 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -149.6 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.85 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.51 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 120.17 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 136.67 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Witness Printer took 2.84 ms. Allocated memory is still 1.1 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: 0.0s, 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 0.1.25-f470102 [2019-12-07 13:09:39,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 13:09:39,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 13:09:39,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 13:09:39,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 13:09:39,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 13:09:39,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 13:09:39,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 13:09:39,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 13:09:39,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 13:09:39,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 13:09:39,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 13:09:39,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 13:09:39,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 13:09:39,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 13:09:39,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 13:09:39,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 13:09:39,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 13:09:39,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 13:09:39,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 13:09:39,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 13:09:39,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 13:09:39,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 13:09:39,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 13:09:39,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 13:09:39,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 13:09:39,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 13:09:39,309 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 13:09:39,309 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 13:09:39,310 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 13:09:39,310 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 13:09:39,311 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 13:09:39,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 13:09:39,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 13:09:39,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 13:09:39,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 13:09:39,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 13:09:39,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 13:09:39,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 13:09:39,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 13:09:39,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 13:09:39,314 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a1ff9320-872f-4805-9734-593259aa7831/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 13:09:39,326 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 13:09:39,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 13:09:39,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 13:09:39,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 13:09:39,327 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 13:09:39,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 13:09:39,328 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 13:09:39,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 13:09:39,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 13:09:39,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 13:09:39,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 13:09:39,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 13:09:39,329 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 13:09:39,329 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 13:09:39,329 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 13:09:39,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 13:09:39,330 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 13:09:39,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 13:09:39,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 13:09:39,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 13:09:39,330 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 13:09:39,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 13:09:39,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 13:09:39,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 13:09:39,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 13:09:39,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 13:09:39,332 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 13:09:39,332 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 13:09:39,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 13:09:39,332 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 13:09:39,332 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 13:09:39,332 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_a1ff9320-872f-4805-9734-593259aa7831/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 [2019-12-07 13:09:39,501 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 13:09:39,511 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 13:09:39,514 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 13:09:39,515 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 13:09:39,515 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 13:09:39,516 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a1ff9320-872f-4805-9734-593259aa7831/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float2.c [2019-12-07 13:09:39,554 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a1ff9320-872f-4805-9734-593259aa7831/bin/uautomizer/data/efc7507e9/700b6461c3264827b47458bc7d7b5fc7/FLAG1652ec0cf [2019-12-07 13:09:39,885 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 13:09:39,886 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a1ff9320-872f-4805-9734-593259aa7831/sv-benchmarks/c/floats-cbmc-regression/float2.c [2019-12-07 13:09:39,890 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a1ff9320-872f-4805-9734-593259aa7831/bin/uautomizer/data/efc7507e9/700b6461c3264827b47458bc7d7b5fc7/FLAG1652ec0cf [2019-12-07 13:09:40,326 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a1ff9320-872f-4805-9734-593259aa7831/bin/uautomizer/data/efc7507e9/700b6461c3264827b47458bc7d7b5fc7 [2019-12-07 13:09:40,329 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 13:09:40,330 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 13:09:40,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 13:09:40,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 13:09:40,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 13:09:40,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:09:40" (1/1) ... [2019-12-07 13:09:40,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@447048ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:40, skipping insertion in model container [2019-12-07 13:09:40,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:09:40" (1/1) ... [2019-12-07 13:09:40,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 13:09:40,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 13:09:40,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:09:40,456 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 13:09:40,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:09:40,475 INFO L208 MainTranslator]: Completed translation [2019-12-07 13:09:40,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:40 WrapperNode [2019-12-07 13:09:40,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 13:09:40,476 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 13:09:40,476 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 13:09:40,476 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 13:09:40,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:40" (1/1) ... [2019-12-07 13:09:40,486 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:40" (1/1) ... [2019-12-07 13:09:40,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 13:09:40,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 13:09:40,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 13:09:40,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 13:09:40,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:40" (1/1) ... [2019-12-07 13:09:40,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:40" (1/1) ... [2019-12-07 13:09:40,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:40" (1/1) ... [2019-12-07 13:09:40,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:40" (1/1) ... [2019-12-07 13:09:40,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:40" (1/1) ... [2019-12-07 13:09:40,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:40" (1/1) ... [2019-12-07 13:09:40,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:40" (1/1) ... [2019-12-07 13:09:40,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 13:09:40,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 13:09:40,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 13:09:40,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 13:09:40,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1ff9320-872f-4805-9734-593259aa7831/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 [2019-12-07 13:09:40,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 13:09:40,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 13:09:40,782 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 13:09:40,782 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 13:09:40,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:09:40 BoogieIcfgContainer [2019-12-07 13:09:40,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 13:09:40,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 13:09:40,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 13:09:40,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 13:09:40,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:09:40" (1/3) ... [2019-12-07 13:09:40,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33287605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:09:40, skipping insertion in model container [2019-12-07 13:09:40,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:40" (2/3) ... [2019-12-07 13:09:40,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33287605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:09:40, skipping insertion in model container [2019-12-07 13:09:40,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:09:40" (3/3) ... [2019-12-07 13:09:40,788 INFO L109 eAbstractionObserver]: Analyzing ICFG float2.c [2019-12-07 13:09:40,794 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 13:09:40,798 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-12-07 13:09:40,806 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 13:09:40,820 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 13:09:40,820 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 13:09:40,820 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 13:09:40,820 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 13:09:40,820 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 13:09:40,820 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 13:09:40,821 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 13:09:40,821 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 13:09:40,830 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-12-07 13:09:40,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 13:09:40,833 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:09:40,834 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 13:09:40,834 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:09:40,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:09:40,837 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2019-12-07 13:09:40,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 13:09:40,844 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062598146] [2019-12-07 13:09:40,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1ff9320-872f-4805-9734-593259aa7831/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 [2019-12-07 13:09:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:09:40,879 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 13:09:40,882 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:09:40,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:09:40,923 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:09:41,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:09:41,076 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062598146] [2019-12-07 13:09:41,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:09:41,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-12-07 13:09:41,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071428347] [2019-12-07 13:09:41,081 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 13:09:41,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 13:09:41,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:09:41,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:09:41,091 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2019-12-07 13:09:41,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:09:41,167 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2019-12-07 13:09:41,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:09:41,168 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-07 13:09:41,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:09:41,175 INFO L225 Difference]: With dead ends: 35 [2019-12-07 13:09:41,175 INFO L226 Difference]: Without dead ends: 15 [2019-12-07 13:09:41,177 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:09:41,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-12-07 13:09:41,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-12-07 13:09:41,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 13:09:41,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2019-12-07 13:09:41,198 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 4 [2019-12-07 13:09:41,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:09:41,198 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2019-12-07 13:09:41,198 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 13:09:41,198 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2019-12-07 13:09:41,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 13:09:41,198 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:09:41,199 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 13:09:41,399 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 13:09:41,400 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:09:41,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:09:41,401 INFO L82 PathProgramCache]: Analyzing trace with hash 889629862, now seen corresponding path program 1 times [2019-12-07 13:09:41,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 13:09:41,402 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536227579] [2019-12-07 13:09:41,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1ff9320-872f-4805-9734-593259aa7831/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 [2019-12-07 13:09:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:09:41,451 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 13:09:41,451 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:09:41,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:09:41,462 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:09:41,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:09:41,470 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536227579] [2019-12-07 13:09:41,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:09:41,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-12-07 13:09:41,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637530634] [2019-12-07 13:09:41,471 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 13:09:41,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 13:09:41,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:09:41,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:09:41,472 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 3 states. [2019-12-07 13:09:41,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:09:41,523 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2019-12-07 13:09:41,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:09:41,523 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-12-07 13:09:41,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:09:41,524 INFO L225 Difference]: With dead ends: 15 [2019-12-07 13:09:41,524 INFO L226 Difference]: Without dead ends: 13 [2019-12-07 13:09:41,524 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 [2019-12-07 13:09:41,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-12-07 13:09:41,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-12-07 13:09:41,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-12-07 13:09:41,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2019-12-07 13:09:41,526 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 6 [2019-12-07 13:09:41,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:09:41,526 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2019-12-07 13:09:41,527 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 13:09:41,527 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2019-12-07 13:09:41,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 13:09:41,527 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:09:41,527 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:09:41,727 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 13:09:41,728 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:09:41,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:09:41,729 INFO L82 PathProgramCache]: Analyzing trace with hash 235930184, now seen corresponding path program 1 times [2019-12-07 13:09:41,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 13:09:41,730 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127841942] [2019-12-07 13:09:41,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1ff9320-872f-4805-9734-593259aa7831/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 [2019-12-07 13:09:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:09:41,762 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 13:09:41,763 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:09:41,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:09:41,775 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:09:41,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:09:41,784 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127841942] [2019-12-07 13:09:41,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:09:41,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-12-07 13:09:41,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901271080] [2019-12-07 13:09:41,785 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 13:09:41,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 13:09:41,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:09:41,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:09:41,785 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand 3 states. [2019-12-07 13:09:41,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:09:41,861 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2019-12-07 13:09:41,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:09:41,862 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-07 13:09:41,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:09:41,862 INFO L225 Difference]: With dead ends: 13 [2019-12-07 13:09:41,862 INFO L226 Difference]: Without dead ends: 11 [2019-12-07 13:09:41,863 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 [2019-12-07 13:09:41,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-12-07 13:09:41,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-12-07 13:09:41,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-07 13:09:41,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2019-12-07 13:09:41,865 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 8 [2019-12-07 13:09:41,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:09:41,865 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2019-12-07 13:09:41,865 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 13:09:41,865 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2019-12-07 13:09:41,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 13:09:41,866 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:09:41,866 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:09:42,066 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 13:09:42,067 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:09:42,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:09:42,068 INFO L82 PathProgramCache]: Analyzing trace with hash -904234870, now seen corresponding path program 1 times [2019-12-07 13:09:42,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 13:09:42,069 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1434594673] [2019-12-07 13:09:42,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1ff9320-872f-4805-9734-593259aa7831/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 [2019-12-07 13:09:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:09:42,121 INFO L264 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 13:09:42,122 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:09:42,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:09:42,136 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:09:42,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:09:42,144 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1434594673] [2019-12-07 13:09:42,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:09:42,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-12-07 13:09:42,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521710572] [2019-12-07 13:09:42,144 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 13:09:42,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 13:09:42,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:09:42,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:09:42,145 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 3 states. [2019-12-07 13:09:42,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:09:42,200 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2019-12-07 13:09:42,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:09:42,200 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-07 13:09:42,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:09:42,201 INFO L225 Difference]: With dead ends: 11 [2019-12-07 13:09:42,201 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 13:09:42,201 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 [2019-12-07 13:09:42,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 13:09:42,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 13:09:42,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 13:09:42,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 13:09:42,202 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-12-07 13:09:42,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:09:42,202 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 13:09:42,202 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 13:09:42,202 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 13:09:42,202 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 13:09:42,403 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 13:09:42,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 13:09:42,415 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 13:09:42,416 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2019-12-07 13:09:42,416 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2019-12-07 13:09:42,416 INFO L246 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2019-12-07 13:09:42,417 INFO L246 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2019-12-07 13:09:42,417 INFO L246 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2019-12-07 13:09:42,417 INFO L246 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2019-12-07 13:09:42,417 INFO L246 CegarLoopResult]: For program point L17-3(line 17) no Hoare annotation was computed. [2019-12-07 13:09:42,418 INFO L246 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2019-12-07 13:09:42,418 INFO L246 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2019-12-07 13:09:42,418 INFO L246 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2019-12-07 13:09:42,419 INFO L246 CegarLoopResult]: For program point L3(lines 3 22) no Hoare annotation was computed. [2019-12-07 13:09:42,419 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-12-07 13:09:42,419 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 13:09:42,419 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 13:09:42,420 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2019-12-07 13:09:42,420 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2019-12-07 13:09:42,420 INFO L246 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2019-12-07 13:09:42,421 INFO L246 CegarLoopResult]: For program point L10-1(line 10) no Hoare annotation was computed. [2019-12-07 13:09:42,421 INFO L246 CegarLoopResult]: For program point L10-3(line 10) no Hoare annotation was computed. [2019-12-07 13:09:42,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:09:42 BoogieIcfgContainer [2019-12-07 13:09:42,431 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 13:09:42,431 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 13:09:42,431 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 13:09:42,432 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 13:09:42,432 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:09:40" (3/4) ... [2019-12-07 13:09:42,435 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 13:09:42,442 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 13:09:42,442 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 13:09:42,442 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 13:09:42,468 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a1ff9320-872f-4805-9734-593259aa7831/bin/uautomizer/witness.graphml [2019-12-07 13:09:42,468 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 13:09:42,469 INFO L168 Benchmark]: Toolchain (without parser) took 2139.44 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 952.4 MB in the beginning and 1.0 GB in the end (delta: -72.3 MB). Peak memory consumption was 47.8 MB. Max. memory is 11.5 GB. [2019-12-07 13:09:42,469 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:09:42,470 INFO L168 Benchmark]: CACSL2BoogieTranslator took 145.42 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 13:09:42,470 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.72 ms. Allocated memory is still 1.0 GB. Free memory is still 941.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:09:42,470 INFO L168 Benchmark]: Boogie Preprocessor took 44.94 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -166.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. [2019-12-07 13:09:42,471 INFO L168 Benchmark]: RCFGBuilder took 241.18 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. [2019-12-07 13:09:42,471 INFO L168 Benchmark]: TraceAbstraction took 1647.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 59.0 MB). Peak memory consumption was 59.0 MB. Max. memory is 11.5 GB. [2019-12-07 13:09:42,471 INFO L168 Benchmark]: Witness Printer took 36.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-12-07 13:09:42,473 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 145.42 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 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 20.72 ms. Allocated memory is still 1.0 GB. Free memory is still 941.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 44.94 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -166.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 241.18 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1647.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 59.0 MB). Peak memory consumption was 59.0 MB. Max. memory is 11.5 GB. * Witness Printer took 36.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. 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: 1.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, 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, 0.2s 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...