./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_bec58436-c0fa-42e6-b304-20328e961b4d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_bec58436-c0fa-42e6-b304-20328e961b4d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bec58436-c0fa-42e6-b304-20328e961b4d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bec58436-c0fa-42e6-b304-20328e961b4d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_bec58436-c0fa-42e6-b304-20328e961b4d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bec58436-c0fa-42e6-b304-20328e961b4d/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_bec58436-c0fa-42e6-b304-20328e961b4d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_bec58436-c0fa-42e6-b304-20328e961b4d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bec58436-c0fa-42e6-b304-20328e961b4d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bec58436-c0fa-42e6-b304-20328e961b4d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_bec58436-c0fa-42e6-b304-20328e961b4d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bec58436-c0fa-42e6-b304-20328e961b4d/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-cad4683 [2019-11-16 00:38:53,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-16 00:38:53,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-16 00:38:53,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-16 00:38:53,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-16 00:38:53,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-16 00:38:53,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-16 00:38:53,812 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-16 00:38:53,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-16 00:38:53,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-16 00:38:53,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-16 00:38:53,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-16 00:38:53,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-16 00:38:53,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-16 00:38:53,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-16 00:38:53,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-16 00:38:53,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-16 00:38:53,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-16 00:38:53,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-16 00:38:53,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-16 00:38:53,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-16 00:38:53,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-16 00:38:53,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-16 00:38:53,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-16 00:38:53,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-16 00:38:53,848 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-16 00:38:53,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-16 00:38:53,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-16 00:38:53,850 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-16 00:38:53,851 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-16 00:38:53,851 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-16 00:38:53,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-16 00:38:53,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-16 00:38:53,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-16 00:38:53,854 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-16 00:38:53,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-16 00:38:53,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-16 00:38:53,855 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-16 00:38:53,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-16 00:38:53,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-16 00:38:53,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-16 00:38:53,858 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bec58436-c0fa-42e6-b304-20328e961b4d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-16 00:38:53,881 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-16 00:38:53,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-16 00:38:53,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-16 00:38:53,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-16 00:38:53,883 INFO L138 SettingsManager]: * Use SBE=true [2019-11-16 00:38:53,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-16 00:38:53,883 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-16 00:38:53,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-16 00:38:53,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-16 00:38:53,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-16 00:38:53,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-16 00:38:53,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-16 00:38:53,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-16 00:38:53,886 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-16 00:38:53,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-16 00:38:53,886 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-16 00:38:53,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-16 00:38:53,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-16 00:38:53,887 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-16 00:38:53,887 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-16 00:38:53,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-16 00:38:53,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 00:38:53,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-16 00:38:53,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-16 00:38:53,888 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-16 00:38:53,889 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-16 00:38:53,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-16 00:38:53,889 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-16 00:38:53,889 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_bec58436-c0fa-42e6-b304-20328e961b4d/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 [2019-11-16 00:38:53,917 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-16 00:38:53,928 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-16 00:38:53,931 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-16 00:38:53,932 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-16 00:38:53,932 INFO L275 PluginConnector]: CDTParser initialized [2019-11-16 00:38:53,933 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bec58436-c0fa-42e6-b304-20328e961b4d/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float2.c [2019-11-16 00:38:53,987 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bec58436-c0fa-42e6-b304-20328e961b4d/bin/uautomizer/data/993819bfb/f3fee63ab4c240b2bfe6d29ed6269f29/FLAG703f128f4 [2019-11-16 00:38:54,413 INFO L306 CDTParser]: Found 1 translation units. [2019-11-16 00:38:54,416 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bec58436-c0fa-42e6-b304-20328e961b4d/sv-benchmarks/c/floats-cbmc-regression/float2.c [2019-11-16 00:38:54,423 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bec58436-c0fa-42e6-b304-20328e961b4d/bin/uautomizer/data/993819bfb/f3fee63ab4c240b2bfe6d29ed6269f29/FLAG703f128f4 [2019-11-16 00:38:54,444 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bec58436-c0fa-42e6-b304-20328e961b4d/bin/uautomizer/data/993819bfb/f3fee63ab4c240b2bfe6d29ed6269f29 [2019-11-16 00:38:54,447 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-16 00:38:54,448 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-16 00:38:54,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-16 00:38:54,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-16 00:38:54,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-16 00:38:54,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:38:54" (1/1) ... [2019-11-16 00:38:54,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65b8ae3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:54, skipping insertion in model container [2019-11-16 00:38:54,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:38:54" (1/1) ... [2019-11-16 00:38:54,465 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-16 00:38:54,486 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-16 00:38:54,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:38:54,689 INFO L188 MainTranslator]: Completed pre-run [2019-11-16 00:38:54,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:38:54,779 INFO L192 MainTranslator]: Completed translation [2019-11-16 00:38:54,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:54 WrapperNode [2019-11-16 00:38:54,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-16 00:38:54,781 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-16 00:38:54,781 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-16 00:38:54,781 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-16 00:38:54,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:54" (1/1) ... [2019-11-16 00:38:54,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:54" (1/1) ... [2019-11-16 00:38:54,814 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-16 00:38:54,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-16 00:38:54,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-16 00:38:54,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-16 00:38:54,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:54" (1/1) ... [2019-11-16 00:38:54,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:54" (1/1) ... [2019-11-16 00:38:54,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:54" (1/1) ... [2019-11-16 00:38:54,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:54" (1/1) ... [2019-11-16 00:38:54,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:54" (1/1) ... [2019-11-16 00:38:54,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:54" (1/1) ... [2019-11-16 00:38:54,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:54" (1/1) ... [2019-11-16 00:38:54,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-16 00:38:54,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-16 00:38:54,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-16 00:38:54,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-16 00:38:54,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bec58436-c0fa-42e6-b304-20328e961b4d/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 [2019-11-16 00:38:54,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-16 00:38:54,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-16 00:38:55,089 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-16 00:38:55,090 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-16 00:38:55,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:38:55 BoogieIcfgContainer [2019-11-16 00:38:55,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-16 00:38:55,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-16 00:38:55,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-16 00:38:55,095 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-16 00:38:55,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:38:54" (1/3) ... [2019-11-16 00:38:55,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d92c2c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:38:55, skipping insertion in model container [2019-11-16 00:38:55,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:54" (2/3) ... [2019-11-16 00:38:55,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d92c2c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:38:55, skipping insertion in model container [2019-11-16 00:38:55,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:38:55" (3/3) ... [2019-11-16 00:38:55,098 INFO L109 eAbstractionObserver]: Analyzing ICFG float2.c [2019-11-16 00:38:55,110 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-16 00:38:55,129 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-16 00:38:55,140 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-16 00:38:55,189 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-16 00:38:55,190 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-16 00:38:55,190 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-16 00:38:55,203 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-16 00:38:55,204 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-16 00:38:55,204 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-16 00:38:55,204 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-16 00:38:55,204 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-16 00:38:55,218 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-11-16 00:38:55,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-16 00:38:55,236 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:38:55,237 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-16 00:38:55,239 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:38:55,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:38:55,245 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-11-16 00:38:55,253 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:38:55,253 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992992944] [2019-11-16 00:38:55,254 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:38:55,254 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:38:55,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:38:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:38:55,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:38:55,378 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:38:55,379 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-16 00:38:55,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:38:55 BoogieIcfgContainer [2019-11-16 00:38:55,392 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-16 00:38:55,393 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-16 00:38:55,393 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-16 00:38:55,393 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-16 00:38:55,394 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:38:55" (3/4) ... [2019-11-16 00:38:55,398 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-16 00:38:55,398 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-16 00:38:55,401 INFO L168 Benchmark]: Toolchain (without parser) took 951.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -160.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:38:55,402 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:38:55,403 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -189.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-16 00:38:55,404 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.12 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. [2019-11-16 00:38:55,404 INFO L168 Benchmark]: Boogie Preprocessor took 23.25 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. [2019-11-16 00:38:55,405 INFO L168 Benchmark]: RCFGBuilder took 251.24 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: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-11-16 00:38:55,406 INFO L168 Benchmark]: TraceAbstraction took 300.52 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: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-16 00:38:55,406 INFO L168 Benchmark]: Witness Printer took 5.38 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. [2019-11-16 00:38:55,410 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 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 331.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -189.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.12 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. * Boogie Preprocessor took 23.25 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. * RCFGBuilder took 251.24 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: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 300.52 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: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Witness Printer took 5.38 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: 0.2s, 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-cad4683 [2019-11-16 00:38:58,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-16 00:38:58,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-16 00:38:58,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-16 00:38:58,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-16 00:38:58,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-16 00:38:58,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-16 00:38:58,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-16 00:38:58,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-16 00:38:58,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-16 00:38:58,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-16 00:38:58,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-16 00:38:58,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-16 00:38:58,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-16 00:38:58,099 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-16 00:38:58,100 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-16 00:38:58,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-16 00:38:58,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-16 00:38:58,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-16 00:38:58,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-16 00:38:58,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-16 00:38:58,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-16 00:38:58,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-16 00:38:58,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-16 00:38:58,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-16 00:38:58,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-16 00:38:58,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-16 00:38:58,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-16 00:38:58,126 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-16 00:38:58,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-16 00:38:58,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-16 00:38:58,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-16 00:38:58,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-16 00:38:58,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-16 00:38:58,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-16 00:38:58,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-16 00:38:58,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-16 00:38:58,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-16 00:38:58,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-16 00:38:58,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-16 00:38:58,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-16 00:38:58,136 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bec58436-c0fa-42e6-b304-20328e961b4d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-16 00:38:58,153 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-16 00:38:58,154 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-16 00:38:58,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-16 00:38:58,155 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-16 00:38:58,156 INFO L138 SettingsManager]: * Use SBE=true [2019-11-16 00:38:58,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-16 00:38:58,156 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-16 00:38:58,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-16 00:38:58,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-16 00:38:58,157 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-16 00:38:58,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-16 00:38:58,158 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-16 00:38:58,158 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-16 00:38:58,158 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-16 00:38:58,159 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-16 00:38:58,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-16 00:38:58,159 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-16 00:38:58,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-16 00:38:58,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-16 00:38:58,160 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-16 00:38:58,161 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-16 00:38:58,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-16 00:38:58,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 00:38:58,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-16 00:38:58,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-16 00:38:58,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-16 00:38:58,163 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-16 00:38:58,163 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-16 00:38:58,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-16 00:38:58,163 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-16 00:38:58,164 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_bec58436-c0fa-42e6-b304-20328e961b4d/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 [2019-11-16 00:38:58,201 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-16 00:38:58,214 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-16 00:38:58,218 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-16 00:38:58,219 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-16 00:38:58,220 INFO L275 PluginConnector]: CDTParser initialized [2019-11-16 00:38:58,221 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bec58436-c0fa-42e6-b304-20328e961b4d/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float2.c [2019-11-16 00:38:58,280 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bec58436-c0fa-42e6-b304-20328e961b4d/bin/uautomizer/data/a974ffe54/9d7c56ecba3d4233a4deca6cf11ab23c/FLAGd1e3600fe [2019-11-16 00:38:58,661 INFO L306 CDTParser]: Found 1 translation units. [2019-11-16 00:38:58,662 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bec58436-c0fa-42e6-b304-20328e961b4d/sv-benchmarks/c/floats-cbmc-regression/float2.c [2019-11-16 00:38:58,668 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bec58436-c0fa-42e6-b304-20328e961b4d/bin/uautomizer/data/a974ffe54/9d7c56ecba3d4233a4deca6cf11ab23c/FLAGd1e3600fe [2019-11-16 00:38:59,030 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bec58436-c0fa-42e6-b304-20328e961b4d/bin/uautomizer/data/a974ffe54/9d7c56ecba3d4233a4deca6cf11ab23c [2019-11-16 00:38:59,033 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-16 00:38:59,035 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-16 00:38:59,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-16 00:38:59,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-16 00:38:59,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-16 00:38:59,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:38:59" (1/1) ... [2019-11-16 00:38:59,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23172392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:59, skipping insertion in model container [2019-11-16 00:38:59,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:38:59" (1/1) ... [2019-11-16 00:38:59,049 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-16 00:38:59,062 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-16 00:38:59,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:38:59,249 INFO L188 MainTranslator]: Completed pre-run [2019-11-16 00:38:59,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:38:59,291 INFO L192 MainTranslator]: Completed translation [2019-11-16 00:38:59,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:59 WrapperNode [2019-11-16 00:38:59,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-16 00:38:59,292 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-16 00:38:59,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-16 00:38:59,293 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-16 00:38:59,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:59" (1/1) ... [2019-11-16 00:38:59,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:59" (1/1) ... [2019-11-16 00:38:59,410 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-16 00:38:59,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-16 00:38:59,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-16 00:38:59,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-16 00:38:59,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:59" (1/1) ... [2019-11-16 00:38:59,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:59" (1/1) ... [2019-11-16 00:38:59,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:59" (1/1) ... [2019-11-16 00:38:59,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:59" (1/1) ... [2019-11-16 00:38:59,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:59" (1/1) ... [2019-11-16 00:38:59,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:59" (1/1) ... [2019-11-16 00:38:59,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:59" (1/1) ... [2019-11-16 00:38:59,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-16 00:38:59,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-16 00:38:59,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-16 00:38:59,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-16 00:38:59,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bec58436-c0fa-42e6-b304-20328e961b4d/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 [2019-11-16 00:38:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-16 00:38:59,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-16 00:38:59,768 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-16 00:38:59,768 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-16 00:38:59,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:38:59 BoogieIcfgContainer [2019-11-16 00:38:59,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-16 00:38:59,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-16 00:38:59,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-16 00:38:59,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-16 00:38:59,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:38:59" (1/3) ... [2019-11-16 00:38:59,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7decae53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:38:59, skipping insertion in model container [2019-11-16 00:38:59,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:59" (2/3) ... [2019-11-16 00:38:59,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7decae53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:38:59, skipping insertion in model container [2019-11-16 00:38:59,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:38:59" (3/3) ... [2019-11-16 00:38:59,788 INFO L109 eAbstractionObserver]: Analyzing ICFG float2.c [2019-11-16 00:38:59,809 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-16 00:38:59,815 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-16 00:38:59,825 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-16 00:38:59,861 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-16 00:38:59,861 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-16 00:38:59,861 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-16 00:38:59,862 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-16 00:38:59,862 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-16 00:38:59,862 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-16 00:38:59,862 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-16 00:38:59,862 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-16 00:38:59,885 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-11-16 00:38:59,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-16 00:38:59,893 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:38:59,894 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-16 00:38:59,896 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:38:59,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:38:59,909 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-11-16 00:38:59,920 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-16 00:38:59,920 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1990144160] [2019-11-16 00:38:59,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bec58436-c0fa-42e6-b304-20328e961b4d/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 [2019-11-16 00:38:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:38:59,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-16 00:38:59,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:39:00,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:00,005 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-16 00:39:00,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:00,184 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1990144160] [2019-11-16 00:39:00,184 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:39:00,185 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-16 00:39:00,185 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556475117] [2019-11-16 00:39:00,189 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-16 00:39:00,190 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-16 00:39:00,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-16 00:39:00,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:39:00,204 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2019-11-16 00:39:00,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:39:00,273 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2019-11-16 00:39:00,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-16 00:39:00,275 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-11-16 00:39:00,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:39:00,287 INFO L225 Difference]: With dead ends: 34 [2019-11-16 00:39:00,287 INFO L226 Difference]: Without dead ends: 14 [2019-11-16 00:39:00,290 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:39:00,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-16 00:39:00,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-16 00:39:00,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-16 00:39:00,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2019-11-16 00:39:00,326 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 3 [2019-11-16 00:39:00,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:39:00,327 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2019-11-16 00:39:00,327 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-16 00:39:00,332 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2019-11-16 00:39:00,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-16 00:39:00,333 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:39:00,333 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-16 00:39:00,548 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-16 00:39:00,551 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:39:00,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:39:00,551 INFO L82 PathProgramCache]: Analyzing trace with hash 29801027, now seen corresponding path program 1 times [2019-11-16 00:39:00,551 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-16 00:39:00,552 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [688302530] [2019-11-16 00:39:00,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bec58436-c0fa-42e6-b304-20328e961b4d/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 [2019-11-16 00:39:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:39:00,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-16 00:39:00,586 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:39:00,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:00,601 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-16 00:39:00,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:00,614 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [688302530] [2019-11-16 00:39:00,615 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:39:00,615 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-16 00:39:00,615 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180399587] [2019-11-16 00:39:00,617 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-16 00:39:00,617 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-16 00:39:00,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-16 00:39:00,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:39:00,618 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand 3 states. [2019-11-16 00:39:00,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:39:00,628 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2019-11-16 00:39:00,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-16 00:39:00,629 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-16 00:39:00,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:39:00,630 INFO L225 Difference]: With dead ends: 14 [2019-11-16 00:39:00,630 INFO L226 Difference]: Without dead ends: 12 [2019-11-16 00:39:00,633 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:39:00,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-16 00:39:00,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-16 00:39:00,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-16 00:39:00,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2019-11-16 00:39:00,637 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 5 [2019-11-16 00:39:00,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:39:00,637 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2019-11-16 00:39:00,637 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-16 00:39:00,638 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2019-11-16 00:39:00,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-16 00:39:00,638 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:39:00,638 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:39:00,840 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-16 00:39:00,847 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:39:00,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:39:00,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1425859451, now seen corresponding path program 1 times [2019-11-16 00:39:00,850 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-16 00:39:00,854 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14160219] [2019-11-16 00:39:00,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bec58436-c0fa-42e6-b304-20328e961b4d/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 [2019-11-16 00:39:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:39:00,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-16 00:39:00,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:39:00,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:00,914 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-16 00:39:00,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:00,921 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14160219] [2019-11-16 00:39:00,921 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:39:00,921 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-16 00:39:00,922 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37395854] [2019-11-16 00:39:00,922 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-16 00:39:00,922 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-16 00:39:00,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-16 00:39:00,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:39:00,923 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 3 states. [2019-11-16 00:39:00,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:39:00,965 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2019-11-16 00:39:00,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-16 00:39:00,966 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-16 00:39:00,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:39:00,966 INFO L225 Difference]: With dead ends: 12 [2019-11-16 00:39:00,966 INFO L226 Difference]: Without dead ends: 10 [2019-11-16 00:39:00,967 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:39:00,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-16 00:39:00,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-16 00:39:00,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-16 00:39:00,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2019-11-16 00:39:00,969 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 7 [2019-11-16 00:39:00,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:39:00,970 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2019-11-16 00:39:00,970 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-16 00:39:00,970 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2019-11-16 00:39:00,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-16 00:39:00,970 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:39:00,971 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:39:01,175 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-16 00:39:01,176 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:39:01,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:39:01,176 INFO L82 PathProgramCache]: Analyzing trace with hash -156240025, now seen corresponding path program 1 times [2019-11-16 00:39:01,177 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-16 00:39:01,177 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242675842] [2019-11-16 00:39:01,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bec58436-c0fa-42e6-b304-20328e961b4d/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 [2019-11-16 00:39:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:39:01,222 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-16 00:39:01,223 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:39:01,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:01,234 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-16 00:39:01,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:01,247 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242675842] [2019-11-16 00:39:01,248 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:39:01,248 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-16 00:39:01,248 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918890277] [2019-11-16 00:39:01,249 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-16 00:39:01,249 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-16 00:39:01,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-16 00:39:01,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:39:01,249 INFO L87 Difference]: Start difference. First operand 10 states and 9 transitions. Second operand 3 states. [2019-11-16 00:39:01,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:39:01,303 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2019-11-16 00:39:01,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-16 00:39:01,304 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-16 00:39:01,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:39:01,305 INFO L225 Difference]: With dead ends: 10 [2019-11-16 00:39:01,305 INFO L226 Difference]: Without dead ends: 0 [2019-11-16 00:39:01,306 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:39:01,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-16 00:39:01,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-16 00:39:01,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-16 00:39:01,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-16 00:39:01,307 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2019-11-16 00:39:01,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:39:01,307 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-16 00:39:01,307 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-16 00:39:01,307 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-16 00:39:01,308 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-16 00:39:01,508 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-16 00:39:01,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-16 00:39:01,516 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-16 00:39:01,516 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2019-11-16 00:39:01,517 INFO L443 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-11-16 00:39:01,517 INFO L443 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2019-11-16 00:39:01,517 INFO L443 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-11-16 00:39:01,517 INFO L443 ceAbstractionStarter]: For program point L17-1(line 17) no Hoare annotation was computed. [2019-11-16 00:39:01,517 INFO L443 ceAbstractionStarter]: For program point L17-3(line 17) no Hoare annotation was computed. [2019-11-16 00:39:01,518 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2019-11-16 00:39:01,518 INFO L443 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2019-11-16 00:39:01,518 INFO L443 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2019-11-16 00:39:01,518 INFO L443 ceAbstractionStarter]: For program point L13-3(line 13) no Hoare annotation was computed. [2019-11-16 00:39:01,519 INFO L443 ceAbstractionStarter]: For program point L3(lines 3 22) no Hoare annotation was computed. [2019-11-16 00:39:01,519 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-16 00:39:01,519 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-16 00:39:01,519 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2019-11-16 00:39:01,519 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2019-11-16 00:39:01,519 INFO L443 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2019-11-16 00:39:01,519 INFO L443 ceAbstractionStarter]: For program point L10-1(line 10) no Hoare annotation was computed. [2019-11-16 00:39:01,520 INFO L443 ceAbstractionStarter]: For program point L10-3(line 10) no Hoare annotation was computed. [2019-11-16 00:39:01,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:39:01 BoogieIcfgContainer [2019-11-16 00:39:01,523 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-16 00:39:01,524 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-16 00:39:01,524 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-16 00:39:01,524 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-16 00:39:01,524 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:38:59" (3/4) ... [2019-11-16 00:39:01,528 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-16 00:39:01,539 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-16 00:39:01,539 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-16 00:39:01,581 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_bec58436-c0fa-42e6-b304-20328e961b4d/bin/uautomizer/witness.graphml [2019-11-16 00:39:01,581 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-16 00:39:01,583 INFO L168 Benchmark]: Toolchain (without parser) took 2548.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -103.8 MB). Peak memory consumption was 40.4 MB. Max. memory is 11.5 GB. [2019-11-16 00:39:01,584 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:39:01,584 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.29 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-16 00:39:01,585 INFO L168 Benchmark]: Boogie Procedure Inliner took 117.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -199.9 MB). Peak memory consumption was 12.3 MB. Max. memory is 11.5 GB. [2019-11-16 00:39:01,586 INFO L168 Benchmark]: Boogie Preprocessor took 36.81 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-16 00:39:01,587 INFO L168 Benchmark]: RCFGBuilder took 322.61 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: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-16 00:39:01,587 INFO L168 Benchmark]: TraceAbstraction took 1752.58 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: 60.9 MB). Peak memory consumption was 60.9 MB. Max. memory is 11.5 GB. [2019-11-16 00:39:01,588 INFO L168 Benchmark]: Witness Printer took 57.86 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. [2019-11-16 00:39:01,591 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 256.29 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.3 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 117.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -199.9 MB). Peak memory consumption was 12.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.81 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 322.61 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: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1752.58 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: 60.9 MB). Peak memory consumption was 60.9 MB. Max. memory is 11.5 GB. * Witness Printer took 57.86 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: 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 - PositiveResult [Line: 13]: 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, 19 locations, 4 error locations. Result: SAFE, OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 40 SDtfs, 14 SDslu, 10 SDs, 0 SdLazy, 18 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 8 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 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: 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, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 464 SizeOfPredicates, 4 NumberOfNonLiveVariables, 32 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...