./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows 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/working_dir_99a9ff90-c98e-4677-9102-9a5cd4857c99/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_99a9ff90-c98e-4677-9102-9a5cd4857c99/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_99a9ff90-c98e-4677-9102-9a5cd4857c99/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_99a9ff90-c98e-4677-9102-9a5cd4857c99/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_99a9ff90-c98e-4677-9102-9a5cd4857c99/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_99a9ff90-c98e-4677-9102-9a5cd4857c99/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash bbffee41c5a3e36a7439f4e96877154fc3cf2a16 ....................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:55:28,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:55:28,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:55:28,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:55:28,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:55:28,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:55:28,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:55:28,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:55:28,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:55:28,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:55:28,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:55:28,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:55:28,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:55:28,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:55:28,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:55:28,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:55:28,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:55:28,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:55:28,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:55:28,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:55:28,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:55:28,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:55:28,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:55:28,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:55:28,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:55:28,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:55:28,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:55:28,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:55:28,884 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:55:28,885 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:55:28,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:55:28,886 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:55:28,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:55:28,887 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:55:28,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:55:28,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:55:28,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:55:28,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:55:28,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:55:28,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:55:28,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:55:28,891 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_99a9ff90-c98e-4677-9102-9a5cd4857c99/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-10-22 08:55:28,902 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:55:28,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:55:28,903 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:55:28,904 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:55:28,904 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:55:28,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:55:28,904 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:55:28,904 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:55:28,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:55:28,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:55:28,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:55:28,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:55:28,905 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-10-22 08:55:28,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:55:28,906 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:55:28,906 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:55:28,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:55:28,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:55:28,906 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:55:28,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:55:28,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:55:28,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:55:28,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:55:28,907 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:55:28,907 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:55:28,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:55:28,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:55:28,907 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/working_dir_99a9ff90-c98e-4677-9102-9a5cd4857c99/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 ! overflow) ) 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bbffee41c5a3e36a7439f4e96877154fc3cf2a16 [2019-10-22 08:55:28,931 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:55:28,940 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:55:28,943 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:55:28,944 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:55:28,944 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:55:28,945 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_99a9ff90-c98e-4677-9102-9a5cd4857c99/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig1.c [2019-10-22 08:55:28,990 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_99a9ff90-c98e-4677-9102-9a5cd4857c99/bin/uautomizer/data/2d9f42d2a/88ad44fc7d7e418698b4517f523bc8ef/FLAG35e8d2a25 [2019-10-22 08:55:29,345 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:55:29,346 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_99a9ff90-c98e-4677-9102-9a5cd4857c99/sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig1.c [2019-10-22 08:55:29,351 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_99a9ff90-c98e-4677-9102-9a5cd4857c99/bin/uautomizer/data/2d9f42d2a/88ad44fc7d7e418698b4517f523bc8ef/FLAG35e8d2a25 [2019-10-22 08:55:29,362 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_99a9ff90-c98e-4677-9102-9a5cd4857c99/bin/uautomizer/data/2d9f42d2a/88ad44fc7d7e418698b4517f523bc8ef [2019-10-22 08:55:29,364 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:55:29,366 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:55:29,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:29,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:55:29,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:55:29,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:29" (1/1) ... [2019-10-22 08:55:29,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c9b2fa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:29, skipping insertion in model container [2019-10-22 08:55:29,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:29" (1/1) ... [2019-10-22 08:55:29,384 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:55:29,398 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:55:29,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:29,556 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:55:29,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:29,654 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:55:29,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:29 WrapperNode [2019-10-22 08:55:29,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:29,655 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:29,656 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:55:29,656 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:55:29,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:29" (1/1) ... [2019-10-22 08:55:29,669 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:29" (1/1) ... [2019-10-22 08:55:29,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:29,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:55:29,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:55:29,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:55:29,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:29" (1/1) ... [2019-10-22 08:55:29,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:29" (1/1) ... [2019-10-22 08:55:29,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:29" (1/1) ... [2019-10-22 08:55:29,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:29" (1/1) ... [2019-10-22 08:55:29,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:29" (1/1) ... [2019-10-22 08:55:29,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:29" (1/1) ... [2019-10-22 08:55:29,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:29" (1/1) ... [2019-10-22 08:55:29,704 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:55:29,704 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:55:29,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:55:29,705 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:55:29,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_99a9ff90-c98e-4677-9102-9a5cd4857c99/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 [2019-10-22 08:55:29,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:55:29,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:55:29,890 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:55:29,890 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-22 08:55:29,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:29 BoogieIcfgContainer [2019-10-22 08:55:29,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:55:29,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:55:29,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:55:29,895 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:55:29,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:55:29" (1/3) ... [2019-10-22 08:55:29,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ea6d2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:55:29, skipping insertion in model container [2019-10-22 08:55:29,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:29" (2/3) ... [2019-10-22 08:55:29,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ea6d2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:55:29, skipping insertion in model container [2019-10-22 08:55:29,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:29" (3/3) ... [2019-10-22 08:55:29,899 INFO L109 eAbstractionObserver]: Analyzing ICFG Urban-WST2013-Fig1.c [2019-10-22 08:55:29,909 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:55:29,916 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-10-22 08:55:29,924 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-10-22 08:55:29,945 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:55:29,945 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:55:29,946 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:55:29,946 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:55:29,946 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:55:29,946 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:55:29,946 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:55:29,946 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:55:29,959 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-10-22 08:55:29,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-10-22 08:55:29,965 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:29,966 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-10-22 08:55:29,967 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:55:29,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:29,973 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2019-10-22 08:55:29,981 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:29,981 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715079335] [2019-10-22 08:55:29,981 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:29,982 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:29,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:30,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:30,090 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715079335] [2019-10-22 08:55:30,091 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:30,091 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:55:30,091 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290676276] [2019-10-22 08:55:30,095 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:55:30,095 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:30,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:55:30,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:30,106 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2019-10-22 08:55:30,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:30,145 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2019-10-22 08:55:30,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:55:30,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-10-22 08:55:30,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:30,156 INFO L225 Difference]: With dead ends: 16 [2019-10-22 08:55:30,157 INFO L226 Difference]: Without dead ends: 7 [2019-10-22 08:55:30,159 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:30,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-10-22 08:55:30,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2019-10-22 08:55:30,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-10-22 08:55:30,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2019-10-22 08:55:30,193 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 7 transitions. Word has length 4 [2019-10-22 08:55:30,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:30,194 INFO L462 AbstractCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-10-22 08:55:30,195 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:55:30,195 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 7 transitions. [2019-10-22 08:55:30,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 08:55:30,195 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:30,195 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 08:55:30,195 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:55:30,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:30,196 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2019-10-22 08:55:30,196 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:30,196 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487163456] [2019-10-22 08:55:30,196 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:30,196 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:30,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:30,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:30,214 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487163456] [2019-10-22 08:55:30,214 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:30,214 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:55:30,214 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022970324] [2019-10-22 08:55:30,215 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:55:30,216 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:30,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:55:30,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:30,216 INFO L87 Difference]: Start difference. First operand 6 states and 7 transitions. Second operand 3 states. [2019-10-22 08:55:30,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:30,242 INFO L93 Difference]: Finished difference Result 12 states and 16 transitions. [2019-10-22 08:55:30,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:55:30,242 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-10-22 08:55:30,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:30,243 INFO L225 Difference]: With dead ends: 12 [2019-10-22 08:55:30,243 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 08:55:30,244 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:30,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 08:55:30,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 08:55:30,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 08:55:30,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:55:30,244 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2019-10-22 08:55:30,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:30,245 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:55:30,245 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:55:30,245 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:55:30,245 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 08:55:30,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 08:55:30,262 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 08:55:30,262 INFO L443 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-10-22 08:55:30,262 INFO L443 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2019-10-22 08:55:30,262 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2019-10-22 08:55:30,262 INFO L443 ceAbstractionStarter]: For program point L17-2(lines 17 21) no Hoare annotation was computed. [2019-10-22 08:55:30,262 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 08:55:30,262 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 08:55:30,263 INFO L446 ceAbstractionStarter]: At program point L22(lines 14 23) the Hoare annotation is: true [2019-10-22 08:55:30,263 INFO L443 ceAbstractionStarter]: For program point L18(lines 18 20) no Hoare annotation was computed. [2019-10-22 08:55:30,263 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2019-10-22 08:55:30,263 INFO L446 ceAbstractionStarter]: At program point L18-2(lines 17 21) the Hoare annotation is: true [2019-10-22 08:55:30,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:55:30 BoogieIcfgContainer [2019-10-22 08:55:30,270 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:55:30,270 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:55:30,270 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:55:30,270 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:55:30,271 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:29" (3/4) ... [2019-10-22 08:55:30,274 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 08:55:30,291 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 08:55:30,291 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 08:55:30,328 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_99a9ff90-c98e-4677-9102-9a5cd4857c99/bin/uautomizer/witness.graphml [2019-10-22 08:55:30,328 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:55:30,330 INFO L168 Benchmark]: Toolchain (without parser) took 963.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 943.3 MB in the beginning and 1.1 GB in the end (delta: -133.5 MB). Peak memory consumption was 3.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:30,330 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:30,331 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 943.3 MB in the beginning and 1.1 GB in the end (delta: -184.9 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:30,331 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.53 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. [2019-10-22 08:55:30,332 INFO L168 Benchmark]: Boogie Preprocessor took 19.12 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. [2019-10-22 08:55:30,333 INFO L168 Benchmark]: RCFGBuilder took 186.93 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: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:30,334 INFO L168 Benchmark]: TraceAbstraction took 377.60 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: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:30,335 INFO L168 Benchmark]: Witness Printer took 57.74 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:30,338 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 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 288.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 943.3 MB in the beginning and 1.1 GB in the end (delta: -184.9 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.53 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 19.12 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. * RCFGBuilder took 186.93 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: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 377.60 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: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 11.5 GB. * Witness Printer took 57.74 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 2 error locations. Result: SAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 4 SDslu, 3 SDs, 0 SdLazy, 16 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 53 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...