./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-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_86ebf2df-5c56-4f1d-b836-643425a1567e/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_86ebf2df-5c56-4f1d-b836-643425a1567e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_86ebf2df-5c56-4f1d-b836-643425a1567e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_86ebf2df-5c56-4f1d-b836-643425a1567e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_86ebf2df-5c56-4f1d-b836-643425a1567e/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_86ebf2df-5c56-4f1d-b836-643425a1567e/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 16d1f6cd78d7cc073e9077e844c6915079dedfe5 ...................................................................................................................................................................................................................................................................................................... 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 08:55:07,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:55:07,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:55:07,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:55:07,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:55:07,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:55:07,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:55:07,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:55:07,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:55:07,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:55:07,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:55:07,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:55:07,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:55:07,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:55:07,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:55:07,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:55:07,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:55:07,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:55:07,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:55:07,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:55:08,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:55:08,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:55:08,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:55:08,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:55:08,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:55:08,009 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:55:08,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:55:08,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:55:08,011 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:55:08,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:55:08,012 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:55:08,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:55:08,014 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:55:08,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:55:08,016 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:55:08,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:55:08,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:55:08,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:55:08,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:55:08,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:55:08,020 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:55:08,020 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_86ebf2df-5c56-4f1d-b836-643425a1567e/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-10-22 08:55:08,038 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:55:08,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:55:08,039 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:55:08,039 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:55:08,039 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:55:08,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:55:08,040 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:55:08,040 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:55:08,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:55:08,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:55:08,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:55:08,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:55:08,041 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-10-22 08:55:08,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:55:08,041 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:55:08,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:55:08,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:55:08,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:55:08,043 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:55:08,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:55:08,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:55:08,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:55:08,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:55:08,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:55:08,044 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:55:08,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:55:08,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:55:08,045 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_86ebf2df-5c56-4f1d-b836-643425a1567e/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 -> 16d1f6cd78d7cc073e9077e844c6915079dedfe5 [2019-10-22 08:55:08,077 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:55:08,091 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:55:08,095 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:55:08,097 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:55:08,097 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:55:08,098 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_86ebf2df-5c56-4f1d-b836-643425a1567e/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig1.c [2019-10-22 08:55:08,154 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_86ebf2df-5c56-4f1d-b836-643425a1567e/bin/uautomizer/data/6aa2abd97/03c6b840681e422e8275828789762dcd/FLAG015cfd564 [2019-10-22 08:55:08,521 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:55:08,521 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_86ebf2df-5c56-4f1d-b836-643425a1567e/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig1.c [2019-10-22 08:55:08,526 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_86ebf2df-5c56-4f1d-b836-643425a1567e/bin/uautomizer/data/6aa2abd97/03c6b840681e422e8275828789762dcd/FLAG015cfd564 [2019-10-22 08:55:08,536 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_86ebf2df-5c56-4f1d-b836-643425a1567e/bin/uautomizer/data/6aa2abd97/03c6b840681e422e8275828789762dcd [2019-10-22 08:55:08,538 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:55:08,539 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:55:08,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:08,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:55:08,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:55:08,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:08" (1/1) ... [2019-10-22 08:55:08,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48ec373d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:08, skipping insertion in model container [2019-10-22 08:55:08,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:08" (1/1) ... [2019-10-22 08:55:08,553 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:55:08,564 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:55:08,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:08,687 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:55:08,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:08,769 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:55:08,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:08 WrapperNode [2019-10-22 08:55:08,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:08,771 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:08,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:55:08,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:55:08,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:08" (1/1) ... [2019-10-22 08:55:08,785 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:08" (1/1) ... [2019-10-22 08:55:08,802 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:08,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:55:08,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:55:08,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:55:08,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:08" (1/1) ... [2019-10-22 08:55:08,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:08" (1/1) ... [2019-10-22 08:55:08,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:08" (1/1) ... [2019-10-22 08:55:08,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:08" (1/1) ... [2019-10-22 08:55:08,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:08" (1/1) ... [2019-10-22 08:55:08,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:08" (1/1) ... [2019-10-22 08:55:08,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:08" (1/1) ... [2019-10-22 08:55:08,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:55:08,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:55:08,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:55:08,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:55:08,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86ebf2df-5c56-4f1d-b836-643425a1567e/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 08:55:08,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:55:08,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:55:09,034 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:55:09,035 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-22 08:55:09,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:09 BoogieIcfgContainer [2019-10-22 08:55:09,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:55:09,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:55:09,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:55:09,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:55:09,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:55:08" (1/3) ... [2019-10-22 08:55:09,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e2cc931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:55:09, skipping insertion in model container [2019-10-22 08:55:09,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:08" (2/3) ... [2019-10-22 08:55:09,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e2cc931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:55:09, skipping insertion in model container [2019-10-22 08:55:09,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:09" (3/3) ... [2019-10-22 08:55:09,046 INFO L109 eAbstractionObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig1.c [2019-10-22 08:55:09,055 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:55:09,061 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-10-22 08:55:09,069 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-10-22 08:55:09,086 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:55:09,087 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:55:09,087 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:55:09,087 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:55:09,087 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:55:09,087 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:55:09,088 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:55:09,088 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:55:09,099 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-10-22 08:55:09,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-10-22 08:55:09,104 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:09,105 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-10-22 08:55:09,107 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:55:09,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:09,113 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-10-22 08:55:09,120 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:09,121 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104493881] [2019-10-22 08:55:09,121 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:09,121 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:09,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:09,219 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 08:55:09,219 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104493881] [2019-10-22 08:55:09,220 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:09,221 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-10-22 08:55:09,221 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792610183] [2019-10-22 08:55:09,228 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:55:09,229 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:09,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:55:09,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:09,239 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2019-10-22 08:55:09,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:09,266 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2019-10-22 08:55:09,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:55:09,271 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-10-22 08:55:09,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:09,279 INFO L225 Difference]: With dead ends: 14 [2019-10-22 08:55:09,279 INFO L226 Difference]: Without dead ends: 5 [2019-10-22 08:55:09,282 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 08:55:09,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2019-10-22 08:55:09,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-10-22 08:55:09,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-10-22 08:55:09,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2019-10-22 08:55:09,311 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2019-10-22 08:55:09,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:09,311 INFO L462 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2019-10-22 08:55:09,311 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:55:09,312 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2019-10-22 08:55:09,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-10-22 08:55:09,312 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:09,312 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-10-22 08:55:09,312 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:55:09,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:09,313 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2019-10-22 08:55:09,313 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:09,313 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80895075] [2019-10-22 08:55:09,313 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:09,313 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:09,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:09,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:09,328 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 08:55:09,328 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80895075] [2019-10-22 08:55:09,328 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:09,328 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:55:09,328 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807187426] [2019-10-22 08:55:09,330 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:55:09,330 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:09,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:55:09,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:09,331 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 3 states. [2019-10-22 08:55:09,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:09,398 INFO L93 Difference]: Finished difference Result 5 states and 5 transitions. [2019-10-22 08:55:09,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:55:09,414 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-10-22 08:55:09,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:09,415 INFO L225 Difference]: With dead ends: 5 [2019-10-22 08:55:09,415 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 08:55:09,415 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 08:55:09,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 08:55:09,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 08:55:09,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 08:55:09,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:55:09,416 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2019-10-22 08:55:09,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:09,416 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:55:09,416 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:55:09,417 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:55:09,417 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 08:55:09,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 08:55:09,470 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 08:55:09,470 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 08:55:09,470 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 08:55:09,470 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2019-10-22 08:55:09,470 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2019-10-22 08:55:09,471 INFO L439 ceAbstractionStarter]: At program point L19(lines 13 20) the Hoare annotation is: (<= ULTIMATE.start_main_~y~0 2147483647) [2019-10-22 08:55:09,471 INFO L443 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-10-22 08:55:09,471 INFO L443 ceAbstractionStarter]: For program point L17-1(line 17) no Hoare annotation was computed. [2019-10-22 08:55:09,471 INFO L439 ceAbstractionStarter]: At program point L16-2(lines 16 18) the Hoare annotation is: (<= ULTIMATE.start_main_~y~0 2147483647) [2019-10-22 08:55:09,471 INFO L443 ceAbstractionStarter]: For program point L16-3(lines 16 18) no Hoare annotation was computed. [2019-10-22 08:55:09,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:55:09 BoogieIcfgContainer [2019-10-22 08:55:09,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:55:09,484 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:55:09,484 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:55:09,485 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:55:09,485 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:09" (3/4) ... [2019-10-22 08:55:09,489 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 08:55:09,500 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 08:55:09,500 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 08:55:09,528 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_86ebf2df-5c56-4f1d-b836-643425a1567e/bin/uautomizer/witness.graphml [2019-10-22 08:55:09,529 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:55:09,531 INFO L168 Benchmark]: Toolchain (without parser) took 990.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 947.2 MB in the beginning and 1.1 GB in the end (delta: -168.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:09,531 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 964.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:09,532 INFO L168 Benchmark]: CACSL2BoogieTranslator took 230.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 947.2 MB in the beginning and 1.2 GB in the end (delta: -216.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:09,532 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:09,533 INFO L168 Benchmark]: Boogie Preprocessor took 18.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:09,534 INFO L168 Benchmark]: RCFGBuilder took 214.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:09,534 INFO L168 Benchmark]: TraceAbstraction took 447.52 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: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:09,535 INFO L168 Benchmark]: Witness Printer took 44.38 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:09,540 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 964.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 230.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 947.2 MB in the beginning and 1.2 GB in the end (delta: -216.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 214.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 447.52 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: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. * Witness Printer took 44.38 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: 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: 13]: Loop Invariant Derived loop invariant: y <= 2147483647 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: y <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 2 error locations. Result: SAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 6 SDslu, 0 SDs, 0 SdLazy, 9 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 6 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, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 33 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...