./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy1_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_664fd501-ef4c-4f1f-b9cb-f70c5753654f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_664fd501-ef4c-4f1f-b9cb-f70c5753654f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_664fd501-ef4c-4f1f-b9cb-f70c5753654f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_664fd501-ef4c-4f1f-b9cb-f70c5753654f/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy1_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_664fd501-ef4c-4f1f-b9cb-f70c5753654f/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_664fd501-ef4c-4f1f-b9cb-f70c5753654f/bin-2019/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 8fcad1cc5c987e49a6afac90dd5119b31f7d391b ...................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 12:50:22,849 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 12:50:22,850 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 12:50:22,856 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 12:50:22,856 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 12:50:22,857 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 12:50:22,857 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 12:50:22,858 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 12:50:22,859 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 12:50:22,860 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 12:50:22,860 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 12:50:22,860 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 12:50:22,861 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 12:50:22,861 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 12:50:22,862 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 12:50:22,862 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 12:50:22,863 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 12:50:22,864 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 12:50:22,865 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 12:50:22,866 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 12:50:22,866 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 12:50:22,867 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 12:50:22,868 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 12:50:22,868 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 12:50:22,868 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 12:50:22,869 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 12:50:22,870 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 12:50:22,870 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 12:50:22,870 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 12:50:22,871 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 12:50:22,871 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 12:50:22,872 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 12:50:22,872 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 12:50:22,872 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 12:50:22,873 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 12:50:22,873 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 12:50:22,873 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_664fd501-ef4c-4f1f-b9cb-f70c5753654f/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-12-02 12:50:22,881 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 12:50:22,881 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 12:50:22,881 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 12:50:22,882 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 12:50:22,882 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 12:50:22,882 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 12:50:22,882 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 12:50:22,882 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 12:50:22,882 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-02 12:50:22,883 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 12:50:22,883 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 12:50:22,883 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 12:50:22,883 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 12:50:22,883 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 12:50:22,883 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-12-02 12:50:22,883 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 12:50:22,883 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 12:50:22,884 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 12:50:22,884 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 12:50:22,884 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 12:50:22,884 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 12:50:22,884 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 12:50:22,884 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 12:50:22,884 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 12:50:22,884 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 12:50:22,885 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 12:50:22,885 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-02 12:50:22,885 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 12:50:22,885 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 12:50:22,885 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_664fd501-ef4c-4f1f-b9cb-f70c5753654f/bin-2019/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 -> 8fcad1cc5c987e49a6afac90dd5119b31f7d391b [2018-12-02 12:50:22,903 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 12:50:22,909 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 12:50:22,911 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 12:50:22,912 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 12:50:22,912 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 12:50:22,913 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_664fd501-ef4c-4f1f-b9cb-f70c5753654f/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy1_true-termination_true-no-overflow.c [2018-12-02 12:50:22,946 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_664fd501-ef4c-4f1f-b9cb-f70c5753654f/bin-2019/uautomizer/data/6ef957744/1535e2ab2785485fa53a59a488383ae6/FLAG7d5f7b5f0 [2018-12-02 12:50:23,429 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 12:50:23,430 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_664fd501-ef4c-4f1f-b9cb-f70c5753654f/sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy1_true-termination_true-no-overflow.c [2018-12-02 12:50:23,433 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_664fd501-ef4c-4f1f-b9cb-f70c5753654f/bin-2019/uautomizer/data/6ef957744/1535e2ab2785485fa53a59a488383ae6/FLAG7d5f7b5f0 [2018-12-02 12:50:23,933 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_664fd501-ef4c-4f1f-b9cb-f70c5753654f/bin-2019/uautomizer/data/6ef957744/1535e2ab2785485fa53a59a488383ae6 [2018-12-02 12:50:23,936 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 12:50:23,936 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 12:50:23,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 12:50:23,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 12:50:23,940 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 12:50:23,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:50:23" (1/1) ... [2018-12-02 12:50:23,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59185f77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:23, skipping insertion in model container [2018-12-02 12:50:23,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:50:23" (1/1) ... [2018-12-02 12:50:23,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 12:50:23,955 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 12:50:24,035 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 12:50:24,037 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 12:50:24,045 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 12:50:24,053 INFO L195 MainTranslator]: Completed translation [2018-12-02 12:50:24,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:24 WrapperNode [2018-12-02 12:50:24,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 12:50:24,054 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 12:50:24,054 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 12:50:24,054 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 12:50:24,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:24" (1/1) ... [2018-12-02 12:50:24,061 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:24" (1/1) ... [2018-12-02 12:50:24,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 12:50:24,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 12:50:24,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 12:50:24,065 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 12:50:24,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:24" (1/1) ... [2018-12-02 12:50:24,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:24" (1/1) ... [2018-12-02 12:50:24,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:24" (1/1) ... [2018-12-02 12:50:24,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:24" (1/1) ... [2018-12-02 12:50:24,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:24" (1/1) ... [2018-12-02 12:50:24,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:24" (1/1) ... [2018-12-02 12:50:24,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:24" (1/1) ... [2018-12-02 12:50:24,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 12:50:24,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 12:50:24,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 12:50:24,076 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 12:50:24,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_664fd501-ef4c-4f1f-b9cb-f70c5753654f/bin-2019/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 [2018-12-02 12:50:24,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 12:50:24,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 12:50:24,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 12:50:24,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 12:50:24,143 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 12:50:24,143 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 12:50:24,231 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 12:50:24,232 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-02 12:50:24,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:50:24 BoogieIcfgContainer [2018-12-02 12:50:24,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 12:50:24,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 12:50:24,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 12:50:24,235 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 12:50:24,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:50:23" (1/3) ... [2018-12-02 12:50:24,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3acc90e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:50:24, skipping insertion in model container [2018-12-02 12:50:24,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:24" (2/3) ... [2018-12-02 12:50:24,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3acc90e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:50:24, skipping insertion in model container [2018-12-02 12:50:24,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:50:24" (3/3) ... [2018-12-02 12:50:24,238 INFO L112 eAbstractionObserver]: Analyzing ICFG ChawdharyCookGulwaniSagivYang-ESOP2008-easy1_true-termination_true-no-overflow.c [2018-12-02 12:50:24,245 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 12:50:24,251 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-12-02 12:50:24,263 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-12-02 12:50:24,285 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 12:50:24,285 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 12:50:24,285 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 12:50:24,285 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 12:50:24,285 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 12:50:24,285 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 12:50:24,285 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 12:50:24,286 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 12:50:24,286 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 12:50:24,295 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-12-02 12:50:24,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-02 12:50:24,299 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 12:50:24,299 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 12:50:24,301 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 12:50:24,304 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 12:50:24,304 INFO L82 PathProgramCache]: Analyzing trace with hash 876558283, now seen corresponding path program 1 times [2018-12-02 12:50:24,305 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 12:50:24,305 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 12:50:24,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 12:50:24,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 12:50:24,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 12:50:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 12:50:24,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 12:50:24,385 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 12:50:24,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 12:50:24,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 12:50:24,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 12:50:24,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 12:50:24,398 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2018-12-02 12:50:24,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 12:50:24,432 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2018-12-02 12:50:24,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 12:50:24,433 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-12-02 12:50:24,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 12:50:24,441 INFO L225 Difference]: With dead ends: 33 [2018-12-02 12:50:24,441 INFO L226 Difference]: Without dead ends: 21 [2018-12-02 12:50:24,443 INFO L631 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 [2018-12-02 12:50:24,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-12-02 12:50:24,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2018-12-02 12:50:24,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-12-02 12:50:24,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-12-02 12:50:24,467 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 8 [2018-12-02 12:50:24,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 12:50:24,467 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-12-02 12:50:24,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 12:50:24,467 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-12-02 12:50:24,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-02 12:50:24,468 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 12:50:24,468 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 12:50:24,468 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 12:50:24,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 12:50:24,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1403503047, now seen corresponding path program 1 times [2018-12-02 12:50:24,468 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 12:50:24,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 12:50:24,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 12:50:24,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 12:50:24,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 12:50:24,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 12:50:24,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 12:50:24,480 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 12:50:24,480 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 12:50:24,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 12:50:24,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 12:50:24,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 12:50:24,481 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2018-12-02 12:50:24,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 12:50:24,503 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2018-12-02 12:50:24,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 12:50:24,503 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-12-02 12:50:24,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 12:50:24,504 INFO L225 Difference]: With dead ends: 19 [2018-12-02 12:50:24,504 INFO L226 Difference]: Without dead ends: 17 [2018-12-02 12:50:24,504 INFO L631 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 [2018-12-02 12:50:24,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-12-02 12:50:24,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-12-02 12:50:24,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-12-02 12:50:24,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2018-12-02 12:50:24,506 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 9 [2018-12-02 12:50:24,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 12:50:24,506 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-12-02 12:50:24,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 12:50:24,507 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2018-12-02 12:50:24,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-02 12:50:24,507 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 12:50:24,507 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 12:50:24,507 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 12:50:24,507 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 12:50:24,507 INFO L82 PathProgramCache]: Analyzing trace with hash 252689414, now seen corresponding path program 1 times [2018-12-02 12:50:24,507 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 12:50:24,507 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 12:50:24,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 12:50:24,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 12:50:24,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 12:50:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 12:50:24,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 12:50:24,519 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 12:50:24,519 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 12:50:24,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 12:50:24,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 12:50:24,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 12:50:24,520 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2018-12-02 12:50:24,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 12:50:24,530 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2018-12-02 12:50:24,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 12:50:24,531 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-12-02 12:50:24,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 12:50:24,531 INFO L225 Difference]: With dead ends: 17 [2018-12-02 12:50:24,531 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 12:50:24,531 INFO L631 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 [2018-12-02 12:50:24,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 12:50:24,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 12:50:24,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 12:50:24,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 12:50:24,532 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2018-12-02 12:50:24,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 12:50:24,532 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 12:50:24,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 12:50:24,532 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 12:50:24,532 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 12:50:24,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-02 12:50:24,546 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-02 12:50:24,546 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-02 12:50:24,546 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-02 12:50:24,546 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-02 12:50:24,546 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-02 12:50:24,546 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-02 12:50:24,546 INFO L448 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2018-12-02 12:50:24,547 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 11 22) no Hoare annotation was computed. [2018-12-02 12:50:24,547 INFO L448 ceAbstractionStarter]: For program point L15(lines 15 19) no Hoare annotation was computed. [2018-12-02 12:50:24,547 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2018-12-02 12:50:24,547 INFO L444 ceAbstractionStarter]: At program point L15-2(lines 14 20) the Hoare annotation is: (<= 0 main_~x~0) [2018-12-02 12:50:24,547 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 11 22) no Hoare annotation was computed. [2018-12-02 12:50:24,547 INFO L448 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2018-12-02 12:50:24,547 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 11 22) the Hoare annotation is: true [2018-12-02 12:50:24,547 INFO L448 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-12-02 12:50:24,547 INFO L448 ceAbstractionStarter]: For program point L18-1(line 18) no Hoare annotation was computed. [2018-12-02 12:50:24,547 INFO L448 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2018-12-02 12:50:24,547 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2018-12-02 12:50:24,547 INFO L448 ceAbstractionStarter]: For program point L16-1(line 16) no Hoare annotation was computed. [2018-12-02 12:50:24,547 INFO L448 ceAbstractionStarter]: For program point L14-2(lines 14 20) no Hoare annotation was computed. [2018-12-02 12:50:24,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:50:24 BoogieIcfgContainer [2018-12-02 12:50:24,554 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 12:50:24,554 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 12:50:24,554 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 12:50:24,555 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 12:50:24,555 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:50:24" (3/4) ... [2018-12-02 12:50:24,557 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 12:50:24,560 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-02 12:50:24,561 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-02 12:50:24,563 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-12-02 12:50:24,563 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-02 12:50:24,563 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-02 12:50:24,586 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_664fd501-ef4c-4f1f-b9cb-f70c5753654f/bin-2019/uautomizer/witness.graphml [2018-12-02 12:50:24,586 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 12:50:24,586 INFO L168 Benchmark]: Toolchain (without parser) took 650.57 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 962.4 MB in the beginning and 1.0 GB in the end (delta: -84.7 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2018-12-02 12:50:24,587 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 12:50:24,588 INFO L168 Benchmark]: CACSL2BoogieTranslator took 116.12 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 12:50:24,588 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.21 ms. Allocated memory is still 1.0 GB. Free memory is still 951.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 12:50:24,588 INFO L168 Benchmark]: Boogie Preprocessor took 11.15 ms. Allocated memory is still 1.0 GB. Free memory is still 951.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 12:50:24,588 INFO L168 Benchmark]: RCFGBuilder took 155.78 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -138.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2018-12-02 12:50:24,589 INFO L168 Benchmark]: TraceAbstraction took 321.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 43.4 MB). Peak memory consumption was 43.4 MB. Max. memory is 11.5 GB. [2018-12-02 12:50:24,589 INFO L168 Benchmark]: Witness Printer took 31.41 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 12:50:24,590 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 116.12 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.21 ms. Allocated memory is still 1.0 GB. Free memory is still 951.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.15 ms. Allocated memory is still 1.0 GB. Free memory is still 951.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 155.78 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -138.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 321.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 43.4 MB). Peak memory consumption was 43.4 MB. Max. memory is 11.5 GB. * Witness Printer took 31.41 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 4 error locations. SAFE Result, 0.2s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 12 SDslu, 18 SDs, 0 SdLazy, 29 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 6 NumberOfFragments, 7 HoareAnnotationTreeSize, 5 FomulaSimplifications, 11 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 384 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 3/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...