./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Nyala-2lex_true-no-overflow_true-termination_true-valid-memsafety.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_08c55c04-815e-4eef-b5de-f9b28e6dbff6/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_08c55c04-815e-4eef-b5de-f9b28e6dbff6/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_08c55c04-815e-4eef-b5de-f9b28e6dbff6/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_08c55c04-815e-4eef-b5de-f9b28e6dbff6/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Nyala-2lex_true-no-overflow_true-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_08c55c04-815e-4eef-b5de-f9b28e6dbff6/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_08c55c04-815e-4eef-b5de-f9b28e6dbff6/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 054e86c0b11592f66f6efc3e0f84c6f8bee49b59 ............................................................................................................................................................................................................................................................................................................................................................................................................... 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 21:08:01,559 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 21:08:01,560 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 21:08:01,566 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 21:08:01,567 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 21:08:01,567 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 21:08:01,568 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 21:08:01,569 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 21:08:01,569 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 21:08:01,570 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 21:08:01,570 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 21:08:01,570 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 21:08:01,571 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 21:08:01,571 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 21:08:01,572 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 21:08:01,572 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 21:08:01,572 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 21:08:01,573 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 21:08:01,574 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 21:08:01,575 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 21:08:01,575 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 21:08:01,576 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 21:08:01,577 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 21:08:01,577 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 21:08:01,577 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 21:08:01,578 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 21:08:01,578 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 21:08:01,579 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 21:08:01,579 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 21:08:01,580 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 21:08:01,580 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 21:08:01,580 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 21:08:01,580 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 21:08:01,580 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 21:08:01,581 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 21:08:01,581 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 21:08:01,581 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_08c55c04-815e-4eef-b5de-f9b28e6dbff6/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-12-02 21:08:01,588 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 21:08:01,588 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 21:08:01,589 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 21:08:01,589 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 21:08:01,589 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 21:08:01,589 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 21:08:01,589 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 21:08:01,589 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 21:08:01,589 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 21:08:01,589 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 21:08:01,590 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 21:08:01,590 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 21:08:01,590 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 21:08:01,590 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 21:08:01,590 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-02 21:08:01,590 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 21:08:01,590 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 21:08:01,590 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 21:08:01,591 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 21:08:01,591 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 21:08:01,591 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-12-02 21:08:01,591 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 21:08:01,591 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 21:08:01,591 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 21:08:01,591 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 21:08:01,591 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 21:08:01,591 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 21:08:01,591 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 21:08:01,591 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 21:08:01,592 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 21:08:01,592 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 21:08:01,592 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 21:08:01,592 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 21:08:01,592 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 21:08:01,592 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-02 21:08:01,592 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_08c55c04-815e-4eef-b5de-f9b28e6dbff6/bin-2019/utaipan 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 -> Taipan 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 -> 054e86c0b11592f66f6efc3e0f84c6f8bee49b59 [2018-12-02 21:08:01,609 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 21:08:01,615 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 21:08:01,617 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 21:08:01,618 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 21:08:01,619 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 21:08:01,619 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_08c55c04-815e-4eef-b5de-f9b28e6dbff6/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted/Nyala-2lex_true-no-overflow_true-termination_true-valid-memsafety.c [2018-12-02 21:08:01,654 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_08c55c04-815e-4eef-b5de-f9b28e6dbff6/bin-2019/utaipan/data/c72020e6a/8f501b8966274e50989b0d0cfaf592e0/FLAG5815f4485 [2018-12-02 21:08:02,049 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 21:08:02,050 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_08c55c04-815e-4eef-b5de-f9b28e6dbff6/sv-benchmarks/c/termination-crafted/Nyala-2lex_true-no-overflow_true-termination_true-valid-memsafety.c [2018-12-02 21:08:02,053 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_08c55c04-815e-4eef-b5de-f9b28e6dbff6/bin-2019/utaipan/data/c72020e6a/8f501b8966274e50989b0d0cfaf592e0/FLAG5815f4485 [2018-12-02 21:08:02,062 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_08c55c04-815e-4eef-b5de-f9b28e6dbff6/bin-2019/utaipan/data/c72020e6a/8f501b8966274e50989b0d0cfaf592e0 [2018-12-02 21:08:02,064 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 21:08:02,065 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 21:08:02,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 21:08:02,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 21:08:02,069 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 21:08:02,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:08:02" (1/1) ... [2018-12-02 21:08:02,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3033e242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:08:02, skipping insertion in model container [2018-12-02 21:08:02,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:08:02" (1/1) ... [2018-12-02 21:08:02,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 21:08:02,088 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 21:08:02,171 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 21:08:02,174 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 21:08:02,182 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 21:08:02,190 INFO L195 MainTranslator]: Completed translation [2018-12-02 21:08:02,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:08:02 WrapperNode [2018-12-02 21:08:02,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 21:08:02,190 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 21:08:02,190 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 21:08:02,190 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 21:08:02,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:08:02" (1/1) ... [2018-12-02 21:08:02,198 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:08:02" (1/1) ... [2018-12-02 21:08:02,201 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 21:08:02,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 21:08:02,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 21:08:02,202 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 21:08:02,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:08:02" (1/1) ... [2018-12-02 21:08:02,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:08:02" (1/1) ... [2018-12-02 21:08:02,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:08:02" (1/1) ... [2018-12-02 21:08:02,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:08:02" (1/1) ... [2018-12-02 21:08:02,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:08:02" (1/1) ... [2018-12-02 21:08:02,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:08:02" (1/1) ... [2018-12-02 21:08:02,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:08:02" (1/1) ... [2018-12-02 21:08:02,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 21:08:02,242 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 21:08:02,242 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 21:08:02,242 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 21:08:02,243 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:08:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08c55c04-815e-4eef-b5de-f9b28e6dbff6/bin-2019/utaipan/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 21:08:02,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 21:08:02,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 21:08:02,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 21:08:02,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 21:08:02,275 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 21:08:02,276 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 21:08:02,356 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 21:08:02,356 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-02 21:08:02,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:08:02 BoogieIcfgContainer [2018-12-02 21:08:02,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 21:08:02,357 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 21:08:02,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 21:08:02,359 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 21:08:02,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 09:08:02" (1/3) ... [2018-12-02 21:08:02,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d6f0ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:08:02, skipping insertion in model container [2018-12-02 21:08:02,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:08:02" (2/3) ... [2018-12-02 21:08:02,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d6f0ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:08:02, skipping insertion in model container [2018-12-02 21:08:02,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:08:02" (3/3) ... [2018-12-02 21:08:02,361 INFO L112 eAbstractionObserver]: Analyzing ICFG Nyala-2lex_true-no-overflow_true-termination_true-valid-memsafety.c [2018-12-02 21:08:02,366 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 21:08:02,370 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-12-02 21:08:02,382 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-12-02 21:08:02,406 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 21:08:02,406 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 21:08:02,406 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 21:08:02,406 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 21:08:02,406 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 21:08:02,406 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 21:08:02,406 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 21:08:02,406 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 21:08:02,416 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-12-02 21:08:02,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-02 21:08:02,419 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 21:08:02,419 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-12-02 21:08:02,421 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 21:08:02,423 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:08:02,424 INFO L82 PathProgramCache]: Analyzing trace with hash 998107396, now seen corresponding path program 1 times [2018-12-02 21:08:02,425 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 21:08:02,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:08:02,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:08:02,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:08:02,456 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 21:08:02,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:08:02,502 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 21:08:02,503 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 21:08:02,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 21:08:02,503 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 21:08:02,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 21:08:02,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 21:08:02,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 21:08:02,516 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2018-12-02 21:08:02,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 21:08:02,536 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-12-02 21:08:02,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 21:08:02,537 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-12-02 21:08:02,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 21:08:02,542 INFO L225 Difference]: With dead ends: 25 [2018-12-02 21:08:02,542 INFO L226 Difference]: Without dead ends: 14 [2018-12-02 21:08:02,544 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 21:08:02,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-12-02 21:08:02,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-12-02 21:08:02,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-02 21:08:02,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2018-12-02 21:08:02,564 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 7 [2018-12-02 21:08:02,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 21:08:02,564 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2018-12-02 21:08:02,564 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 21:08:02,564 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2018-12-02 21:08:02,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-02 21:08:02,565 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 21:08:02,565 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 21:08:02,565 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 21:08:02,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:08:02,565 INFO L82 PathProgramCache]: Analyzing trace with hash 876558251, now seen corresponding path program 1 times [2018-12-02 21:08:02,565 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 21:08:02,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:08:02,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:08:02,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:08:02,567 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 21:08:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:08:02,579 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 21:08:02,580 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 21:08:02,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 21:08:02,580 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 21:08:02,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 21:08:02,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 21:08:02,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 21:08:02,581 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 3 states. [2018-12-02 21:08:02,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 21:08:02,599 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2018-12-02 21:08:02,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 21:08:02,600 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-12-02 21:08:02,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 21:08:02,600 INFO L225 Difference]: With dead ends: 15 [2018-12-02 21:08:02,600 INFO L226 Difference]: Without dead ends: 14 [2018-12-02 21:08:02,601 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 21:08:02,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-12-02 21:08:02,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2018-12-02 21:08:02,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-12-02 21:08:02,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-12-02 21:08:02,603 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 8 [2018-12-02 21:08:02,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 21:08:02,603 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-12-02 21:08:02,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 21:08:02,604 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-12-02 21:08:02,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-02 21:08:02,604 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 21:08:02,604 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 21:08:02,604 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 21:08:02,605 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:08:02,605 INFO L82 PathProgramCache]: Analyzing trace with hash 558890797, now seen corresponding path program 1 times [2018-12-02 21:08:02,605 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 21:08:02,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:08:02,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:08:02,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:08:02,607 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 21:08:02,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:08:02,629 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 21:08:02,630 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 21:08:02,630 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 21:08:02,630 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 21:08:02,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 21:08:02,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 21:08:02,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 21:08:02,631 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 3 states. [2018-12-02 21:08:02,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 21:08:02,639 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2018-12-02 21:08:02,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 21:08:02,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-02 21:08:02,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 21:08:02,640 INFO L225 Difference]: With dead ends: 13 [2018-12-02 21:08:02,640 INFO L226 Difference]: Without dead ends: 12 [2018-12-02 21:08:02,641 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 21:08:02,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-12-02 21:08:02,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-02 21:08:02,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-02 21:08:02,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2018-12-02 21:08:02,643 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2018-12-02 21:08:02,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 21:08:02,644 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2018-12-02 21:08:02,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 21:08:02,644 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2018-12-02 21:08:02,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-02 21:08:02,644 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 21:08:02,644 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 21:08:02,645 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 21:08:02,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:08:02,645 INFO L82 PathProgramCache]: Analyzing trace with hash 145745577, now seen corresponding path program 1 times [2018-12-02 21:08:02,645 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 21:08:02,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:08:02,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:08:02,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:08:02,646 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 21:08:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:08:02,665 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 21:08:02,665 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 21:08:02,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 21:08:02,665 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 21:08:02,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 21:08:02,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 21:08:02,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 21:08:02,666 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 3 states. [2018-12-02 21:08:02,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 21:08:02,675 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2018-12-02 21:08:02,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 21:08:02,676 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-12-02 21:08:02,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 21:08:02,676 INFO L225 Difference]: With dead ends: 13 [2018-12-02 21:08:02,676 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 21:08:02,676 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 21:08:02,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 21:08:02,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 21:08:02,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 21:08:02,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 21:08:02,677 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2018-12-02 21:08:02,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 21:08:02,677 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 21:08:02,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 21:08:02,677 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 21:08:02,677 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 21:08:02,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-02 21:08:02,707 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-02 21:08:02,707 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-02 21:08:02,708 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-02 21:08:02,708 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-02 21:08:02,708 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-02 21:08:02,708 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-02 21:08:02,708 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-12-02 21:08:02,708 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 15 27) no Hoare annotation was computed. [2018-12-02 21:08:02,708 INFO L448 ceAbstractionStarter]: For program point L21(lines 21 24) no Hoare annotation was computed. [2018-12-02 21:08:02,708 INFO L444 ceAbstractionStarter]: At program point L21-2(lines 19 25) the Hoare annotation is: (and (<= main_~x~0 2147483647) (<= main_~y~0 2147483647)) [2018-12-02 21:08:02,708 INFO L448 ceAbstractionStarter]: For program point L19-2(lines 19 25) no Hoare annotation was computed. [2018-12-02 21:08:02,708 INFO L448 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-12-02 21:08:02,709 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 15 27) no Hoare annotation was computed. [2018-12-02 21:08:02,709 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 15 27) the Hoare annotation is: true [2018-12-02 21:08:02,709 INFO L448 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-12-02 21:08:02,709 INFO L448 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2018-12-02 21:08:02,709 INFO L448 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-12-02 21:08:02,709 INFO L448 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-12-02 21:08:02,709 INFO L448 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-12-02 21:08:02,709 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-12-02 21:08:02,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 09:08:02 BoogieIcfgContainer [2018-12-02 21:08:02,717 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 21:08:02,718 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 21:08:02,718 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 21:08:02,718 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 21:08:02,718 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:08:02" (3/4) ... [2018-12-02 21:08:02,720 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 21:08:02,724 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-02 21:08:02,724 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-02 21:08:02,727 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-12-02 21:08:02,727 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-02 21:08:02,727 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-02 21:08:02,756 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_08c55c04-815e-4eef-b5de-f9b28e6dbff6/bin-2019/utaipan/witness.graphml [2018-12-02 21:08:02,756 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 21:08:02,756 INFO L168 Benchmark]: Toolchain (without parser) took 692.00 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 954.4 MB in the beginning and 1.0 GB in the end (delta: -82.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 11.5 GB. [2018-12-02 21:08:02,757 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 21:08:02,757 INFO L168 Benchmark]: CACSL2BoogieTranslator took 123.92 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 946.2 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. [2018-12-02 21:08:02,758 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.09 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 21:08:02,758 INFO L168 Benchmark]: Boogie Preprocessor took 40.30 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 943.6 MB in the beginning and 1.1 GB in the end (delta: -155.8 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. [2018-12-02 21:08:02,758 INFO L168 Benchmark]: RCFGBuilder took 114.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 11.5 GB. [2018-12-02 21:08:02,758 INFO L168 Benchmark]: TraceAbstraction took 360.13 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: 45.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 11.5 GB. [2018-12-02 21:08:02,759 INFO L168 Benchmark]: Witness Printer took 38.42 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-02 21:08:02,760 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 123.92 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 946.2 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.09 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.30 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 943.6 MB in the beginning and 1.1 GB in the end (delta: -155.8 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 114.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 360.13 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: 45.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 11.5 GB. * Witness Printer took 38.42 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: 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: 19]: Loop Invariant Derived loop invariant: x <= 2147483647 && y <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 4 error locations. SAFE Result, 0.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 44 SDtfs, 14 SDslu, 21 SDs, 0 SdLazy, 23 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 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, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 6 NumberOfFragments, 11 HoareAnnotationTreeSize, 5 FomulaSimplifications, 27 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 508 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...