./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Copenhagen_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_ea22a390-9d15-4fda-9846-d8d45abe14b5/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ea22a390-9d15-4fda-9846-d8d45abe14b5/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ea22a390-9d15-4fda-9846-d8d45abe14b5/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ea22a390-9d15-4fda-9846-d8d45abe14b5/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Copenhagen_true-no-overflow_true-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_ea22a390-9d15-4fda-9846-d8d45abe14b5/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ea22a390-9d15-4fda-9846-d8d45abe14b5/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 9bcaeaea390de0d2b32b8c11c56b4b66e7b2005e .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 01:39:57,531 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 01:39:57,532 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 01:39:57,537 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 01:39:57,538 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 01:39:57,538 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 01:39:57,539 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 01:39:57,539 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 01:39:57,540 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 01:39:57,540 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 01:39:57,541 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 01:39:57,541 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 01:39:57,541 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 01:39:57,542 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 01:39:57,542 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 01:39:57,543 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 01:39:57,543 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 01:39:57,544 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 01:39:57,545 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 01:39:57,546 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 01:39:57,546 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 01:39:57,547 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 01:39:57,548 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 01:39:57,548 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 01:39:57,548 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 01:39:57,548 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 01:39:57,549 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 01:39:57,549 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 01:39:57,549 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 01:39:57,550 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 01:39:57,550 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 01:39:57,550 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 01:39:57,551 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 01:39:57,551 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 01:39:57,551 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 01:39:57,551 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 01:39:57,552 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ea22a390-9d15-4fda-9846-d8d45abe14b5/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-12-09 01:39:57,559 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 01:39:57,559 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 01:39:57,559 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 01:39:57,559 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 01:39:57,559 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 01:39:57,560 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 01:39:57,560 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 01:39:57,560 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 01:39:57,560 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 01:39:57,560 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 01:39:57,560 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 01:39:57,560 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 01:39:57,560 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 01:39:57,561 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 01:39:57,561 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 01:39:57,561 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 01:39:57,561 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 01:39:57,561 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 01:39:57,561 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 01:39:57,561 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 01:39:57,561 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-12-09 01:39:57,561 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 01:39:57,561 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 01:39:57,561 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 01:39:57,562 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 01:39:57,562 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 01:39:57,562 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 01:39:57,562 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 01:39:57,562 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 01:39:57,562 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 01:39:57,562 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 01:39:57,562 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 01:39:57,562 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 01:39:57,562 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 01:39:57,562 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 01:39:57,563 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_ea22a390-9d15-4fda-9846-d8d45abe14b5/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 -> 9bcaeaea390de0d2b32b8c11c56b4b66e7b2005e [2018-12-09 01:39:57,580 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 01:39:57,589 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 01:39:57,592 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 01:39:57,593 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 01:39:57,593 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 01:39:57,594 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ea22a390-9d15-4fda-9846-d8d45abe14b5/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted/Copenhagen_true-no-overflow_true-termination_true-valid-memsafety.c [2018-12-09 01:39:57,637 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ea22a390-9d15-4fda-9846-d8d45abe14b5/bin-2019/utaipan/data/0bc9eeb7b/126d0873d6fe4e6491b0cd3068234ca7/FLAGac909bc42 [2018-12-09 01:39:58,025 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 01:39:58,026 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ea22a390-9d15-4fda-9846-d8d45abe14b5/sv-benchmarks/c/termination-crafted/Copenhagen_true-no-overflow_true-termination_true-valid-memsafety.c [2018-12-09 01:39:58,029 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ea22a390-9d15-4fda-9846-d8d45abe14b5/bin-2019/utaipan/data/0bc9eeb7b/126d0873d6fe4e6491b0cd3068234ca7/FLAGac909bc42 [2018-12-09 01:39:58,039 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ea22a390-9d15-4fda-9846-d8d45abe14b5/bin-2019/utaipan/data/0bc9eeb7b/126d0873d6fe4e6491b0cd3068234ca7 [2018-12-09 01:39:58,041 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 01:39:58,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 01:39:58,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 01:39:58,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 01:39:58,045 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 01:39:58,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:39:58" (1/1) ... [2018-12-09 01:39:58,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cecaa61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:39:58, skipping insertion in model container [2018-12-09 01:39:58,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:39:58" (1/1) ... [2018-12-09 01:39:58,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 01:39:58,061 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 01:39:58,153 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:39:58,156 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 01:39:58,165 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:39:58,173 INFO L195 MainTranslator]: Completed translation [2018-12-09 01:39:58,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:39:58 WrapperNode [2018-12-09 01:39:58,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 01:39:58,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 01:39:58,175 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 01:39:58,175 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 01:39:58,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:39:58" (1/1) ... [2018-12-09 01:39:58,182 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:39:58" (1/1) ... [2018-12-09 01:39:58,186 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 01:39:58,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 01:39:58,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 01:39:58,187 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 01:39:58,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:39:58" (1/1) ... [2018-12-09 01:39:58,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:39:58" (1/1) ... [2018-12-09 01:39:58,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:39:58" (1/1) ... [2018-12-09 01:39:58,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:39:58" (1/1) ... [2018-12-09 01:39:58,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:39:58" (1/1) ... [2018-12-09 01:39:58,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:39:58" (1/1) ... [2018-12-09 01:39:58,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:39:58" (1/1) ... [2018-12-09 01:39:58,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 01:39:58,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 01:39:58,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 01:39:58,200 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 01:39:58,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:39:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ea22a390-9d15-4fda-9846-d8d45abe14b5/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 [2018-12-09 01:39:58,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 01:39:58,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 01:39:58,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 01:39:58,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 01:39:58,268 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 01:39:58,268 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 01:39:58,354 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 01:39:58,355 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-09 01:39:58,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:39:58 BoogieIcfgContainer [2018-12-09 01:39:58,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 01:39:58,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 01:39:58,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 01:39:58,357 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 01:39:58,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 01:39:58" (1/3) ... [2018-12-09 01:39:58,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a4c3273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:39:58, skipping insertion in model container [2018-12-09 01:39:58,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:39:58" (2/3) ... [2018-12-09 01:39:58,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a4c3273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:39:58, skipping insertion in model container [2018-12-09 01:39:58,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:39:58" (3/3) ... [2018-12-09 01:39:58,360 INFO L112 eAbstractionObserver]: Analyzing ICFG Copenhagen_true-no-overflow_true-termination_true-valid-memsafety.c [2018-12-09 01:39:58,368 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 01:39:58,372 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-12-09 01:39:58,381 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-12-09 01:39:58,399 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 01:39:58,399 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 01:39:58,399 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 01:39:58,399 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 01:39:58,399 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 01:39:58,399 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 01:39:58,400 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 01:39:58,400 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 01:39:58,409 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-12-09 01:39:58,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-09 01:39:58,412 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:39:58,413 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:39:58,414 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:39:58,417 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:39:58,417 INFO L82 PathProgramCache]: Analyzing trace with hash -37667266, now seen corresponding path program 1 times [2018-12-09 01:39:58,419 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:39:58,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:39:58,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:39:58,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:39:58,457 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:39:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:39:58,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:39:58,504 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:39:58,504 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 01:39:58,504 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:39:58,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 01:39:58,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 01:39:58,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 01:39:58,516 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2018-12-09 01:39:58,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:39:58,549 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2018-12-09 01:39:58,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 01:39:58,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-12-09 01:39:58,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:39:58,555 INFO L225 Difference]: With dead ends: 35 [2018-12-09 01:39:58,555 INFO L226 Difference]: Without dead ends: 21 [2018-12-09 01:39:58,557 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 [2018-12-09 01:39:58,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-12-09 01:39:58,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2018-12-09 01:39:58,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-12-09 01:39:58,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-12-09 01:39:58,577 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2018-12-09 01:39:58,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:39:58,577 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-12-09 01:39:58,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 01:39:58,577 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-12-09 01:39:58,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-09 01:39:58,577 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:39:58,578 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:39:58,578 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:39:58,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:39:58,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1167685199, now seen corresponding path program 1 times [2018-12-09 01:39:58,578 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:39:58,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:39:58,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:39:58,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:39:58,580 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:39:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:39:58,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:39:58,597 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:39:58,597 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 01:39:58,598 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:39:58,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 01:39:58,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 01:39:58,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 01:39:58,599 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2018-12-09 01:39:58,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:39:58,608 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-12-09 01:39:58,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 01:39:58,609 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-12-09 01:39:58,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:39:58,609 INFO L225 Difference]: With dead ends: 16 [2018-12-09 01:39:58,609 INFO L226 Difference]: Without dead ends: 15 [2018-12-09 01:39:58,610 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 [2018-12-09 01:39:58,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-12-09 01:39:58,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-12-09 01:39:58,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-12-09 01:39:58,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-12-09 01:39:58,613 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2018-12-09 01:39:58,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:39:58,613 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-12-09 01:39:58,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 01:39:58,613 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-12-09 01:39:58,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-09 01:39:58,614 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:39:58,614 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:39:58,614 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:39:58,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:39:58,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1838502752, now seen corresponding path program 1 times [2018-12-09 01:39:58,615 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:39:58,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:39:58,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:39:58,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:39:58,616 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:39:58,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:39:58,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:39:58,644 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:39:58,644 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 01:39:58,644 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:39:58,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 01:39:58,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 01:39:58,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 01:39:58,645 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2018-12-09 01:39:58,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:39:58,664 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2018-12-09 01:39:58,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 01:39:58,665 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-12-09 01:39:58,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:39:58,665 INFO L225 Difference]: With dead ends: 20 [2018-12-09 01:39:58,665 INFO L226 Difference]: Without dead ends: 19 [2018-12-09 01:39:58,665 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-09 01:39:58,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-12-09 01:39:58,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2018-12-09 01:39:58,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-12-09 01:39:58,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-12-09 01:39:58,668 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 9 [2018-12-09 01:39:58,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:39:58,668 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-12-09 01:39:58,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 01:39:58,668 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-12-09 01:39:58,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 01:39:58,668 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:39:58,668 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:39:58,668 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:39:58,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:39:58,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1159010413, now seen corresponding path program 1 times [2018-12-09 01:39:58,669 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:39:58,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:39:58,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:39:58,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:39:58,670 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:39:58,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:39:58,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:39:58,683 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:39:58,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 01:39:58,683 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:39:58,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 01:39:58,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 01:39:58,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 01:39:58,683 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 3 states. [2018-12-09 01:39:58,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:39:58,689 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-12-09 01:39:58,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 01:39:58,689 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-09 01:39:58,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:39:58,690 INFO L225 Difference]: With dead ends: 17 [2018-12-09 01:39:58,690 INFO L226 Difference]: Without dead ends: 16 [2018-12-09 01:39:58,690 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 [2018-12-09 01:39:58,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-12-09 01:39:58,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-12-09 01:39:58,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-12-09 01:39:58,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-12-09 01:39:58,692 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 10 [2018-12-09 01:39:58,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:39:58,692 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-12-09 01:39:58,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 01:39:58,692 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-12-09 01:39:58,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-09 01:39:58,693 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:39:58,693 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:39:58,693 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:39:58,693 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:39:58,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1412475851, now seen corresponding path program 1 times [2018-12-09 01:39:58,693 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:39:58,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:39:58,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:39:58,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:39:58,694 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:39:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:39:58,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:39:58,717 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:39:58,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 01:39:58,718 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:39:58,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 01:39:58,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 01:39:58,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 01:39:58,718 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 4 states. [2018-12-09 01:39:58,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:39:58,733 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-12-09 01:39:58,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 01:39:58,733 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-12-09 01:39:58,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:39:58,734 INFO L225 Difference]: With dead ends: 16 [2018-12-09 01:39:58,734 INFO L226 Difference]: Without dead ends: 15 [2018-12-09 01:39:58,734 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-09 01:39:58,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-12-09 01:39:58,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-12-09 01:39:58,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-12-09 01:39:58,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-12-09 01:39:58,736 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-12-09 01:39:58,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:39:58,737 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-12-09 01:39:58,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 01:39:58,737 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-12-09 01:39:58,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-09 01:39:58,737 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:39:58,737 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:39:58,738 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:39:58,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:39:58,738 INFO L82 PathProgramCache]: Analyzing trace with hash -179625769, now seen corresponding path program 1 times [2018-12-09 01:39:58,738 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:39:58,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:39:58,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:39:58,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:39:58,740 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:39:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:39:58,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:39:58,766 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:39:58,766 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 01:39:58,766 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-12-09 01:39:58,768 INFO L205 CegarAbsIntRunner]: [0], [4], [13], [15], [17], [18], [19], [21], [27], [28], [29] [2018-12-09 01:39:58,786 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 01:39:58,786 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 01:39:58,845 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 01:39:58,845 INFO L272 AbstractInterpreter]: Visited 11 different actions 11 times. Never merged. Never widened. Performed 32 root evaluator evaluations with a maximum evaluation depth of 3. Performed 32 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2018-12-09 01:39:58,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:39:58,851 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 01:39:58,851 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:39:58,851 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ea22a390-9d15-4fda-9846-d8d45abe14b5/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 01:39:58,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:39:58,858 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 01:39:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:39:58,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:39:58,912 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:39:58,912 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 01:39:58,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:39:58,948 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 01:39:58,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2018-12-09 01:39:58,949 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 01:39:58,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 01:39:58,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 01:39:58,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-12-09 01:39:58,949 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2018-12-09 01:39:58,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:39:58,994 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-12-09 01:39:58,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 01:39:58,994 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-12-09 01:39:58,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:39:58,994 INFO L225 Difference]: With dead ends: 17 [2018-12-09 01:39:58,994 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 01:39:58,995 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2018-12-09 01:39:58,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 01:39:58,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 01:39:58,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 01:39:58,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 01:39:58,995 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-12-09 01:39:58,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:39:58,995 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 01:39:58,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 01:39:58,996 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 01:39:58,996 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 01:39:58,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 01:39:59,025 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-09 01:39:59,025 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 01:39:59,025 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 01:39:59,026 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 01:39:59,026 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 01:39:59,026 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 01:39:59,026 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 11 22) the Hoare annotation is: true [2018-12-09 01:39:59,026 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 11 22) no Hoare annotation was computed. [2018-12-09 01:39:59,026 INFO L448 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2018-12-09 01:39:59,026 INFO L448 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-12-09 01:39:59,026 INFO L448 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2018-12-09 01:39:59,026 INFO L448 ceAbstractionStarter]: For program point L18-1(line 18) no Hoare annotation was computed. [2018-12-09 01:39:59,027 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2018-12-09 01:39:59,027 INFO L444 ceAbstractionStarter]: At program point L16-2(lines 16 20) the Hoare annotation is: (and (<= main_~x~0 2147483647) (<= main_~y~0 2147483647)) [2018-12-09 01:39:59,027 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2018-12-09 01:39:59,027 INFO L448 ceAbstractionStarter]: For program point L16-3(lines 16 20) no Hoare annotation was computed. [2018-12-09 01:39:59,027 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 11 22) no Hoare annotation was computed. [2018-12-09 01:39:59,027 INFO L448 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2018-12-09 01:39:59,027 INFO L448 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2018-12-09 01:39:59,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 01:39:59 BoogieIcfgContainer [2018-12-09 01:39:59,037 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 01:39:59,037 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 01:39:59,037 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 01:39:59,037 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 01:39:59,038 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:39:58" (3/4) ... [2018-12-09 01:39:59,041 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 01:39:59,044 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 01:39:59,044 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 01:39:59,046 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-12-09 01:39:59,047 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-09 01:39:59,047 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 01:39:59,071 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ea22a390-9d15-4fda-9846-d8d45abe14b5/bin-2019/utaipan/witness.graphml [2018-12-09 01:39:59,071 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 01:39:59,072 INFO L168 Benchmark]: Toolchain (without parser) took 1030.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 950.9 MB in the beginning and 1.0 GB in the end (delta: -58.5 MB). Peak memory consumption was 58.9 MB. Max. memory is 11.5 GB. [2018-12-09 01:39:59,072 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 976.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:39:59,073 INFO L168 Benchmark]: CACSL2BoogieTranslator took 131.70 ms. Allocated memory is still 1.0 GB. Free memory was 950.9 MB in the beginning and 942.9 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. [2018-12-09 01:39:59,073 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.99 ms. Allocated memory is still 1.0 GB. Free memory is still 940.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:39:59,073 INFO L168 Benchmark]: Boogie Preprocessor took 12.92 ms. Allocated memory is still 1.0 GB. Free memory is still 940.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:39:59,073 INFO L168 Benchmark]: RCFGBuilder took 155.44 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -166.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2018-12-09 01:39:59,074 INFO L168 Benchmark]: TraceAbstraction took 681.49 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: 88.9 MB). Peak memory consumption was 88.9 MB. Max. memory is 11.5 GB. [2018-12-09 01:39:59,074 INFO L168 Benchmark]: Witness Printer took 33.85 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. [2018-12-09 01:39:59,076 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 976.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 131.70 ms. Allocated memory is still 1.0 GB. Free memory was 950.9 MB in the beginning and 942.9 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 11.99 ms. Allocated memory is still 1.0 GB. Free memory is still 940.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.92 ms. Allocated memory is still 1.0 GB. Free memory is still 940.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 155.44 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -166.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 681.49 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: 88.9 MB). Peak memory consumption was 88.9 MB. Max. memory is 11.5 GB. * Witness Printer took 33.85 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: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: x <= 2147483647 && y <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 4 error locations. SAFE Result, 0.6s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 56 SDtfs, 34 SDslu, 53 SDs, 0 SdLazy, 65 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 7 NumberOfFragments, 11 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 33 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 1762 SizeOfPredicates, 3 NumberOfNonLiveVariables, 39 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 4/14 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...