./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2-modified1000_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_3b3f3a3a-21c1-4260-b9ae-36d45207f6c6/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3b3f3a3a-21c1-4260-b9ae-36d45207f6c6/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3b3f3a3a-21c1-4260-b9ae-36d45207f6c6/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3b3f3a3a-21c1-4260-b9ae-36d45207f6c6/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2-modified1000_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_3b3f3a3a-21c1-4260-b9ae-36d45207f6c6/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3b3f3a3a-21c1-4260-b9ae-36d45207f6c6/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 2b2cc94eb5b8374a9980482fd0dfec59d6d2cf62 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 19:42:06,010 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 19:42:06,011 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 19:42:06,017 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 19:42:06,017 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 19:42:06,018 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 19:42:06,018 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 19:42:06,019 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 19:42:06,020 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 19:42:06,020 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 19:42:06,021 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 19:42:06,021 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 19:42:06,021 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 19:42:06,022 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 19:42:06,022 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 19:42:06,023 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 19:42:06,023 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 19:42:06,024 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 19:42:06,025 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 19:42:06,026 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 19:42:06,026 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 19:42:06,027 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 19:42:06,028 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 19:42:06,028 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 19:42:06,028 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 19:42:06,028 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 19:42:06,029 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 19:42:06,029 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 19:42:06,030 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 19:42:06,030 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 19:42:06,030 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 19:42:06,030 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 19:42:06,030 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 19:42:06,031 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 19:42:06,031 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 19:42:06,031 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 19:42:06,032 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3b3f3a3a-21c1-4260-b9ae-36d45207f6c6/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-12-08 19:42:06,038 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 19:42:06,038 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 19:42:06,039 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 19:42:06,039 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 19:42:06,039 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-08 19:42:06,039 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-08 19:42:06,039 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-08 19:42:06,039 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-08 19:42:06,039 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-08 19:42:06,039 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-08 19:42:06,040 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-08 19:42:06,040 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-08 19:42:06,040 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-08 19:42:06,040 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 19:42:06,040 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-08 19:42:06,040 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 19:42:06,040 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 19:42:06,040 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 19:42:06,041 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 19:42:06,041 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 19:42:06,041 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-12-08 19:42:06,041 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 19:42:06,041 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 19:42:06,041 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 19:42:06,041 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 19:42:06,041 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 19:42:06,041 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 19:42:06,041 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 19:42:06,042 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 19:42:06,042 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 19:42:06,042 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 19:42:06,042 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-08 19:42:06,042 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 19:42:06,042 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 19:42:06,042 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-08 19:42:06,042 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_3b3f3a3a-21c1-4260-b9ae-36d45207f6c6/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 -> 2b2cc94eb5b8374a9980482fd0dfec59d6d2cf62 [2018-12-08 19:42:06,059 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 19:42:06,065 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 19:42:06,067 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 19:42:06,068 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 19:42:06,068 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 19:42:06,068 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3b3f3a3a-21c1-4260-b9ae-36d45207f6c6/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2-modified1000_true-termination_true-no-overflow.c [2018-12-08 19:42:06,102 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3b3f3a3a-21c1-4260-b9ae-36d45207f6c6/bin-2019/utaipan/data/b593e6b6e/db3944339d5c42d3b2dde70eb0f50c23/FLAG9cf094f6e [2018-12-08 19:42:06,377 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 19:42:06,377 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3b3f3a3a-21c1-4260-b9ae-36d45207f6c6/sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2-modified1000_true-termination_true-no-overflow.c [2018-12-08 19:42:06,381 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3b3f3a3a-21c1-4260-b9ae-36d45207f6c6/bin-2019/utaipan/data/b593e6b6e/db3944339d5c42d3b2dde70eb0f50c23/FLAG9cf094f6e [2018-12-08 19:42:06,389 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3b3f3a3a-21c1-4260-b9ae-36d45207f6c6/bin-2019/utaipan/data/b593e6b6e/db3944339d5c42d3b2dde70eb0f50c23 [2018-12-08 19:42:06,390 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 19:42:06,391 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 19:42:06,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 19:42:06,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 19:42:06,394 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 19:42:06,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 07:42:06" (1/1) ... [2018-12-08 19:42:06,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60ff7dc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:42:06, skipping insertion in model container [2018-12-08 19:42:06,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 07:42:06" (1/1) ... [2018-12-08 19:42:06,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 19:42:06,411 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 19:42:06,492 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 19:42:06,494 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 19:42:06,503 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 19:42:06,510 INFO L195 MainTranslator]: Completed translation [2018-12-08 19:42:06,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:42:06 WrapperNode [2018-12-08 19:42:06,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 19:42:06,511 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 19:42:06,511 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 19:42:06,511 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 19:42:06,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:42:06" (1/1) ... [2018-12-08 19:42:06,519 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:42:06" (1/1) ... [2018-12-08 19:42:06,523 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 19:42:06,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 19:42:06,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 19:42:06,523 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 19:42:06,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:42:06" (1/1) ... [2018-12-08 19:42:06,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:42:06" (1/1) ... [2018-12-08 19:42:06,528 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:42:06" (1/1) ... [2018-12-08 19:42:06,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:42:06" (1/1) ... [2018-12-08 19:42:06,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:42:06" (1/1) ... [2018-12-08 19:42:06,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:42:06" (1/1) ... [2018-12-08 19:42:06,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:42:06" (1/1) ... [2018-12-08 19:42:06,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 19:42:06,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 19:42:06,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 19:42:06,535 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 19:42:06,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:42:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3b3f3a3a-21c1-4260-b9ae-36d45207f6c6/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 [2018-12-08 19:42:06,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 19:42:06,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 19:42:06,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 19:42:06,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 19:42:06,599 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 19:42:06,599 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 19:42:06,679 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 19:42:06,679 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-08 19:42:06,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 07:42:06 BoogieIcfgContainer [2018-12-08 19:42:06,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 19:42:06,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 19:42:06,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 19:42:06,682 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 19:42:06,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 07:42:06" (1/3) ... [2018-12-08 19:42:06,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c469ecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 07:42:06, skipping insertion in model container [2018-12-08 19:42:06,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:42:06" (2/3) ... [2018-12-08 19:42:06,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c469ecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 07:42:06, skipping insertion in model container [2018-12-08 19:42:06,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 07:42:06" (3/3) ... [2018-12-08 19:42:06,684 INFO L112 eAbstractionObserver]: Analyzing ICFG Urban-WST2013-Fig2-modified1000_true-termination_true-no-overflow.c [2018-12-08 19:42:06,690 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 19:42:06,694 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-12-08 19:42:06,704 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-12-08 19:42:06,722 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 19:42:06,722 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 19:42:06,723 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 19:42:06,723 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 19:42:06,723 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 19:42:06,723 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 19:42:06,723 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 19:42:06,723 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 19:42:06,734 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-12-08 19:42:06,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-08 19:42:06,737 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 19:42:06,738 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 19:42:06,739 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 19:42:06,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:42:06,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1374165426, now seen corresponding path program 1 times [2018-12-08 19:42:06,744 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 19:42:06,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:42:06,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:42:06,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:42:06,778 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 19:42:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:42:06,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 19:42:06,826 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 19:42:06,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 19:42:06,826 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 19:42:06,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 19:42:06,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 19:42:06,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 19:42:06,839 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2018-12-08 19:42:06,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 19:42:06,863 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2018-12-08 19:42:06,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 19:42:06,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-12-08 19:42:06,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 19:42:06,870 INFO L225 Difference]: With dead ends: 38 [2018-12-08 19:42:06,870 INFO L226 Difference]: Without dead ends: 18 [2018-12-08 19:42:06,872 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 19:42:06,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-12-08 19:42:06,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-12-08 19:42:06,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-12-08 19:42:06,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2018-12-08 19:42:06,893 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 8 [2018-12-08 19:42:06,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 19:42:06,893 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-12-08 19:42:06,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 19:42:06,893 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2018-12-08 19:42:06,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-08 19:42:06,894 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 19:42:06,894 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 19:42:06,894 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 19:42:06,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:42:06,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1374165371, now seen corresponding path program 1 times [2018-12-08 19:42:06,894 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 19:42:06,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:42:06,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:42:06,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:42:06,895 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 19:42:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:42:06,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 19:42:06,914 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 19:42:06,914 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 19:42:06,914 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 19:42:06,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 19:42:06,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 19:42:06,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 19:42:06,915 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 3 states. [2018-12-08 19:42:06,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 19:42:06,928 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2018-12-08 19:42:06,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 19:42:06,928 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-12-08 19:42:06,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 19:42:06,929 INFO L225 Difference]: With dead ends: 19 [2018-12-08 19:42:06,929 INFO L226 Difference]: Without dead ends: 18 [2018-12-08 19:42:06,929 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 [2018-12-08 19:42:06,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-12-08 19:42:06,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2018-12-08 19:42:06,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-12-08 19:42:06,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-12-08 19:42:06,931 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 8 [2018-12-08 19:42:06,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 19:42:06,932 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-12-08 19:42:06,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 19:42:06,932 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-12-08 19:42:06,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-08 19:42:06,932 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 19:42:06,932 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 19:42:06,932 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 19:42:06,932 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:42:06,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1867753438, now seen corresponding path program 1 times [2018-12-08 19:42:06,932 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 19:42:06,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:42:06,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:42:06,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:42:06,933 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 19:42:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:42:06,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 19:42:06,950 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 19:42:06,950 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-08 19:42:06,951 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 12 with the following transitions: [2018-12-08 19:42:06,952 INFO L205 CegarAbsIntRunner]: [0], [4], [13], [20], [22], [24], [26], [30], [39], [40], [41] [2018-12-08 19:42:06,970 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-08 19:42:06,970 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-08 19:42:07,055 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-08 19:42:07,055 INFO L272 AbstractInterpreter]: Visited 11 different actions 29 times. Merged at 5 different actions 16 times. Widened at 1 different actions 1 times. Performed 100 root evaluator evaluations with a maximum evaluation depth of 3. Performed 100 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 4 variables. [2018-12-08 19:42:07,060 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:42:07,061 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-08 19:42:07,061 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 19:42:07,061 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3b3f3a3a-21c1-4260-b9ae-36d45207f6c6/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 [2018-12-08 19:42:07,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:42:07,067 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-08 19:42:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:42:07,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:42:07,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-08 19:42:07,096 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-08 19:42:07,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-08 19:42:07,132 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-12-08 19:42:07,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [4] total 6 [2018-12-08 19:42:07,133 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 19:42:07,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 19:42:07,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 19:42:07,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-08 19:42:07,133 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 3 states. [2018-12-08 19:42:07,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 19:42:07,140 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2018-12-08 19:42:07,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 19:42:07,140 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-12-08 19:42:07,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 19:42:07,140 INFO L225 Difference]: With dead ends: 17 [2018-12-08 19:42:07,141 INFO L226 Difference]: Without dead ends: 16 [2018-12-08 19:42:07,141 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-08 19:42:07,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-12-08 19:42:07,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-12-08 19:42:07,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-12-08 19:42:07,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2018-12-08 19:42:07,144 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2018-12-08 19:42:07,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 19:42:07,144 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2018-12-08 19:42:07,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 19:42:07,144 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2018-12-08 19:42:07,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-08 19:42:07,144 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 19:42:07,145 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 19:42:07,145 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 19:42:07,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:42:07,145 INFO L82 PathProgramCache]: Analyzing trace with hash 2065781793, now seen corresponding path program 1 times [2018-12-08 19:42:07,145 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 19:42:07,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:42:07,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:42:07,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:42:07,146 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 19:42:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:42:07,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 19:42:07,163 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 19:42:07,163 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-08 19:42:07,164 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 13 with the following transitions: [2018-12-08 19:42:07,164 INFO L205 CegarAbsIntRunner]: [0], [4], [13], [20], [22], [24], [26], [31], [32], [39], [40], [41] [2018-12-08 19:42:07,164 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-08 19:42:07,164 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-08 19:42:07,182 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-08 19:42:07,182 INFO L272 AbstractInterpreter]: Visited 12 different actions 26 times. Merged at 6 different actions 12 times. Never widened. Performed 84 root evaluator evaluations with a maximum evaluation depth of 3. Performed 84 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 4 variables. [2018-12-08 19:42:07,185 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:42:07,185 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-08 19:42:07,185 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 19:42:07,185 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3b3f3a3a-21c1-4260-b9ae-36d45207f6c6/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 19:42:07,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:42:07,191 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-08 19:42:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:42:07,197 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:42:07,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-08 19:42:07,203 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-08 19:42:07,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-08 19:42:07,226 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-12-08 19:42:07,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [4] total 6 [2018-12-08 19:42:07,226 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 19:42:07,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 19:42:07,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 19:42:07,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-08 19:42:07,227 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 3 states. [2018-12-08 19:42:07,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 19:42:07,231 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2018-12-08 19:42:07,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 19:42:07,232 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-12-08 19:42:07,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 19:42:07,232 INFO L225 Difference]: With dead ends: 16 [2018-12-08 19:42:07,232 INFO L226 Difference]: Without dead ends: 15 [2018-12-08 19:42:07,232 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-08 19:42:07,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-12-08 19:42:07,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-12-08 19:42:07,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-12-08 19:42:07,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-12-08 19:42:07,234 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2018-12-08 19:42:07,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 19:42:07,235 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-12-08 19:42:07,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 19:42:07,235 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-12-08 19:42:07,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-08 19:42:07,235 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 19:42:07,235 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 19:42:07,235 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 19:42:07,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:42:07,235 INFO L82 PathProgramCache]: Analyzing trace with hash 2065783491, now seen corresponding path program 1 times [2018-12-08 19:42:07,235 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 19:42:07,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:42:07,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:42:07,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:42:07,237 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 19:42:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:42:07,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-08 19:42:07,247 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 19:42:07,247 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 19:42:07,247 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 19:42:07,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 19:42:07,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 19:42:07,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 19:42:07,248 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 3 states. [2018-12-08 19:42:07,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 19:42:07,256 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2018-12-08 19:42:07,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 19:42:07,256 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-12-08 19:42:07,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 19:42:07,256 INFO L225 Difference]: With dead ends: 15 [2018-12-08 19:42:07,257 INFO L226 Difference]: Without dead ends: 0 [2018-12-08 19:42:07,257 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 [2018-12-08 19:42:07,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-08 19:42:07,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-08 19:42:07,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-08 19:42:07,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-08 19:42:07,257 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2018-12-08 19:42:07,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 19:42:07,257 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 19:42:07,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 19:42:07,258 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-08 19:42:07,258 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-08 19:42:07,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-08 19:42:07,280 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-08 19:42:07,280 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-08 19:42:07,280 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-08 19:42:07,281 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-08 19:42:07,281 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-08 19:42:07,281 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-08 19:42:07,281 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-12-08 19:42:07,281 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 14 27) no Hoare annotation was computed. [2018-12-08 19:42:07,281 INFO L444 ceAbstractionStarter]: At program point L21-2(lines 21 23) the Hoare annotation is: (and (<= main_~x1~0 10) (<= 0 (+ main_~x1~0 2147483648)) (<= main_~x2~0 1000)) [2018-12-08 19:42:07,281 INFO L448 ceAbstractionStarter]: For program point L21-3(lines 21 23) no Hoare annotation was computed. [2018-12-08 19:42:07,281 INFO L444 ceAbstractionStarter]: At program point L19-2(lines 19 25) the Hoare annotation is: (<= 0 (+ main_~x1~0 2147483648)) [2018-12-08 19:42:07,281 INFO L448 ceAbstractionStarter]: For program point L19-3(lines 19 25) no Hoare annotation was computed. [2018-12-08 19:42:07,281 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 14 27) no Hoare annotation was computed. [2018-12-08 19:42:07,282 INFO L448 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-12-08 19:42:07,282 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 14 27) the Hoare annotation is: true [2018-12-08 19:42:07,282 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-12-08 19:42:07,282 INFO L448 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-12-08 19:42:07,282 INFO L448 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-12-08 19:42:07,282 INFO L448 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2018-12-08 19:42:07,282 INFO L448 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-12-08 19:42:07,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 07:42:07 BoogieIcfgContainer [2018-12-08 19:42:07,292 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 19:42:07,292 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 19:42:07,292 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 19:42:07,292 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 19:42:07,292 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 07:42:06" (3/4) ... [2018-12-08 19:42:07,295 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-08 19:42:07,298 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-08 19:42:07,298 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-08 19:42:07,301 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-12-08 19:42:07,301 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-08 19:42:07,302 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-08 19:42:07,329 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_3b3f3a3a-21c1-4260-b9ae-36d45207f6c6/bin-2019/utaipan/witness.graphml [2018-12-08 19:42:07,329 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 19:42:07,329 INFO L168 Benchmark]: Toolchain (without parser) took 938.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 954.4 MB in the beginning and 1.0 GB in the end (delta: -83.4 MB). Peak memory consumption was 56.6 MB. Max. memory is 11.5 GB. [2018-12-08 19:42:07,330 INFO L168 Benchmark]: CDTParser took 0.10 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. [2018-12-08 19:42:07,330 INFO L168 Benchmark]: CACSL2BoogieTranslator took 118.93 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 19:42:07,331 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.65 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. [2018-12-08 19:42:07,331 INFO L168 Benchmark]: Boogie Preprocessor took 11.59 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. [2018-12-08 19:42:07,331 INFO L168 Benchmark]: RCFGBuilder took 145.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 943.6 MB in the beginning and 1.1 GB in the end (delta: -174.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. [2018-12-08 19:42:07,332 INFO L168 Benchmark]: TraceAbstraction took 611.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 77.0 MB). Peak memory consumption was 77.0 MB. Max. memory is 11.5 GB. [2018-12-08 19:42:07,332 INFO L168 Benchmark]: Witness Printer took 36.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-12-08 19:42:07,335 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 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 118.93 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.65 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 11.59 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. * RCFGBuilder took 145.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 943.6 MB in the beginning and 1.1 GB in the end (delta: -174.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 611.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 77.0 MB). Peak memory consumption was 77.0 MB. Max. memory is 11.5 GB. * Witness Printer took 36.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 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: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 0 <= x1 + 2147483648 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (x1 <= 10 && 0 <= x1 + 2147483648) && x2 <= 1000 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 4 error locations. SAFE Result, 0.5s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 58 SDtfs, 14 SDslu, 31 SDs, 0 SdLazy, 30 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 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, 0.1s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 9 NumberOfFragments, 21 HoareAnnotationTreeSize, 6 FomulaSimplifications, 19 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 1952 SizeOfPredicates, 2 NumberOfNonLiveVariables, 57 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 7/9 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...