./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Cairo_step2_true-no-overflow_true-termination_true-valid-memsafety.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_551b2207-43e5-49b7-9331-1d8abd0d29e8/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_551b2207-43e5-49b7-9331-1d8abd0d29e8/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_551b2207-43e5-49b7-9331-1d8abd0d29e8/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_551b2207-43e5-49b7-9331-1d8abd0d29e8/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Cairo_step2_true-no-overflow_true-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_551b2207-43e5-49b7-9331-1d8abd0d29e8/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_551b2207-43e5-49b7-9331-1d8abd0d29e8/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 c7d1dab681440b8e4fbe52aab1c781a8a0ad5fbc ...................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 07:53:43,581 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 07:53:43,583 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 07:53:43,591 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 07:53:43,591 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 07:53:43,592 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 07:53:43,592 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 07:53:43,594 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 07:53:43,595 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 07:53:43,596 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 07:53:43,596 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 07:53:43,596 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 07:53:43,597 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 07:53:43,598 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 07:53:43,599 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 07:53:43,599 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 07:53:43,600 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 07:53:43,601 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 07:53:43,602 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 07:53:43,604 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 07:53:43,604 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 07:53:43,605 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 07:53:43,607 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 07:53:43,607 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 07:53:43,607 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 07:53:43,608 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 07:53:43,609 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 07:53:43,609 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 07:53:43,610 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 07:53:43,610 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 07:53:43,610 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 07:53:43,611 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 07:53:43,611 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 07:53:43,611 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 07:53:43,612 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 07:53:43,612 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 07:53:43,613 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_551b2207-43e5-49b7-9331-1d8abd0d29e8/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-11-23 07:53:43,622 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 07:53:43,622 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 07:53:43,623 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 07:53:43,623 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 07:53:43,623 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 07:53:43,623 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 07:53:43,624 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 07:53:43,624 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 07:53:43,624 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 07:53:43,624 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 07:53:43,624 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 07:53:43,624 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 07:53:43,624 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 07:53:43,625 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 07:53:43,625 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 07:53:43,625 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 07:53:43,625 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 07:53:43,625 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 07:53:43,626 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 07:53:43,626 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 07:53:43,626 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-23 07:53:43,626 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 07:53:43,626 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 07:53:43,626 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 07:53:43,626 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 07:53:43,627 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 07:53:43,627 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 07:53:43,627 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 07:53:43,627 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 07:53:43,627 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 07:53:43,627 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 07:53:43,627 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 07:53:43,627 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 07:53:43,628 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 07:53:43,628 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 07:53:43,628 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 07:53:43,628 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_551b2207-43e5-49b7-9331-1d8abd0d29e8/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 -> c7d1dab681440b8e4fbe52aab1c781a8a0ad5fbc [2018-11-23 07:53:43,653 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 07:53:43,661 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 07:53:43,663 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 07:53:43,664 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 07:53:43,664 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 07:53:43,664 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_551b2207-43e5-49b7-9331-1d8abd0d29e8/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted/Cairo_step2_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-23 07:53:43,701 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_551b2207-43e5-49b7-9331-1d8abd0d29e8/bin-2019/utaipan/data/82463195f/29d059c31dc3482bb73a888bf1ccd923/FLAG478d3f3ee [2018-11-23 07:53:44,018 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 07:53:44,018 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_551b2207-43e5-49b7-9331-1d8abd0d29e8/sv-benchmarks/c/termination-crafted/Cairo_step2_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-23 07:53:44,022 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_551b2207-43e5-49b7-9331-1d8abd0d29e8/bin-2019/utaipan/data/82463195f/29d059c31dc3482bb73a888bf1ccd923/FLAG478d3f3ee [2018-11-23 07:53:44,032 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_551b2207-43e5-49b7-9331-1d8abd0d29e8/bin-2019/utaipan/data/82463195f/29d059c31dc3482bb73a888bf1ccd923 [2018-11-23 07:53:44,034 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 07:53:44,035 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 07:53:44,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 07:53:44,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 07:53:44,038 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 07:53:44,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:53:44" (1/1) ... [2018-11-23 07:53:44,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d37331a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:53:44, skipping insertion in model container [2018-11-23 07:53:44,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:53:44" (1/1) ... [2018-11-23 07:53:44,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 07:53:44,060 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 07:53:44,165 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 07:53:44,168 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 07:53:44,176 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 07:53:44,184 INFO L195 MainTranslator]: Completed translation [2018-11-23 07:53:44,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:53:44 WrapperNode [2018-11-23 07:53:44,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 07:53:44,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 07:53:44,185 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 07:53:44,185 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 07:53:44,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:53:44" (1/1) ... [2018-11-23 07:53:44,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:53:44" (1/1) ... [2018-11-23 07:53:44,198 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 07:53:44,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 07:53:44,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 07:53:44,198 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 07:53:44,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:53:44" (1/1) ... [2018-11-23 07:53:44,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:53:44" (1/1) ... [2018-11-23 07:53:44,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:53:44" (1/1) ... [2018-11-23 07:53:44,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:53:44" (1/1) ... [2018-11-23 07:53:44,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:53:44" (1/1) ... [2018-11-23 07:53:44,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:53:44" (1/1) ... [2018-11-23 07:53:44,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:53:44" (1/1) ... [2018-11-23 07:53:44,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 07:53:44,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 07:53:44,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 07:53:44,211 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 07:53:44,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:53:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_551b2207-43e5-49b7-9331-1d8abd0d29e8/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 [2018-11-23 07:53:44,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 07:53:44,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 07:53:44,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 07:53:44,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 07:53:44,290 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 07:53:44,290 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 07:53:44,373 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 07:53:44,373 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-23 07:53:44,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:53:44 BoogieIcfgContainer [2018-11-23 07:53:44,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 07:53:44,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 07:53:44,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 07:53:44,376 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 07:53:44,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 07:53:44" (1/3) ... [2018-11-23 07:53:44,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa22a2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:53:44, skipping insertion in model container [2018-11-23 07:53:44,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:53:44" (2/3) ... [2018-11-23 07:53:44,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa22a2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:53:44, skipping insertion in model container [2018-11-23 07:53:44,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:53:44" (3/3) ... [2018-11-23 07:53:44,378 INFO L112 eAbstractionObserver]: Analyzing ICFG Cairo_step2_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-23 07:53:44,384 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 07:53:44,388 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-11-23 07:53:44,401 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-11-23 07:53:44,426 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 07:53:44,426 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 07:53:44,426 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 07:53:44,426 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 07:53:44,427 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 07:53:44,427 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 07:53:44,427 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 07:53:44,427 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 07:53:44,440 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2018-11-23 07:53:44,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-23 07:53:44,444 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:53:44,445 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:53:44,447 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 07:53:44,451 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:53:44,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1917932215, now seen corresponding path program 1 times [2018-11-23 07:53:44,453 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 07:53:44,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:53:44,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:53:44,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:53:44,486 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 07:53:44,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:53:44,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 07:53:44,541 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 07:53:44,541 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 07:53:44,541 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 07:53:44,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 07:53:44,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 07:53:44,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 07:53:44,554 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2018-11-23 07:53:44,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:53:44,592 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2018-11-23 07:53:44,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 07:53:44,594 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-11-23 07:53:44,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:53:44,599 INFO L225 Difference]: With dead ends: 21 [2018-11-23 07:53:44,599 INFO L226 Difference]: Without dead ends: 10 [2018-11-23 07:53:44,601 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 07:53:44,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-11-23 07:53:44,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-11-23 07:53:44,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-11-23 07:53:44,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-11-23 07:53:44,623 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-11-23 07:53:44,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:53:44,624 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-11-23 07:53:44,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 07:53:44,624 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-11-23 07:53:44,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-23 07:53:44,624 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:53:44,624 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:53:44,624 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 07:53:44,625 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:53:44,625 INFO L82 PathProgramCache]: Analyzing trace with hash 673643529, now seen corresponding path program 1 times [2018-11-23 07:53:44,625 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 07:53:44,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:53:44,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:53:44,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:53:44,626 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 07:53:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:53:44,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 07:53:44,647 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 07:53:44,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 07:53:44,647 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 07:53:44,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 07:53:44,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 07:53:44,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 07:53:44,649 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 3 states. [2018-11-23 07:53:44,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:53:44,666 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-11-23 07:53:44,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 07:53:44,667 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-23 07:53:44,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:53:44,668 INFO L225 Difference]: With dead ends: 14 [2018-11-23 07:53:44,668 INFO L226 Difference]: Without dead ends: 13 [2018-11-23 07:53:44,668 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 [2018-11-23 07:53:44,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-23 07:53:44,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-23 07:53:44,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-23 07:53:44,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-23 07:53:44,672 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 9 [2018-11-23 07:53:44,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:53:44,672 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-23 07:53:44,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 07:53:44,672 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-23 07:53:44,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-23 07:53:44,673 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:53:44,673 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:53:44,673 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 07:53:44,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:53:44,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1867756025, now seen corresponding path program 1 times [2018-11-23 07:53:44,673 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 07:53:44,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:53:44,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:53:44,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:53:44,675 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 07:53:44,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:53:44,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 07:53:44,709 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:53:44,709 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 07:53:44,710 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 13 with the following transitions: [2018-11-23 07:53:44,711 INFO L202 CegarAbsIntRunner]: [0], [4], [7], [16], [18], [19], [20], [29], [30], [31] [2018-11-23 07:53:44,732 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 07:53:44,732 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 07:53:44,804 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 07:53:44,805 INFO L272 AbstractInterpreter]: Visited 10 different actions 10 times. Never merged. Never widened. Performed 20 root evaluator evaluations with a maximum evaluation depth of 3. Performed 20 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 2 variables. [2018-11-23 07:53:44,810 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:53:44,811 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 07:53:44,811 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:53:44,811 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_551b2207-43e5-49b7-9331-1d8abd0d29e8/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 [2018-11-23 07:53:44,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:53:44,822 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 07:53:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:53:44,834 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:53:44,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 07:53:44,857 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 07:53:44,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 07:53:44,910 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 07:53:44,910 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2018-11-23 07:53:44,911 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 07:53:44,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 07:53:44,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 07:53:44,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-23 07:53:44,911 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2018-11-23 07:53:44,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:53:44,921 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-11-23 07:53:44,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 07:53:44,921 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-11-23 07:53:44,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:53:44,921 INFO L225 Difference]: With dead ends: 13 [2018-11-23 07:53:44,921 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 07:53:44,922 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-23 07:53:44,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 07:53:44,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 07:53:44,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 07:53:44,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 07:53:44,923 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2018-11-23 07:53:44,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:53:44,923 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 07:53:44,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 07:53:44,923 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 07:53:44,923 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 07:53:44,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 07:53:44,979 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 07:53:44,979 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 07:53:44,980 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 07:53:44,980 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 07:53:44,980 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 07:53:44,980 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 07:53:44,980 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 11 21) the Hoare annotation is: true [2018-11-23 07:53:44,980 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 11 21) no Hoare annotation was computed. [2018-11-23 07:53:44,980 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2018-11-23 07:53:44,980 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2018-11-23 07:53:44,980 INFO L448 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-11-23 07:53:44,981 INFO L448 ceAbstractionStarter]: For program point L17-1(line 17) no Hoare annotation was computed. [2018-11-23 07:53:44,981 INFO L448 ceAbstractionStarter]: For program point L15(lines 15 19) no Hoare annotation was computed. [2018-11-23 07:53:44,981 INFO L444 ceAbstractionStarter]: At program point L16-2(lines 16 18) the Hoare annotation is: (and (<= main_~x~0 2147483647) (<= 0 (+ main_~x~0 1))) [2018-11-23 07:53:44,981 INFO L448 ceAbstractionStarter]: For program point L15-1(lines 15 19) no Hoare annotation was computed. [2018-11-23 07:53:44,981 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 11 21) no Hoare annotation was computed. [2018-11-23 07:53:44,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 07:53:44 BoogieIcfgContainer [2018-11-23 07:53:44,990 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 07:53:44,990 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 07:53:44,990 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 07:53:44,990 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 07:53:44,991 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:53:44" (3/4) ... [2018-11-23 07:53:44,993 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 07:53:44,997 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 07:53:44,997 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 07:53:45,000 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-23 07:53:45,000 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-23 07:53:45,000 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 07:53:45,027 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_551b2207-43e5-49b7-9331-1d8abd0d29e8/bin-2019/utaipan/witness.graphml [2018-11-23 07:53:45,028 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 07:53:45,028 INFO L168 Benchmark]: Toolchain (without parser) took 993.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 959.8 MB in the beginning and 1.1 GB in the end (delta: -121.1 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. [2018-11-23 07:53:45,029 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 07:53:45,029 INFO L168 Benchmark]: CACSL2BoogieTranslator took 149.09 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 949.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 07:53:45,030 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.85 ms. Allocated memory is still 1.0 GB. Free memory is still 949.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 07:53:45,030 INFO L168 Benchmark]: Boogie Preprocessor took 12.34 ms. Allocated memory is still 1.0 GB. Free memory was 949.1 MB in the beginning and 946.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 07:53:45,031 INFO L168 Benchmark]: RCFGBuilder took 162.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 946.4 MB in the beginning and 1.1 GB in the end (delta: -201.2 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-23 07:53:45,031 INFO L168 Benchmark]: TraceAbstraction took 615.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 56.9 MB). Peak memory consumption was 56.9 MB. Max. memory is 11.5 GB. [2018-11-23 07:53:45,032 INFO L168 Benchmark]: Witness Printer took 37.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2018-11-23 07:53:45,034 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 149.09 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 949.1 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 12.85 ms. Allocated memory is still 1.0 GB. Free memory is still 949.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.34 ms. Allocated memory is still 1.0 GB. Free memory was 949.1 MB in the beginning and 946.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 162.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 946.4 MB in the beginning and 1.1 GB in the end (delta: -201.2 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 615.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 56.9 MB). Peak memory consumption was 56.9 MB. Max. memory is 11.5 GB. * Witness Printer took 37.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: x <= 2147483647 && 0 <= x + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 16 locations, 2 error locations. SAFE Result, 0.5s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 6 SDslu, 18 SDs, 0 SdLazy, 21 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 6 NumberOfFragments, 13 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 1226 SizeOfPredicates, 1 NumberOfNonLiveVariables, 25 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/9 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...