./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_cba6a2b2-39ad-4fdf-8225-2d277f18ee8a/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_cba6a2b2-39ad-4fdf-8225-2d277f18ee8a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_cba6a2b2-39ad-4fdf-8225-2d277f18ee8a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_cba6a2b2-39ad-4fdf-8225-2d277f18ee8a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_cba6a2b2-39ad-4fdf-8225-2d277f18ee8a/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_cba6a2b2-39ad-4fdf-8225-2d277f18ee8a/bin/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 bc157475d6c321934f68f6b441d83c0582720461 ..................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:24:20,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:24:20,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:24:20,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:24:20,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:24:20,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:24:20,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:24:20,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:24:20,202 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:24:20,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:24:20,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:24:20,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:24:20,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:24:20,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:24:20,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:24:20,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:24:20,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:24:20,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:24:20,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:24:20,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:24:20,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:24:20,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:24:20,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:24:20,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:24:20,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:24:20,221 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:24:20,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:24:20,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:24:20,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:24:20,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:24:20,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:24:20,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:24:20,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:24:20,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:24:20,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:24:20,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:24:20,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:24:20,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:24:20,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:24:20,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:24:20,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:24:20,231 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_cba6a2b2-39ad-4fdf-8225-2d277f18ee8a/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2019-10-22 11:24:20,243 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:24:20,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:24:20,244 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:24:20,244 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:24:20,245 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:24:20,245 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:24:20,245 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:24:20,245 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:24:20,245 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:24:20,245 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:24:20,246 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:24:20,246 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:24:20,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:24:20,247 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 11:24:20,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:24:20,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:24:20,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:24:20,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:24:20,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:24:20,248 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-10-22 11:24:20,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:24:20,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:24:20,248 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:24:20,248 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:24:20,248 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:24:20,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:24:20,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:24:20,249 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:24:20,249 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:24:20,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:24:20,249 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:24:20,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:24:20,250 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:24:20,250 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:24:20,250 INFO L138 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_cba6a2b2-39ad-4fdf-8225-2d277f18ee8a/bin/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 -> bc157475d6c321934f68f6b441d83c0582720461 [2019-10-22 11:24:20,275 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:24:20,285 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:24:20,289 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:24:20,290 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:24:20,290 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:24:20,291 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_cba6a2b2-39ad-4fdf-8225-2d277f18ee8a/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c [2019-10-22 11:24:20,343 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cba6a2b2-39ad-4fdf-8225-2d277f18ee8a/bin/utaipan/data/440830c57/9d5dadb4ac07420fb2675d4671573302/FLAGb734ed092 [2019-10-22 11:24:20,704 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:24:20,704 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_cba6a2b2-39ad-4fdf-8225-2d277f18ee8a/sv-benchmarks/c/termination-crafted-lit/KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c [2019-10-22 11:24:20,710 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cba6a2b2-39ad-4fdf-8225-2d277f18ee8a/bin/utaipan/data/440830c57/9d5dadb4ac07420fb2675d4671573302/FLAGb734ed092 [2019-10-22 11:24:21,098 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_cba6a2b2-39ad-4fdf-8225-2d277f18ee8a/bin/utaipan/data/440830c57/9d5dadb4ac07420fb2675d4671573302 [2019-10-22 11:24:21,101 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:24:21,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:24:21,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:21,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:24:21,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:24:21,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:21" (1/1) ... [2019-10-22 11:24:21,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@216d7e73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:21, skipping insertion in model container [2019-10-22 11:24:21,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:21" (1/1) ... [2019-10-22 11:24:21,121 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:24:21,136 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:24:21,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:21,267 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:24:21,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:21,348 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:24:21,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:21 WrapperNode [2019-10-22 11:24:21,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:21,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:21,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:24:21,352 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:24:21,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:21" (1/1) ... [2019-10-22 11:24:21,374 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:21" (1/1) ... [2019-10-22 11:24:21,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:21,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:24:21,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:24:21,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:24:21,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:21" (1/1) ... [2019-10-22 11:24:21,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:21" (1/1) ... [2019-10-22 11:24:21,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:21" (1/1) ... [2019-10-22 11:24:21,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:21" (1/1) ... [2019-10-22 11:24:21,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:21" (1/1) ... [2019-10-22 11:24:21,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:21" (1/1) ... [2019-10-22 11:24:21,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:21" (1/1) ... [2019-10-22 11:24:21,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:24:21,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:24:21,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:24:21,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:24:21,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cba6a2b2-39ad-4fdf-8225-2d277f18ee8a/bin/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 [2019-10-22 11:24:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:24:21,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:24:21,604 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:24:21,604 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-22 11:24:21,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:21 BoogieIcfgContainer [2019-10-22 11:24:21,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:24:21,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:24:21,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:24:21,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:24:21,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:24:21" (1/3) ... [2019-10-22 11:24:21,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eb75edf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:21, skipping insertion in model container [2019-10-22 11:24:21,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:21" (2/3) ... [2019-10-22 11:24:21,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eb75edf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:21, skipping insertion in model container [2019-10-22 11:24:21,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:21" (3/3) ... [2019-10-22 11:24:21,613 INFO L109 eAbstractionObserver]: Analyzing ICFG KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c [2019-10-22 11:24:21,622 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:24:21,629 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-10-22 11:24:21,640 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-10-22 11:24:21,662 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:24:21,663 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:24:21,663 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:24:21,663 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:24:21,663 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:24:21,663 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:24:21,663 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:24:21,664 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:24:21,673 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-10-22 11:24:21,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-10-22 11:24:21,678 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:21,678 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-10-22 11:24:21,680 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:24:21,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:21,684 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2019-10-22 11:24:21,690 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:21,691 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327102129] [2019-10-22 11:24:21,691 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:21,691 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:21,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:21,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:21,815 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327102129] [2019-10-22 11:24:21,816 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:21,816 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:24:21,817 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470405823] [2019-10-22 11:24:21,829 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:24:21,830 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:21,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:24:21,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:24:21,848 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2019-10-22 11:24:21,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:21,922 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2019-10-22 11:24:21,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:24:21,924 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-10-22 11:24:21,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:21,933 INFO L225 Difference]: With dead ends: 21 [2019-10-22 11:24:21,934 INFO L226 Difference]: Without dead ends: 12 [2019-10-22 11:24:21,936 INFO L600 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 [2019-10-22 11:24:21,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-22 11:24:21,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2019-10-22 11:24:21,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-10-22 11:24:21,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-10-22 11:24:21,967 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 4 [2019-10-22 11:24:21,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:21,968 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-10-22 11:24:21,968 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:24:21,968 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2019-10-22 11:24:21,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-10-22 11:24:21,968 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:21,969 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-10-22 11:24:21,969 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:24:21,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:21,969 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2019-10-22 11:24:21,969 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:21,970 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134454794] [2019-10-22 11:24:21,970 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:21,970 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:21,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:21,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:21,997 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134454794] [2019-10-22 11:24:21,997 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:21,997 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:24:21,997 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735650716] [2019-10-22 11:24:21,998 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:24:21,999 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:21,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:24:21,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:24:21,999 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 4 states. [2019-10-22 11:24:22,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:22,087 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2019-10-22 11:24:22,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:24:22,087 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-10-22 11:24:22,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:22,088 INFO L225 Difference]: With dead ends: 13 [2019-10-22 11:24:22,088 INFO L226 Difference]: Without dead ends: 12 [2019-10-22 11:24:22,089 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:24:22,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-22 11:24:22,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2019-10-22 11:24:22,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-10-22 11:24:22,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2019-10-22 11:24:22,091 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 4 [2019-10-22 11:24:22,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:22,092 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-10-22 11:24:22,092 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:24:22,092 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2019-10-22 11:24:22,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 11:24:22,092 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:22,092 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 11:24:22,093 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:24:22,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:22,093 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2019-10-22 11:24:22,093 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:22,093 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359056435] [2019-10-22 11:24:22,094 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:22,094 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:22,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:22,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:22,123 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359056435] [2019-10-22 11:24:22,123 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:22,124 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-10-22 11:24:22,124 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421454749] [2019-10-22 11:24:22,124 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:24:22,124 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:22,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:24:22,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:24:22,125 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 3 states. [2019-10-22 11:24:22,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:22,150 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2019-10-22 11:24:22,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:24:22,150 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-10-22 11:24:22,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:22,151 INFO L225 Difference]: With dead ends: 10 [2019-10-22 11:24:22,151 INFO L226 Difference]: Without dead ends: 9 [2019-10-22 11:24:22,151 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:24:22,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-10-22 11:24:22,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-10-22 11:24:22,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-10-22 11:24:22,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2019-10-22 11:24:22,154 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 5 [2019-10-22 11:24:22,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:22,154 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2019-10-22 11:24:22,154 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:24:22,154 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2019-10-22 11:24:22,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 11:24:22,155 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:22,155 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 11:24:22,155 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:24:22,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:22,155 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2019-10-22 11:24:22,155 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:22,156 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905100851] [2019-10-22 11:24:22,156 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:22,156 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:22,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:22,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:22,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:22,202 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905100851] [2019-10-22 11:24:22,202 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:22,202 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:24:22,202 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439877258] [2019-10-22 11:24:22,202 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:24:22,203 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:22,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:24:22,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:24:22,203 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand 4 states. [2019-10-22 11:24:22,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:22,264 INFO L93 Difference]: Finished difference Result 9 states and 11 transitions. [2019-10-22 11:24:22,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:24:22,265 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-10-22 11:24:22,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:22,265 INFO L225 Difference]: With dead ends: 9 [2019-10-22 11:24:22,265 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:24:22,266 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:24:22,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:24:22,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:24:22,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:24:22,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:24:22,266 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2019-10-22 11:24:22,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:22,267 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:24:22,267 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:24:22,267 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:24:22,267 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:24:22,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 11:24:22,287 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 11:24:22,288 INFO L446 ceAbstractionStarter]: At program point L27(lines 13 28) the Hoare annotation is: true [2019-10-22 11:24:22,288 INFO L439 ceAbstractionStarter]: At program point L23-1(lines 17 26) the Hoare annotation is: (< 0 (+ (div ULTIMATE.start_main_~x~0 2) 1073741825)) [2019-10-22 11:24:22,288 INFO L443 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-10-22 11:24:22,288 INFO L443 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2019-10-22 11:24:22,288 INFO L443 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-10-22 11:24:22,288 INFO L443 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2019-10-22 11:24:22,288 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2019-10-22 11:24:22,289 INFO L443 ceAbstractionStarter]: For program point L17-2(lines 17 26) no Hoare annotation was computed. [2019-10-22 11:24:22,289 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2019-10-22 11:24:22,289 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 11:24:22,289 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 11:24:22,289 INFO L443 ceAbstractionStarter]: For program point L18(lines 18 22) no Hoare annotation was computed. [2019-10-22 11:24:22,289 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2019-10-22 11:24:22,289 INFO L443 ceAbstractionStarter]: For program point L18-2(lines 17 26) no Hoare annotation was computed. [2019-10-22 11:24:22,289 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2019-10-22 11:24:22,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:24:22 BoogieIcfgContainer [2019-10-22 11:24:22,302 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:24:22,302 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:24:22,302 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:24:22,302 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:24:22,303 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:21" (3/4) ... [2019-10-22 11:24:22,306 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:24:22,316 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 11:24:22,317 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 11:24:22,354 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_cba6a2b2-39ad-4fdf-8225-2d277f18ee8a/bin/utaipan/witness.graphml [2019-10-22 11:24:22,354 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:24:22,356 INFO L168 Benchmark]: Toolchain (without parser) took 1254.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -131.6 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:22,357 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 958.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:22,357 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -199.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:22,358 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.39 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:22,358 INFO L168 Benchmark]: Boogie Preprocessor took 20.37 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:22,358 INFO L168 Benchmark]: RCFGBuilder took 194.73 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:22,359 INFO L168 Benchmark]: TraceAbstraction took 695.12 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: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:22,359 INFO L168 Benchmark]: Witness Printer took 52.40 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:22,362 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 958.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 248.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -199.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.39 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.37 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 194.73 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 695.12 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: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. * Witness Printer took 52.40 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: 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: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 0 < x / 2 + 1073741825 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 4 error locations. Result: SAFE, OverallTime: 0.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 24 SDslu, 12 SDs, 0 SdLazy, 46 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 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, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 8 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 218 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...