./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified_false-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_8d9c5aa6-90fa-4ed0-b656-79dfa0cf026d/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8d9c5aa6-90fa-4ed0-b656-79dfa0cf026d/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8d9c5aa6-90fa-4ed0-b656-79dfa0cf026d/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8d9c5aa6-90fa-4ed0-b656-79dfa0cf026d/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified_false-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_8d9c5aa6-90fa-4ed0-b656-79dfa0cf026d/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8d9c5aa6-90fa-4ed0-b656-79dfa0cf026d/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 f55c3c29f65baba8ba49ec35fe2e62008dfb74b3 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 08:58:26,213 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 08:58:26,214 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 08:58:26,223 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 08:58:26,223 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 08:58:26,224 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 08:58:26,224 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 08:58:26,225 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 08:58:26,227 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 08:58:26,227 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 08:58:26,228 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 08:58:26,228 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 08:58:26,229 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 08:58:26,229 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 08:58:26,230 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 08:58:26,230 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 08:58:26,231 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 08:58:26,232 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 08:58:26,233 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 08:58:26,234 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 08:58:26,235 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 08:58:26,236 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 08:58:26,237 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 08:58:26,238 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 08:58:26,238 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 08:58:26,238 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 08:58:26,239 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 08:58:26,240 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 08:58:26,240 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 08:58:26,241 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 08:58:26,241 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 08:58:26,241 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 08:58:26,242 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 08:58:26,242 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 08:58:26,242 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 08:58:26,243 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 08:58:26,243 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8d9c5aa6-90fa-4ed0-b656-79dfa0cf026d/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-11-10 08:58:26,252 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 08:58:26,252 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 08:58:26,253 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 08:58:26,253 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 08:58:26,253 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 08:58:26,253 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 08:58:26,254 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 08:58:26,254 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 08:58:26,254 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 08:58:26,254 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 08:58:26,254 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 08:58:26,255 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 08:58:26,255 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 08:58:26,255 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 08:58:26,255 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 08:58:26,255 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 08:58:26,255 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 08:58:26,255 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 08:58:26,256 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-10 08:58:26,256 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 08:58:26,256 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 08:58:26,256 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 08:58:26,256 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 08:58:26,256 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 08:58:26,256 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 08:58:26,257 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 08:58:26,257 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 08:58:26,257 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 08:58:26,257 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 08:58:26,257 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 08:58:26,257 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 08:58:26,257 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 08:58:26,257 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 08:58:26,258 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_8d9c5aa6-90fa-4ed0-b656-79dfa0cf026d/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 -> f55c3c29f65baba8ba49ec35fe2e62008dfb74b3 [2018-11-10 08:58:26,281 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 08:58:26,290 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 08:58:26,293 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 08:58:26,294 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 08:58:26,294 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 08:58:26,295 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8d9c5aa6-90fa-4ed0-b656-79dfa0cf026d/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified_false-termination_true-no-overflow.c [2018-11-10 08:58:26,329 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8d9c5aa6-90fa-4ed0-b656-79dfa0cf026d/bin-2019/utaipan/data/0e7c6ae95/a51ab3dff0144cc7baae8bec35aeb82b/FLAGe442e8ee2 [2018-11-10 08:58:26,620 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 08:58:26,620 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8d9c5aa6-90fa-4ed0-b656-79dfa0cf026d/sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified_false-termination_true-no-overflow.c [2018-11-10 08:58:26,625 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8d9c5aa6-90fa-4ed0-b656-79dfa0cf026d/bin-2019/utaipan/data/0e7c6ae95/a51ab3dff0144cc7baae8bec35aeb82b/FLAGe442e8ee2 [2018-11-10 08:58:26,632 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8d9c5aa6-90fa-4ed0-b656-79dfa0cf026d/bin-2019/utaipan/data/0e7c6ae95/a51ab3dff0144cc7baae8bec35aeb82b [2018-11-10 08:58:26,634 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 08:58:26,635 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 08:58:26,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 08:58:26,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 08:58:26,638 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 08:58:26,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 08:58:26" (1/1) ... [2018-11-10 08:58:26,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ac897aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:58:26, skipping insertion in model container [2018-11-10 08:58:26,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 08:58:26" (1/1) ... [2018-11-10 08:58:26,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 08:58:26,657 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 08:58:26,744 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 08:58:26,746 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 08:58:26,754 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 08:58:26,761 INFO L193 MainTranslator]: Completed translation [2018-11-10 08:58:26,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:58:26 WrapperNode [2018-11-10 08:58:26,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 08:58:26,762 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 08:58:26,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 08:58:26,762 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 08:58:26,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:58:26" (1/1) ... [2018-11-10 08:58:26,773 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:58:26" (1/1) ... [2018-11-10 08:58:26,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 08:58:26,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 08:58:26,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 08:58:26,779 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 08:58:26,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:58:26" (1/1) ... [2018-11-10 08:58:26,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:58:26" (1/1) ... [2018-11-10 08:58:26,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:58:26" (1/1) ... [2018-11-10 08:58:26,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:58:26" (1/1) ... [2018-11-10 08:58:26,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:58:26" (1/1) ... [2018-11-10 08:58:26,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:58:26" (1/1) ... [2018-11-10 08:58:26,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:58:26" (1/1) ... [2018-11-10 08:58:26,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 08:58:26,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 08:58:26,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 08:58:26,795 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 08:58:26,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:58:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8d9c5aa6-90fa-4ed0-b656-79dfa0cf026d/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 [2018-11-10 08:58:26,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 08:58:26,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 08:58:26,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 08:58:26,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 08:58:26,875 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 08:58:26,875 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 08:58:26,991 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 08:58:26,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 08:58:26 BoogieIcfgContainer [2018-11-10 08:58:26,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 08:58:26,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 08:58:26,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 08:58:26,994 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 08:58:26,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 08:58:26" (1/3) ... [2018-11-10 08:58:26,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@279be019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 08:58:26, skipping insertion in model container [2018-11-10 08:58:26,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:58:26" (2/3) ... [2018-11-10 08:58:26,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@279be019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 08:58:26, skipping insertion in model container [2018-11-10 08:58:26,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 08:58:26" (3/3) ... [2018-11-10 08:58:26,997 INFO L112 eAbstractionObserver]: Analyzing ICFG BradleyMannaSipma-CAV2005-Fig1-modified_false-termination_true-no-overflow.c [2018-11-10 08:58:27,002 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 08:58:27,008 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-10 08:58:27,017 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-10 08:58:27,037 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 08:58:27,037 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 08:58:27,037 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 08:58:27,037 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 08:58:27,037 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 08:58:27,037 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 08:58:27,037 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 08:58:27,037 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 08:58:27,052 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-11-10 08:58:27,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 08:58:27,056 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:58:27,057 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:58:27,058 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 08:58:27,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:58:27,062 INFO L82 PathProgramCache]: Analyzing trace with hash 409964900, now seen corresponding path program 1 times [2018-11-10 08:58:27,064 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 08:58:27,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:58:27,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:58:27,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:58:27,100 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 08:58:27,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:58:27,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:58:27,158 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 08:58:27,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 08:58:27,158 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 08:58:27,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 08:58:27,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 08:58:27,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 08:58:27,170 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 4 states. [2018-11-10 08:58:27,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:58:27,238 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2018-11-10 08:58:27,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 08:58:27,239 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-11-10 08:58:27,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:58:27,245 INFO L225 Difference]: With dead ends: 35 [2018-11-10 08:58:27,245 INFO L226 Difference]: Without dead ends: 20 [2018-11-10 08:58:27,247 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-10 08:58:27,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-10 08:58:27,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-11-10 08:58:27,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-10 08:58:27,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-11-10 08:58:27,268 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 10 [2018-11-10 08:58:27,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:58:27,269 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-11-10 08:58:27,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 08:58:27,269 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-11-10 08:58:27,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 08:58:27,269 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:58:27,269 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:58:27,270 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 08:58:27,270 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:58:27,270 INFO L82 PathProgramCache]: Analyzing trace with hash 409965092, now seen corresponding path program 1 times [2018-11-10 08:58:27,270 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 08:58:27,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:58:27,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:58:27,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:58:27,271 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 08:58:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:58:27,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:58:27,298 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 08:58:27,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 08:58:27,298 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 08:58:27,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 08:58:27,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 08:58:27,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 08:58:27,301 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 4 states. [2018-11-10 08:58:27,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:58:27,358 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2018-11-10 08:58:27,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 08:58:27,359 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-11-10 08:58:27,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:58:27,359 INFO L225 Difference]: With dead ends: 22 [2018-11-10 08:58:27,359 INFO L226 Difference]: Without dead ends: 20 [2018-11-10 08:58:27,360 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-10 08:58:27,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-10 08:58:27,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-11-10 08:58:27,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-10 08:58:27,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-11-10 08:58:27,364 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 10 [2018-11-10 08:58:27,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:58:27,364 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-11-10 08:58:27,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 08:58:27,364 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-11-10 08:58:27,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-10 08:58:27,365 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:58:27,365 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:58:27,365 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 08:58:27,365 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:58:27,366 INFO L82 PathProgramCache]: Analyzing trace with hash -246154182, now seen corresponding path program 1 times [2018-11-10 08:58:27,366 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 08:58:27,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:58:27,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:58:27,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:58:27,367 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 08:58:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:58:27,411 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:58:27,411 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 08:58:27,411 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 08:58:27,412 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-11-10 08:58:27,413 INFO L202 CegarAbsIntRunner]: [0], [4], [7], [11], [17], [20], [21], [22], [24], [40], [41], [42] [2018-11-10 08:58:27,446 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 08:58:27,446 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 08:58:27,525 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-10 08:58:27,526 INFO L272 AbstractInterpreter]: Visited 12 different actions 15 times. Merged at 3 different actions 3 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 4 variables. [2018-11-10 08:58:27,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:58:27,539 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-10 08:58:27,591 INFO L219 lantSequenceWeakener]: Could never weaken! [2018-11-10 08:58:27,592 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-10 08:58:27,646 INFO L415 sIntCurrentIteration]: We unified 14 AI predicates to 14 [2018-11-10 08:58:27,646 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-10 08:58:27,647 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 08:58:27,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2018-11-10 08:58:27,647 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 08:58:27,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 08:58:27,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 08:58:27,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-10 08:58:27,648 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 6 states. [2018-11-10 08:58:27,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:58:27,757 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-11-10 08:58:27,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 08:58:27,757 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-11-10 08:58:27,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:58:27,757 INFO L225 Difference]: With dead ends: 29 [2018-11-10 08:58:27,757 INFO L226 Difference]: Without dead ends: 28 [2018-11-10 08:58:27,758 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-10 08:58:27,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-10 08:58:27,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2018-11-10 08:58:27,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-10 08:58:27,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2018-11-10 08:58:27,762 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2018-11-10 08:58:27,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:58:27,762 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2018-11-10 08:58:27,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 08:58:27,763 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2018-11-10 08:58:27,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-10 08:58:27,763 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:58:27,763 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:58:27,764 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 08:58:27,764 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:58:27,764 INFO L82 PathProgramCache]: Analyzing trace with hash -246153990, now seen corresponding path program 1 times [2018-11-10 08:58:27,764 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 08:58:27,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:58:27,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:58:27,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:58:27,765 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 08:58:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:58:27,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:58:27,799 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 08:58:27,799 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 08:58:27,800 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-11-10 08:58:27,800 INFO L202 CegarAbsIntRunner]: [0], [4], [7], [11], [17], [20], [22], [24], [26], [27], [40], [41], [42] [2018-11-10 08:58:27,801 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 08:58:27,801 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 08:58:27,813 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-10 08:58:27,813 INFO L272 AbstractInterpreter]: Visited 13 different actions 18 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 4 variables. [2018-11-10 08:58:27,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:58:27,818 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-10 08:58:27,818 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 08:58:27,818 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8d9c5aa6-90fa-4ed0-b656-79dfa0cf026d/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 [2018-11-10 08:58:27,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:58:27,827 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 08:58:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:58:27,839 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:58:27,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:58:27,882 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 08:58:27,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:58:27,943 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 08:58:27,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2018-11-10 08:58:27,944 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 08:58:27,944 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-10 08:58:27,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-10 08:58:27,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-11-10 08:58:27,944 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 8 states. [2018-11-10 08:58:28,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:58:28,064 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2018-11-10 08:58:28,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-10 08:58:28,065 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2018-11-10 08:58:28,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:58:28,066 INFO L225 Difference]: With dead ends: 60 [2018-11-10 08:58:28,066 INFO L226 Difference]: Without dead ends: 59 [2018-11-10 08:58:28,067 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2018-11-10 08:58:28,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-11-10 08:58:28,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 42. [2018-11-10 08:58:28,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-10 08:58:28,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2018-11-10 08:58:28,073 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 15 [2018-11-10 08:58:28,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:58:28,073 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2018-11-10 08:58:28,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-10 08:58:28,074 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2018-11-10 08:58:28,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-10 08:58:28,074 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:58:28,074 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:58:28,074 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 08:58:28,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:58:28,075 INFO L82 PathProgramCache]: Analyzing trace with hash 961216640, now seen corresponding path program 1 times [2018-11-10 08:58:28,075 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 08:58:28,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:58:28,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:58:28,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:58:28,076 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 08:58:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:58:28,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:58:28,105 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 08:58:28,105 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 08:58:28,105 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-11-10 08:58:28,105 INFO L202 CegarAbsIntRunner]: [0], [4], [7], [11], [17], [20], [21], [26], [28], [30], [40], [41], [42] [2018-11-10 08:58:28,106 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 08:58:28,106 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 08:58:28,123 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-10 08:58:28,123 INFO L272 AbstractInterpreter]: Visited 13 different actions 25 times. Merged at 7 different actions 11 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 4 variables. [2018-11-10 08:58:28,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:58:28,124 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-10 08:58:28,125 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 08:58:28,125 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8d9c5aa6-90fa-4ed0-b656-79dfa0cf026d/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 08:58:28,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:58:28,130 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 08:58:28,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:58:28,135 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:58:28,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:58:28,205 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 08:58:28,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:58:28,233 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-10 08:58:28,234 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2018-11-10 08:58:28,234 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 08:58:28,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 08:58:28,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 08:58:28,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-10 08:58:28,235 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 5 states. [2018-11-10 08:58:28,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:58:28,257 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2018-11-10 08:58:28,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 08:58:28,258 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-11-10 08:58:28,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:58:28,259 INFO L225 Difference]: With dead ends: 42 [2018-11-10 08:58:28,259 INFO L226 Difference]: Without dead ends: 41 [2018-11-10 08:58:28,260 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-11-10 08:58:28,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-10 08:58:28,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 31. [2018-11-10 08:58:28,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-10 08:58:28,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2018-11-10 08:58:28,265 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 15 [2018-11-10 08:58:28,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:58:28,265 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2018-11-10 08:58:28,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 08:58:28,265 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2018-11-10 08:58:28,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-10 08:58:28,266 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:58:28,266 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:58:28,266 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 08:58:28,266 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:58:28,266 INFO L82 PathProgramCache]: Analyzing trace with hash 961216832, now seen corresponding path program 1 times [2018-11-10 08:58:28,266 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 08:58:28,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:58:28,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:58:28,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:58:28,268 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 08:58:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:58:28,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:58:28,293 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 08:58:28,293 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 08:58:28,293 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-11-10 08:58:28,294 INFO L202 CegarAbsIntRunner]: [0], [4], [7], [11], [17], [26], [27], [28], [30], [40], [41], [42] [2018-11-10 08:58:28,294 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 08:58:28,295 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 08:58:28,310 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-10 08:58:28,310 INFO L272 AbstractInterpreter]: Visited 12 different actions 21 times. Merged at 5 different actions 8 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 4 variables. [2018-11-10 08:58:28,312 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:58:28,313 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-10 08:58:28,336 INFO L219 lantSequenceWeakener]: Could never weaken! [2018-11-10 08:58:28,336 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-10 08:58:28,372 INFO L415 sIntCurrentIteration]: We unified 14 AI predicates to 14 [2018-11-10 08:58:28,372 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-10 08:58:28,372 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 08:58:28,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2018-11-10 08:58:28,372 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 08:58:28,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 08:58:28,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 08:58:28,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-10 08:58:28,373 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 6 states. [2018-11-10 08:58:28,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:58:28,489 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2018-11-10 08:58:28,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 08:58:28,489 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-11-10 08:58:28,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:58:28,490 INFO L225 Difference]: With dead ends: 40 [2018-11-10 08:58:28,490 INFO L226 Difference]: Without dead ends: 39 [2018-11-10 08:58:28,490 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-10 08:58:28,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-10 08:58:28,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 28. [2018-11-10 08:58:28,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-10 08:58:28,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2018-11-10 08:58:28,493 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 15 [2018-11-10 08:58:28,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:58:28,494 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2018-11-10 08:58:28,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 08:58:28,494 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2018-11-10 08:58:28,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-10 08:58:28,496 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:58:28,496 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:58:28,497 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 08:58:28,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:58:28,497 INFO L82 PathProgramCache]: Analyzing trace with hash -757382272, now seen corresponding path program 1 times [2018-11-10 08:58:28,497 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 08:58:28,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:58:28,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:58:28,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:58:28,498 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 08:58:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:58:28,565 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:58:28,565 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 08:58:28,565 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 08:58:28,566 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 26 with the following transitions: [2018-11-10 08:58:28,566 INFO L202 CegarAbsIntRunner]: [0], [4], [7], [11], [17], [20], [22], [24], [26], [27], [28], [30], [40], [41], [42] [2018-11-10 08:58:28,567 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 08:58:28,567 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 08:58:28,639 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-10 08:58:28,639 INFO L272 AbstractInterpreter]: Visited 15 different actions 94 times. Merged at 9 different actions 68 times. Widened at 2 different actions 4 times. Found 12 fixpoints after 4 different actions. Largest state had 4 variables. [2018-11-10 08:58:28,670 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:58:28,671 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-10 08:58:28,671 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 08:58:28,671 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8d9c5aa6-90fa-4ed0-b656-79dfa0cf026d/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 08:58:28,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:58:28,680 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 08:58:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:58:28,693 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:58:28,741 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:58:28,741 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 08:58:28,822 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:58:28,837 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 08:58:28,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2018-11-10 08:58:28,838 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 08:58:28,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-10 08:58:28,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-10 08:58:28,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-11-10 08:58:28,839 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 11 states. [2018-11-10 08:58:29,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:58:29,203 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2018-11-10 08:58:29,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-10 08:58:29,203 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-11-10 08:58:29,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:58:29,204 INFO L225 Difference]: With dead ends: 71 [2018-11-10 08:58:29,204 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 08:58:29,205 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=511, Invalid=1129, Unknown=0, NotChecked=0, Total=1640 [2018-11-10 08:58:29,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 08:58:29,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 08:58:29,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 08:58:29,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 08:58:29,206 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-11-10 08:58:29,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:58:29,207 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 08:58:29,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-10 08:58:29,207 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 08:58:29,207 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 08:58:29,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 08:58:29,351 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 08:58:29,351 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 08:58:29,352 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 08:58:29,352 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 08:58:29,352 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 08:58:29,352 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 08:58:29,352 INFO L425 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2018-11-10 08:58:29,352 INFO L425 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-11-10 08:58:29,352 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 16 30) no Hoare annotation was computed. [2018-11-10 08:58:29,354 INFO L425 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2018-11-10 08:58:29,354 INFO L425 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-11-10 08:58:29,354 INFO L425 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-11-10 08:58:29,354 INFO L425 ceAbstractionStarter]: For program point L21-1(lines 21 27) no Hoare annotation was computed. [2018-11-10 08:58:29,354 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-11-10 08:58:29,354 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 16 30) no Hoare annotation was computed. [2018-11-10 08:58:29,354 INFO L425 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2018-11-10 08:58:29,354 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 16 30) the Hoare annotation is: true [2018-11-10 08:58:29,354 INFO L425 ceAbstractionStarter]: For program point L22(lines 22 26) no Hoare annotation was computed. [2018-11-10 08:58:29,355 INFO L425 ceAbstractionStarter]: For program point L20(lines 20 28) no Hoare annotation was computed. [2018-11-10 08:58:29,355 INFO L421 ceAbstractionStarter]: At program point L22-2(lines 21 27) the Hoare annotation is: (and (<= 0 (* 2 main_~y1~0)) (<= 0 main_~y2~0) (<= main_~y2~0 2147483647) (<= main_~y1~0 2147483647)) [2018-11-10 08:58:29,355 INFO L425 ceAbstractionStarter]: For program point L20-1(lines 20 28) no Hoare annotation was computed. [2018-11-10 08:58:29,355 INFO L425 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-11-10 08:58:29,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 08:58:29 BoogieIcfgContainer [2018-11-10 08:58:29,361 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 08:58:29,362 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 08:58:29,362 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 08:58:29,362 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 08:58:29,362 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 08:58:26" (3/4) ... [2018-11-10 08:58:29,364 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 08:58:29,367 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 08:58:29,368 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 08:58:29,370 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-10 08:58:29,370 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-10 08:58:29,370 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 08:58:29,397 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_8d9c5aa6-90fa-4ed0-b656-79dfa0cf026d/bin-2019/utaipan/witness.graphml [2018-11-10 08:58:29,397 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 08:58:29,397 INFO L168 Benchmark]: Toolchain (without parser) took 2762.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 207.1 MB). Free memory was 959.2 MB in the beginning and 1.2 GB in the end (delta: -214.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 08:58:29,398 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 08:58:29,399 INFO L168 Benchmark]: CACSL2BoogieTranslator took 126.45 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 08:58:29,399 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.98 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 08:58:29,399 INFO L168 Benchmark]: Boogie Preprocessor took 15.86 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 08:58:29,399 INFO L168 Benchmark]: RCFGBuilder took 197.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -173.0 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2018-11-10 08:58:29,400 INFO L168 Benchmark]: TraceAbstraction took 2369.21 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -60.1 MB). Peak memory consumption was 333.0 MB. Max. memory is 11.5 GB. [2018-11-10 08:58:29,400 INFO L168 Benchmark]: Witness Printer took 35.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-10 08:58:29,402 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 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 126.45 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.4 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 15.98 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.86 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 197.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -173.0 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2369.21 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -60.1 MB). Peak memory consumption was 333.0 MB. Max. memory is 11.5 GB. * Witness Printer took 35.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 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: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: 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: 21]: Loop Invariant Derived loop invariant: ((0 <= 2 * y1 && 0 <= y2) && y2 <= 2147483647) && y1 <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 22 locations, 4 error locations. SAFE Result, 2.3s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 60 SDtfs, 167 SDslu, 131 SDs, 0 SdLazy, 333 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 199 GetRequests, 121 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 5 AbstIntIterations, 2 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.14285714285714285 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 42 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 15 NumberOfFragments, 20 HoareAnnotationTreeSize, 5 FomulaSimplifications, 1421 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 1024 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 202 ConstructedInterpolants, 15 QuantifiedInterpolants, 19486 SizeOfPredicates, 6 NumberOfNonLiveVariables, 107 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 20/89 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...