./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3_true-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_9c0514ad-a875-45a0-ab0e-f413877ecd39/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9c0514ad-a875-45a0-ab0e-f413877ecd39/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9c0514ad-a875-45a0-ab0e-f413877ecd39/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9c0514ad-a875-45a0-ab0e-f413877ecd39/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_9c0514ad-a875-45a0-ab0e-f413877ecd39/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9c0514ad-a875-45a0-ab0e-f413877ecd39/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 500cb8735f650eb0e7c33062ddc23c2166b17f19 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 05:43:16,329 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 05:43:16,331 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 05:43:16,340 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 05:43:16,340 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 05:43:16,341 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 05:43:16,342 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 05:43:16,344 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 05:43:16,345 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 05:43:16,346 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 05:43:16,347 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 05:43:16,347 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 05:43:16,348 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 05:43:16,349 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 05:43:16,350 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 05:43:16,351 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 05:43:16,352 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 05:43:16,354 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 05:43:16,356 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 05:43:16,358 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 05:43:16,359 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 05:43:16,360 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 05:43:16,363 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 05:43:16,363 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 05:43:16,363 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 05:43:16,364 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 05:43:16,365 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 05:43:16,366 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 05:43:16,366 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 05:43:16,368 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 05:43:16,368 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 05:43:16,369 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 05:43:16,369 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 05:43:16,369 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 05:43:16,370 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 05:43:16,371 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 05:43:16,371 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9c0514ad-a875-45a0-ab0e-f413877ecd39/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-10-27 05:43:16,383 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 05:43:16,384 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 05:43:16,384 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 05:43:16,384 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 05:43:16,384 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 05:43:16,385 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 05:43:16,385 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 05:43:16,385 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 05:43:16,385 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 05:43:16,385 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 05:43:16,385 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 05:43:16,386 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 05:43:16,386 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 05:43:16,387 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 05:43:16,388 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 05:43:16,388 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 05:43:16,388 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 05:43:16,388 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 05:43:16,388 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-10-27 05:43:16,388 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 05:43:16,389 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 05:43:16,389 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 05:43:16,389 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 05:43:16,389 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 05:43:16,389 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 05:43:16,389 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:43:16,390 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 05:43:16,390 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 05:43:16,390 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 05:43:16,390 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 05:43:16,390 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 05:43:16,390 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 05:43:16,390 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 05:43:16,391 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_9c0514ad-a875-45a0-ab0e-f413877ecd39/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 -> 500cb8735f650eb0e7c33062ddc23c2166b17f19 [2018-10-27 05:43:16,419 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 05:43:16,428 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 05:43:16,431 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 05:43:16,432 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 05:43:16,432 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 05:43:16,433 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9c0514ad-a875-45a0-ab0e-f413877ecd39/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3_true-termination_true-no-overflow.c [2018-10-27 05:43:16,475 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9c0514ad-a875-45a0-ab0e-f413877ecd39/bin-2019/utaipan/data/a01b961e4/8be438b3fe394200af6072157f79b089/FLAG90202888a [2018-10-27 05:43:16,884 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 05:43:16,884 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9c0514ad-a875-45a0-ab0e-f413877ecd39/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3_true-termination_true-no-overflow.c [2018-10-27 05:43:16,890 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9c0514ad-a875-45a0-ab0e-f413877ecd39/bin-2019/utaipan/data/a01b961e4/8be438b3fe394200af6072157f79b089/FLAG90202888a [2018-10-27 05:43:16,903 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9c0514ad-a875-45a0-ab0e-f413877ecd39/bin-2019/utaipan/data/a01b961e4/8be438b3fe394200af6072157f79b089 [2018-10-27 05:43:16,906 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 05:43:16,907 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 05:43:16,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 05:43:16,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 05:43:16,912 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 05:43:16,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:43:16" (1/1) ... [2018-10-27 05:43:16,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2adc1ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:16, skipping insertion in model container [2018-10-27 05:43:16,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:43:16" (1/1) ... [2018-10-27 05:43:16,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 05:43:16,944 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 05:43:17,075 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:43:17,078 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 05:43:17,091 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:43:17,102 INFO L193 MainTranslator]: Completed translation [2018-10-27 05:43:17,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:17 WrapperNode [2018-10-27 05:43:17,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 05:43:17,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 05:43:17,104 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 05:43:17,104 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 05:43:17,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:17" (1/1) ... [2018-10-27 05:43:17,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:17" (1/1) ... [2018-10-27 05:43:17,121 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 05:43:17,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 05:43:17,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 05:43:17,122 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 05:43:17,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:17" (1/1) ... [2018-10-27 05:43:17,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:17" (1/1) ... [2018-10-27 05:43:17,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:17" (1/1) ... [2018-10-27 05:43:17,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:17" (1/1) ... [2018-10-27 05:43:17,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:17" (1/1) ... [2018-10-27 05:43:17,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:17" (1/1) ... [2018-10-27 05:43:17,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:17" (1/1) ... [2018-10-27 05:43:17,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 05:43:17,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 05:43:17,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 05:43:17,140 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 05:43:17,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9c0514ad-a875-45a0-ab0e-f413877ecd39/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 [2018-10-27 05:43:17,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 05:43:17,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 05:43:17,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 05:43:17,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 05:43:17,251 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 05:43:17,251 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 05:43:17,570 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 05:43:17,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:43:17 BoogieIcfgContainer [2018-10-27 05:43:17,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 05:43:17,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 05:43:17,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 05:43:17,574 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 05:43:17,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:43:16" (1/3) ... [2018-10-27 05:43:17,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3756c457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:43:17, skipping insertion in model container [2018-10-27 05:43:17,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:17" (2/3) ... [2018-10-27 05:43:17,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3756c457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:43:17, skipping insertion in model container [2018-10-27 05:43:17,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:43:17" (3/3) ... [2018-10-27 05:43:17,589 INFO L112 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi3_true-termination_true-no-overflow.c [2018-10-27 05:43:17,604 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 05:43:17,610 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-10-27 05:43:17,623 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-10-27 05:43:17,649 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 05:43:17,649 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 05:43:17,649 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 05:43:17,649 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 05:43:17,650 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 05:43:17,650 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 05:43:17,650 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 05:43:17,650 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 05:43:17,664 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-10-27 05:43:17,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-27 05:43:17,668 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:17,669 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:43:17,671 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:43:17,676 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:17,676 INFO L82 PathProgramCache]: Analyzing trace with hash 409964900, now seen corresponding path program 1 times [2018-10-27 05:43:17,678 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:43:17,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:17,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:17,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:17,717 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:43:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:43:17,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:43:17,799 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:43:17,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 05:43:17,799 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:43:17,802 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:43:17,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:43:17,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:43:17,812 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2018-10-27 05:43:17,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:43:17,895 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2018-10-27 05:43:17,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:43:17,896 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-10-27 05:43:17,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:43:17,903 INFO L225 Difference]: With dead ends: 36 [2018-10-27 05:43:17,904 INFO L226 Difference]: Without dead ends: 22 [2018-10-27 05:43:17,906 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:43:17,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-27 05:43:17,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2018-10-27 05:43:17,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-27 05:43:17,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-10-27 05:43:17,937 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 10 [2018-10-27 05:43:17,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:43:17,937 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-10-27 05:43:17,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:43:17,938 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-10-27 05:43:17,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-27 05:43:17,938 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:17,938 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:43:17,939 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:43:17,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:17,939 INFO L82 PathProgramCache]: Analyzing trace with hash 409965092, now seen corresponding path program 1 times [2018-10-27 05:43:17,939 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:43:17,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:17,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:17,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:17,941 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:43:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:43:18,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:43:18,003 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:43:18,003 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 05:43:18,004 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:43:18,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:43:18,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:43:18,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:43:18,005 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 3 states. [2018-10-27 05:43:18,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:43:18,073 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2018-10-27 05:43:18,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:43:18,073 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-10-27 05:43:18,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:43:18,074 INFO L225 Difference]: With dead ends: 39 [2018-10-27 05:43:18,074 INFO L226 Difference]: Without dead ends: 24 [2018-10-27 05:43:18,075 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:43:18,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-27 05:43:18,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-27 05:43:18,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-27 05:43:18,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2018-10-27 05:43:18,079 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 10 [2018-10-27 05:43:18,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:43:18,080 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2018-10-27 05:43:18,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:43:18,080 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2018-10-27 05:43:18,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-27 05:43:18,080 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:18,080 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:43:18,081 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:43:18,081 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:18,081 INFO L82 PathProgramCache]: Analyzing trace with hash -175989934, now seen corresponding path program 1 times [2018-10-27 05:43:18,081 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:43:18,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:18,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:18,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:18,083 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:43:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:43:18,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:43:18,124 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:43:18,124 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 05:43:18,124 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:43:18,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:43:18,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:43:18,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:43:18,125 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 3 states. [2018-10-27 05:43:18,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:43:18,154 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2018-10-27 05:43:18,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:43:18,155 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-10-27 05:43:18,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:43:18,160 INFO L225 Difference]: With dead ends: 24 [2018-10-27 05:43:18,160 INFO L226 Difference]: Without dead ends: 23 [2018-10-27 05:43:18,160 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:43:18,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-27 05:43:18,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-27 05:43:18,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-27 05:43:18,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-10-27 05:43:18,165 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 11 [2018-10-27 05:43:18,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:43:18,165 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-10-27 05:43:18,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:43:18,165 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-10-27 05:43:18,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-27 05:43:18,166 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:18,166 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:43:18,172 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:43:18,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:18,172 INFO L82 PathProgramCache]: Analyzing trace with hash -246154182, now seen corresponding path program 1 times [2018-10-27 05:43:18,172 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:43:18,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:18,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:18,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:18,178 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:43:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:43:18,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:43:18,243 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:43:18,243 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:43:18,244 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-10-27 05:43:18,245 INFO L202 CegarAbsIntRunner]: [0], [4], [7], [11], [17], [20], [21], [22], [24], [40], [41], [42] [2018-10-27 05:43:18,281 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 05:43:18,281 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:43:18,464 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:43:18,467 INFO L272 AbstractInterpreter]: Visited 12 different actions 54 times. Merged at 5 different actions 35 times. Widened at 1 different actions 3 times. Found 1 fixpoints after 1 different actions. Largest state had 6 variables. [2018-10-27 05:43:18,473 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:18,474 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:43:18,532 INFO L227 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 62.5% of their original sizes. [2018-10-27 05:43:18,532 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:43:18,795 INFO L415 sIntCurrentIteration]: We unified 14 AI predicates to 14 [2018-10-27 05:43:18,796 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:43:18,796 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:43:18,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [3] total 8 [2018-10-27 05:43:18,796 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:43:18,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 05:43:18,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 05:43:18,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 05:43:18,798 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 7 states. [2018-10-27 05:43:19,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:43:19,386 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2018-10-27 05:43:19,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 05:43:19,386 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2018-10-27 05:43:19,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:43:19,387 INFO L225 Difference]: With dead ends: 44 [2018-10-27 05:43:19,387 INFO L226 Difference]: Without dead ends: 41 [2018-10-27 05:43:19,388 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2018-10-27 05:43:19,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-27 05:43:19,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30. [2018-10-27 05:43:19,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-27 05:43:19,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2018-10-27 05:43:19,396 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 15 [2018-10-27 05:43:19,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:43:19,396 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2018-10-27 05:43:19,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 05:43:19,396 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2018-10-27 05:43:19,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-27 05:43:19,399 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:19,399 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:43:19,399 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:43:19,399 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:19,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1647973334, now seen corresponding path program 1 times [2018-10-27 05:43:19,400 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:43:19,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:19,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:19,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:19,402 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:43:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:43:19,472 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-10-27 05:43:19,472 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:43:19,472 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:43:19,472 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-10-27 05:43:19,473 INFO L202 CegarAbsIntRunner]: [0], [4], [7], [11], [17], [20], [22], [24], [26], [27], [28], [30], [40], [41], [42] [2018-10-27 05:43:19,474 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 05:43:19,474 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:43:19,680 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:43:19,681 INFO L272 AbstractInterpreter]: Visited 15 different actions 166 times. Merged at 8 different actions 118 times. Widened at 2 different actions 13 times. Found 19 fixpoints after 4 different actions. Largest state had 6 variables. [2018-10-27 05:43:19,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:19,696 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:43:19,738 INFO L227 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 50% of their original sizes. [2018-10-27 05:43:19,739 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:43:19,959 INFO L415 sIntCurrentIteration]: We unified 19 AI predicates to 19 [2018-10-27 05:43:19,959 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:43:19,959 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:43:19,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 11 [2018-10-27 05:43:19,960 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:43:19,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 05:43:19,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 05:43:19,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2018-10-27 05:43:19,960 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 9 states. [2018-10-27 05:43:20,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:43:20,259 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2018-10-27 05:43:20,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 05:43:20,259 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2018-10-27 05:43:20,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:43:20,260 INFO L225 Difference]: With dead ends: 32 [2018-10-27 05:43:20,260 INFO L226 Difference]: Without dead ends: 0 [2018-10-27 05:43:20,260 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2018-10-27 05:43:20,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-27 05:43:20,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-27 05:43:20,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-27 05:43:20,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-27 05:43:20,261 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2018-10-27 05:43:20,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:43:20,262 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 05:43:20,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 05:43:20,262 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-27 05:43:20,262 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-27 05:43:20,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-27 05:43:20,387 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 122 [2018-10-27 05:43:21,153 WARN L179 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 29 [2018-10-27 05:43:21,155 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-27 05:43:21,155 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-27 05:43:21,155 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-27 05:43:21,155 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-27 05:43:21,155 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-27 05:43:21,155 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-27 05:43:21,156 INFO L425 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-10-27 05:43:21,156 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 13 30) no Hoare annotation was computed. [2018-10-27 05:43:21,156 INFO L425 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2018-10-27 05:43:21,156 INFO L425 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2018-10-27 05:43:21,156 INFO L425 ceAbstractionStarter]: For program point L21(lines 21 26) no Hoare annotation was computed. [2018-10-27 05:43:21,156 INFO L421 ceAbstractionStarter]: At program point L21-2(lines 20 27) the Hoare annotation is: (let ((.cse0 (<= (+ main_~m~0 1) main_~n~0)) (.cse1 (<= 0 (* 2 main_~j~0))) (.cse2 (<= 0 (* 2 main_~i~0))) (.cse3 (<= 2 (* 2 main_~m~0)))) (or (and (<= (+ main_~i~0 1) main_~n~0) (<= (* 2 main_~n~0) 4294967294) .cse0 .cse1 .cse2 .cse3 (<= main_~j~0 main_~m~0)) (and .cse0 (<= main_~n~0 (+ main_~j~0 2147483647)) .cse1 (<= main_~j~0 0) (<= main_~i~0 main_~n~0) .cse2 .cse3))) [2018-10-27 05:43:21,156 INFO L425 ceAbstractionStarter]: For program point L17(lines 17 28) no Hoare annotation was computed. [2018-10-27 05:43:21,156 INFO L425 ceAbstractionStarter]: For program point L17-1(lines 17 28) no Hoare annotation was computed. [2018-10-27 05:43:21,156 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 13 30) no Hoare annotation was computed. [2018-10-27 05:43:21,157 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-10-27 05:43:21,157 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 13 30) the Hoare annotation is: true [2018-10-27 05:43:21,157 INFO L425 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2018-10-27 05:43:21,157 INFO L425 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-10-27 05:43:21,157 INFO L425 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2018-10-27 05:43:21,157 INFO L425 ceAbstractionStarter]: For program point L20-1(lines 20 27) no Hoare annotation was computed. [2018-10-27 05:43:21,157 INFO L425 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-10-27 05:43:21,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 05:43:21 BoogieIcfgContainer [2018-10-27 05:43:21,169 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 05:43:21,170 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 05:43:21,170 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 05:43:21,170 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 05:43:21,175 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:43:17" (3/4) ... [2018-10-27 05:43:21,178 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-27 05:43:21,182 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-27 05:43:21,182 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-27 05:43:21,186 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-10-27 05:43:21,186 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-10-27 05:43:21,186 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-27 05:43:21,186 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-27 05:43:21,231 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_9c0514ad-a875-45a0-ab0e-f413877ecd39/bin-2019/utaipan/witness.graphml [2018-10-27 05:43:21,232 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 05:43:21,233 INFO L168 Benchmark]: Toolchain (without parser) took 4326.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.5 MB). Free memory was 963.4 MB in the beginning and 900.5 MB in the end (delta: 62.9 MB). Peak memory consumption was 236.5 MB. Max. memory is 11.5 GB. [2018-10-27 05:43:21,234 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 05:43:21,236 INFO L168 Benchmark]: CACSL2BoogieTranslator took 195.10 ms. Allocated memory is still 1.0 GB. Free memory was 963.4 MB in the beginning and 952.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 05:43:21,237 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.15 ms. Allocated memory is still 1.0 GB. Free memory is still 952.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 05:43:21,237 INFO L168 Benchmark]: Boogie Preprocessor took 17.65 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 947.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-27 05:43:21,238 INFO L168 Benchmark]: RCFGBuilder took 431.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.5 MB). Free memory was 947.3 MB in the beginning and 1.2 GB in the end (delta: -207.3 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2018-10-27 05:43:21,238 INFO L168 Benchmark]: TraceAbstraction took 3597.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 900.5 MB in the end (delta: 254.2 MB). Peak memory consumption was 254.2 MB. Max. memory is 11.5 GB. [2018-10-27 05:43:21,239 INFO L168 Benchmark]: Witness Printer took 62.43 ms. Allocated memory is still 1.2 GB. Free memory is still 900.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 05:43:21,241 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 195.10 ms. Allocated memory is still 1.0 GB. Free memory was 963.4 MB in the beginning and 952.7 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 18.15 ms. Allocated memory is still 1.0 GB. Free memory is still 952.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.65 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 947.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 431.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.5 MB). Free memory was 947.3 MB in the beginning and 1.2 GB in the end (delta: -207.3 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3597.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 900.5 MB in the end (delta: 254.2 MB). Peak memory consumption was 254.2 MB. Max. memory is 11.5 GB. * Witness Printer took 62.43 ms. Allocated memory is still 1.2 GB. Free memory is still 900.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((((((i + 1 <= n && 2 * n <= 4294967294) && m + 1 <= n) && 0 <= 2 * j) && 0 <= 2 * i) && 2 <= 2 * m) && j <= m) || ((((((m + 1 <= n && n <= j + 2147483647) && 0 <= 2 * j) && j <= 0) && i <= n) && 0 <= 2 * i) && 2 <= 2 * m) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 22 locations, 4 error locations. SAFE Result, 3.5s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.8s HoareAnnotationTime, HoareTripleCheckerStatistics: 62 SDtfs, 112 SDslu, 67 SDs, 0 SdLazy, 49 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.4s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9797979797979797 AbsIntWeakeningRatio, 0.36363636363636365 AbsIntAvgWeakeningVarsNumRemoved, 3.121212121212121 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 9 NumberOfFragments, 71 HoareAnnotationTreeSize, 5 FomulaSimplifications, 106 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 770 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 2035 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 4/14 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...