./Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/loop-invgen/id_build_true-unreach-call_true-termination.i --full-output --rcfgbuilder.size.of.a.code.block SingleStatement --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0210da8c Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/TaipanReach.xml -i ../../../trunk/examples/svcomp/loop-invgen/id_build_true-unreach-call_true-termination.i -s /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UTaipan-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 595e0ffd0ff086ae45c2b9536863374b9b9c0fb6 --rcfgbuilder.size.of.a.code.block SingleStatement ........................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0210da8 [2018-10-22 09:52:50,434 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 09:52:50,437 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 09:52:50,448 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 09:52:50,449 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 09:52:50,450 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 09:52:50,451 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 09:52:50,453 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 09:52:50,455 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 09:52:50,455 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 09:52:50,457 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 09:52:50,457 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 09:52:50,458 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 09:52:50,459 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 09:52:50,462 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 09:52:50,464 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 09:52:50,465 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 09:52:50,472 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 09:52:50,476 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 09:52:50,479 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 09:52:50,481 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 09:52:50,485 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 09:52:50,488 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-22 09:52:50,490 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-22 09:52:50,490 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-22 09:52:50,491 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-22 09:52:50,492 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-22 09:52:50,493 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-22 09:52:50,496 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-22 09:52:50,497 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-22 09:52:50,497 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-22 09:52:50,498 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-22 09:52:50,500 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-22 09:52:50,500 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-22 09:52:50,501 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-22 09:52:50,502 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-22 09:52:50,504 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-22 09:52:50,534 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 09:52:50,535 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 09:52:50,536 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 09:52:50,536 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-22 09:52:50,537 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-22 09:52:50,537 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-22 09:52:50,537 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-22 09:52:50,537 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-22 09:52:50,537 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-22 09:52:50,537 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-22 09:52:50,538 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-22 09:52:50,540 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 09:52:50,540 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-22 09:52:50,540 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 09:52:50,540 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-22 09:52:50,540 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 09:52:50,541 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 09:52:50,543 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 09:52:50,543 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 09:52:50,543 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-22 09:52:50,544 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 09:52:50,544 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 09:52:50,544 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 09:52:50,544 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 09:52:50,544 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 09:52:50,545 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 09:52:50,545 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 09:52:50,545 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 09:52:50,545 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 09:52:50,545 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 09:52:50,545 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-22 09:52:50,546 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 09:52:50,548 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 09:52:50,549 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 09:52:50,549 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 -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux 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 ! call(__VERIFIER_error())) ) 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 595e0ffd0ff086ae45c2b9536863374b9b9c0fb6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2018-10-22 09:52:50,620 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 09:52:50,631 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 09:52:50,635 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 09:52:50,636 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 09:52:50,637 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 09:52:50,637 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-invgen/id_build_true-unreach-call_true-termination.i [2018-10-22 09:52:50,693 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e46c24961/0720bac2eb4c4a2c89b3e3806ac1af40/FLAGbee4cd4b1 [2018-10-22 09:52:51,111 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 09:52:51,112 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build_true-unreach-call_true-termination.i [2018-10-22 09:52:51,118 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e46c24961/0720bac2eb4c4a2c89b3e3806ac1af40/FLAGbee4cd4b1 [2018-10-22 09:52:51,134 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e46c24961/0720bac2eb4c4a2c89b3e3806ac1af40 [2018-10-22 09:52:51,138 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 09:52:51,140 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-22 09:52:51,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 09:52:51,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 09:52:51,145 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 09:52:51,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:52:51" (1/1) ... [2018-10-22 09:52:51,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29c9130b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:52:51, skipping insertion in model container [2018-10-22 09:52:51,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:52:51" (1/1) ... [2018-10-22 09:52:51,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 09:52:51,183 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 09:52:51,390 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 09:52:51,394 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 09:52:51,416 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 09:52:51,433 INFO L193 MainTranslator]: Completed translation [2018-10-22 09:52:51,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:52:51 WrapperNode [2018-10-22 09:52:51,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 09:52:51,436 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 09:52:51,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 09:52:51,437 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 09:52:51,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:52:51" (1/1) ... [2018-10-22 09:52:51,452 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:52:51" (1/1) ... [2018-10-22 09:52:51,458 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 09:52:51,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 09:52:51,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 09:52:51,459 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 09:52:51,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:52:51" (1/1) ... [2018-10-22 09:52:51,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:52:51" (1/1) ... [2018-10-22 09:52:51,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:52:51" (1/1) ... [2018-10-22 09:52:51,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:52:51" (1/1) ... [2018-10-22 09:52:51,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:52:51" (1/1) ... [2018-10-22 09:52:51,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:52:51" (1/1) ... [2018-10-22 09:52:51,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:52:51" (1/1) ... [2018-10-22 09:52:51,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 09:52:51,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 09:52:51,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 09:52:51,488 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 09:52:51,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:52:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/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 [2018-10-22 09:52:51,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-22 09:52:51,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-22 09:52:51,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 09:52:51,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 09:52:51,621 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-22 09:52:51,621 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-22 09:52:51,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-22 09:52:51,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-22 09:52:51,956 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 09:52:51,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:52:51 BoogieIcfgContainer [2018-10-22 09:52:51,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 09:52:51,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 09:52:51,958 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 09:52:51,961 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 09:52:51,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:52:51" (1/3) ... [2018-10-22 09:52:51,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@718d5abf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:52:51, skipping insertion in model container [2018-10-22 09:52:51,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:52:51" (2/3) ... [2018-10-22 09:52:51,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@718d5abf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:52:51, skipping insertion in model container [2018-10-22 09:52:51,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:52:51" (3/3) ... [2018-10-22 09:52:51,971 INFO L112 eAbstractionObserver]: Analyzing ICFG id_build_true-unreach-call_true-termination.i [2018-10-22 09:52:51,990 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 09:52:52,005 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 09:52:52,022 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 09:52:52,055 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 09:52:52,056 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 09:52:52,056 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 09:52:52,056 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 09:52:52,057 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 09:52:52,057 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 09:52:52,057 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 09:52:52,057 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 09:52:52,057 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 09:52:52,076 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2018-10-22 09:52:52,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-22 09:52:52,082 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 09:52:52,083 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 09:52:52,085 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 09:52:52,090 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:52:52,091 INFO L82 PathProgramCache]: Analyzing trace with hash -981079587, now seen corresponding path program 1 times [2018-10-22 09:52:52,093 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 09:52:52,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:52:52,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 09:52:52,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:52:52,137 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 09:52:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 09:52:52,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 09:52:52,287 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 09:52:52,287 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-22 09:52:52,287 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 09:52:52,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-22 09:52:52,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-22 09:52:52,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-22 09:52:52,308 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 5 states. [2018-10-22 09:52:52,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 09:52:52,467 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2018-10-22 09:52:52,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-22 09:52:52,469 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-10-22 09:52:52,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 09:52:52,478 INFO L225 Difference]: With dead ends: 64 [2018-10-22 09:52:52,479 INFO L226 Difference]: Without dead ends: 35 [2018-10-22 09:52:52,482 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-22 09:52:52,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-22 09:52:52,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-22 09:52:52,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-22 09:52:52,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-10-22 09:52:52,524 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 21 [2018-10-22 09:52:52,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 09:52:52,525 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-10-22 09:52:52,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-22 09:52:52,525 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-10-22 09:52:52,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-22 09:52:52,526 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 09:52:52,526 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 09:52:52,527 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 09:52:52,527 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:52:52,527 INFO L82 PathProgramCache]: Analyzing trace with hash 210649748, now seen corresponding path program 1 times [2018-10-22 09:52:52,527 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 09:52:52,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:52:52,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 09:52:52,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:52:52,529 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 09:52:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 09:52:52,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 09:52:52,740 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 09:52:52,740 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-22 09:52:52,741 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 27 with the following transitions: [2018-10-22 09:52:52,743 INFO L202 CegarAbsIntRunner]: [0], [4], [5], [6], [7], [8], [9], [10], [11], [15], [20], [21], [25], [30], [48], [51], [53], [56], [58], [59], [60], [61], [63], [64], [65] [2018-10-22 09:52:52,807 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-22 09:52:52,808 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-22 09:52:52,958 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-22 09:52:52,959 INFO L272 AbstractInterpreter]: Visited 24 different actions 28 times. Never merged. Never widened. Never found a fixpoint. Largest state had 6 variables. [2018-10-22 09:52:52,970 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:52:52,971 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-22 09:52:53,086 INFO L232 lantSequenceWeakener]: Weakened 7 states. On average, predicates are now at 64.29% of their original sizes. [2018-10-22 09:52:53,086 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-22 09:52:53,513 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-22 09:52:53,514 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-22 09:52:53,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2018-10-22 09:52:53,514 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 09:52:53,517 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-22 09:52:53,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-22 09:52:53,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-22 09:52:53,518 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 10 states. [2018-10-22 09:52:54,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 09:52:54,214 INFO L93 Difference]: Finished difference Result 84 states and 91 transitions. [2018-10-22 09:52:54,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-22 09:52:54,214 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2018-10-22 09:52:54,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 09:52:54,217 INFO L225 Difference]: With dead ends: 84 [2018-10-22 09:52:54,217 INFO L226 Difference]: Without dead ends: 61 [2018-10-22 09:52:54,219 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-10-22 09:52:54,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-22 09:52:54,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2018-10-22 09:52:54,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-22 09:52:54,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2018-10-22 09:52:54,236 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 26 [2018-10-22 09:52:54,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 09:52:54,237 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2018-10-22 09:52:54,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-22 09:52:54,237 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2018-10-22 09:52:54,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-22 09:52:54,240 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 09:52:54,240 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 09:52:54,241 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 09:52:54,241 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:52:54,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1072093402, now seen corresponding path program 1 times [2018-10-22 09:52:54,242 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 09:52:54,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:52:54,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 09:52:54,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:52:54,244 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 09:52:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 09:52:54,310 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-22 09:52:54,311 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 09:52:54,311 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-22 09:52:54,311 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 50 with the following transitions: [2018-10-22 09:52:54,311 INFO L202 CegarAbsIntRunner]: [0], [4], [5], [6], [7], [8], [9], [10], [11], [15], [20], [21], [25], [28], [30], [34], [35], [36], [40], [41], [42], [48], [51], [53], [56], [58], [59], [60], [61], [63], [64], [65], [66] [2018-10-22 09:52:54,314 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-22 09:52:54,314 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-22 09:52:54,630 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-22 09:52:54,631 INFO L272 AbstractInterpreter]: Visited 32 different actions 321 times. Merged at 14 different actions 141 times. Widened at 3 different actions 13 times. Found 11 fixpoints after 4 different actions. Largest state had 8 variables. [2018-10-22 09:52:54,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:52:54,646 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-22 09:52:54,725 INFO L232 lantSequenceWeakener]: Weakened 18 states. On average, predicates are now at 62.96% of their original sizes. [2018-10-22 09:52:54,725 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-22 09:52:55,610 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-22 09:52:55,611 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-22 09:52:55,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [5] total 18 [2018-10-22 09:52:55,611 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 09:52:55,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-22 09:52:55,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-22 09:52:55,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2018-10-22 09:52:55,613 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 15 states. [2018-10-22 09:52:58,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 09:52:58,105 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2018-10-22 09:52:58,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-22 09:52:58,106 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 49 [2018-10-22 09:52:58,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 09:52:58,106 INFO L225 Difference]: With dead ends: 88 [2018-10-22 09:52:58,107 INFO L226 Difference]: Without dead ends: 0 [2018-10-22 09:52:58,109 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=240, Invalid=752, Unknown=0, NotChecked=0, Total=992 [2018-10-22 09:52:58,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-22 09:52:58,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-22 09:52:58,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-22 09:52:58,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-22 09:52:58,111 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2018-10-22 09:52:58,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 09:52:58,111 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-22 09:52:58,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-22 09:52:58,111 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-22 09:52:58,111 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-22 09:52:58,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-22 09:52:58,293 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-22 09:52:58,326 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-22 09:52:59,003 WARN L179 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 21 [2018-10-22 09:52:59,131 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 16 [2018-10-22 09:52:59,228 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-22 09:52:59,228 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-22 09:52:59,228 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-22 09:52:59,229 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-22 09:52:59,229 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-22 09:52:59,229 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-22 09:52:59,229 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 20) no Hoare annotation was computed. [2018-10-22 09:52:59,229 INFO L421 ceAbstractionStarter]: At program point L15(line 15) the Hoare annotation is: (let ((.cse0 (* 2 main_~j~0))) (and (<= 0 .cse0) (< main_~i~0 main_~nlen~0) (<= .cse0 14) (<= (* 2 main_~nlen~0) 4294967294) (<= 0 (* 2 main_~i~0)))) [2018-10-22 09:52:59,229 INFO L421 ceAbstractionStarter]: At program point L15-1(line 15) the Hoare annotation is: (let ((.cse0 (* 2 main_~j~0))) (and (<= 0 .cse0) (< main_~i~0 main_~nlen~0) (<= .cse0 14) (<= (* 2 main_~nlen~0) 4294967294) (<= 0 (* 2 main_~i~0)))) [2018-10-22 09:52:59,230 INFO L425 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-10-22 09:52:59,230 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 20) no Hoare annotation was computed. [2018-10-22 09:52:59,230 INFO L425 ceAbstractionStarter]: For program point L11(line 11) no Hoare annotation was computed. [2018-10-22 09:52:59,230 INFO L425 ceAbstractionStarter]: For program point L13-2(lines 13 18) no Hoare annotation was computed. [2018-10-22 09:52:59,230 INFO L425 ceAbstractionStarter]: For program point L11-1(line 11) no Hoare annotation was computed. [2018-10-22 09:52:59,230 INFO L425 ceAbstractionStarter]: For program point L11-2(line 11) no Hoare annotation was computed. [2018-10-22 09:52:59,230 INFO L425 ceAbstractionStarter]: For program point L13-4(lines 13 18) no Hoare annotation was computed. [2018-10-22 09:52:59,230 INFO L425 ceAbstractionStarter]: For program point L11-3(line 11) no Hoare annotation was computed. [2018-10-22 09:52:59,230 INFO L425 ceAbstractionStarter]: For program point L13-5(line 13) no Hoare annotation was computed. [2018-10-22 09:52:59,231 INFO L425 ceAbstractionStarter]: For program point L13-6(line 13) no Hoare annotation was computed. [2018-10-22 09:52:59,231 INFO L421 ceAbstractionStarter]: At program point L13-7(lines 13 18) the Hoare annotation is: (or (and (<= main_~i~0 main_~nlen~0) (<= 2 (* 2 main_~i~0)) (<= (* 2 main_~nlen~0) 4294967294)) (and (<= main_~nlen~0 (+ main_~i~0 2147483647)) (<= main_~i~0 (+ main_~nlen~0 2147483648)) (= main_~i~0 0))) [2018-10-22 09:52:59,231 INFO L425 ceAbstractionStarter]: For program point L13-8(lines 13 18) no Hoare annotation was computed. [2018-10-22 09:52:59,231 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 20) the Hoare annotation is: true [2018-10-22 09:52:59,231 INFO L425 ceAbstractionStarter]: For program point L16(lines 14 17) no Hoare annotation was computed. [2018-10-22 09:52:59,231 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-10-22 09:52:59,231 INFO L425 ceAbstractionStarter]: For program point L12(line 12) no Hoare annotation was computed. [2018-10-22 09:52:59,232 INFO L425 ceAbstractionStarter]: For program point L14-2(lines 14 17) no Hoare annotation was computed. [2018-10-22 09:52:59,232 INFO L425 ceAbstractionStarter]: For program point L12-1(line 12) no Hoare annotation was computed. [2018-10-22 09:52:59,232 INFO L425 ceAbstractionStarter]: For program point L14-4(line 14) no Hoare annotation was computed. [2018-10-22 09:52:59,232 INFO L425 ceAbstractionStarter]: For program point L14-5(line 14) no Hoare annotation was computed. [2018-10-22 09:52:59,233 INFO L421 ceAbstractionStarter]: At program point L14-6(lines 14 17) the Hoare annotation is: (let ((.cse1 (<= (* 2 main_~nlen~0) 4294967294)) (.cse0 (* 2 main_~j~0)) (.cse2 (< main_~i~0 main_~nlen~0)) (.cse3 (<= 0 (* 2 main_~i~0)))) (or (and (<= 0 .cse0) .cse1 .cse2 .cse3 (<= .cse0 14)) (and (<= .cse0 16) .cse1 (<= 2 .cse0) .cse2 .cse3))) [2018-10-22 09:52:59,233 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-22 09:52:59,233 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-22 09:52:59,233 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-22 09:52:59,233 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-22 09:52:59,233 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-22 09:52:59,234 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-22 09:52:59,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:52:59 BoogieIcfgContainer [2018-10-22 09:52:59,246 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 09:52:59,246 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-22 09:52:59,246 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-22 09:52:59,246 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-22 09:52:59,247 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:52:51" (3/4) ... [2018-10-22 09:52:59,250 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-22 09:52:59,256 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-22 09:52:59,257 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-22 09:52:59,257 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-10-22 09:52:59,261 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2018-10-22 09:52:59,261 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-10-22 09:52:59,261 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-22 09:52:59,310 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/witness.graphml [2018-10-22 09:52:59,310 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-22 09:52:59,311 INFO L168 Benchmark]: Toolchain (without parser) took 8172.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 210.2 MB). Free memory was 951.8 MB in the beginning and 1.1 GB in the end (delta: -124.0 MB). Peak memory consumption was 86.2 MB. Max. memory is 11.5 GB. [2018-10-22 09:52:59,312 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 09:52:59,313 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.69 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-22 09:52:59,313 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.03 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 09:52:59,314 INFO L168 Benchmark]: Boogie Preprocessor took 29.07 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 09:52:59,314 INFO L168 Benchmark]: RCFGBuilder took 468.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -182.2 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. [2018-10-22 09:52:59,315 INFO L168 Benchmark]: TraceAbstraction took 7288.23 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 64.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 47.4 MB). Peak memory consumption was 111.9 MB. Max. memory is 11.5 GB. [2018-10-22 09:52:59,316 INFO L168 Benchmark]: Witness Printer took 64.20 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 09:52:59,320 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 293.69 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.03 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.07 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 468.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -182.2 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7288.23 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 64.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 47.4 MB). Peak memory consumption was 111.9 MB. Max. memory is 11.5 GB. * Witness Printer took 64.20 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: ((i <= nlen && 2 <= 2 * i) && 2 * nlen <= 4294967294) || ((nlen <= i + 2147483647 && i <= nlen + 2147483648) && i == 0) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((0 <= 2 * j && 2 * nlen <= 4294967294) && i < nlen) && 0 <= 2 * i) && 2 * j <= 14) || ((((2 * j <= 16 && 2 * nlen <= 4294967294) && 2 <= 2 * j) && i < nlen) && 0 <= 2 * i) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 36 locations, 1 error locations. SAFE Result, 7.1s OverallTime, 3 OverallIterations, 4 TraceHistogramMax, 3.3s AutomataDifference, 0.0s DeadEndRemovalTime, 1.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 91 SDtfs, 106 SDslu, 419 SDs, 0 SdLazy, 92 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 100 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9075342465753424 AbsIntWeakeningRatio, 0.4794520547945205 AbsIntAvgWeakeningVarsNumRemoved, 3.506849315068493 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 22 PreInvPairs, 36 NumberOfFragments, 131 HoareAnnotationTreeSize, 22 FomulaSimplifications, 1206 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 9 FomulaSimplificationsInter, 975 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 5533 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 28/31 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...