./Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/loops/veris.c_NetBSD-libc__loop_true-unreach-call_true-termination.i --full-output --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/loops/veris.c_NetBSD-libc__loop_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 0322173b3e50156a3157d6284ff4dd2480f2ac8d ..................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0210da8 [2018-10-21 12:29:21,694 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-21 12:29:21,700 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-21 12:29:21,715 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-21 12:29:21,716 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-21 12:29:21,718 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-21 12:29:21,719 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-21 12:29:21,722 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-21 12:29:21,724 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-21 12:29:21,727 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-21 12:29:21,728 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-21 12:29:21,728 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-21 12:29:21,729 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-21 12:29:21,730 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-21 12:29:21,731 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-21 12:29:21,732 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-21 12:29:21,733 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-21 12:29:21,735 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-21 12:29:21,737 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-21 12:29:21,739 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-21 12:29:21,740 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-21 12:29:21,742 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-21 12:29:21,745 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-21 12:29:21,745 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-21 12:29:21,745 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-21 12:29:21,746 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-21 12:29:21,748 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-21 12:29:21,748 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-21 12:29:21,749 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-21 12:29:21,751 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-21 12:29:21,751 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-21 12:29:21,752 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-21 12:29:21,752 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-21 12:29:21,752 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-21 12:29:21,754 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-21 12:29:21,755 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-21 12:29:21,755 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-21 12:29:21,771 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-21 12:29:21,771 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-21 12:29:21,772 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-21 12:29:21,772 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-21 12:29:21,772 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-21 12:29:21,773 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-21 12:29:21,773 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-21 12:29:21,774 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-21 12:29:21,774 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-21 12:29:21,774 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-21 12:29:21,774 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-21 12:29:21,776 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-21 12:29:21,776 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-21 12:29:21,776 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-21 12:29:21,776 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-21 12:29:21,776 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-21 12:29:21,776 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-21 12:29:21,777 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-21 12:29:21,777 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-21 12:29:21,777 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-21 12:29:21,777 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-21 12:29:21,777 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-21 12:29:21,777 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-21 12:29:21,778 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-21 12:29:21,779 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-21 12:29:21,779 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-21 12:29:21,779 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-21 12:29:21,780 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-21 12:29:21,780 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-21 12:29:21,780 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-21 12:29:21,781 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-21 12:29:21,781 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-21 12:29:21,781 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-21 12:29:21,781 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-21 12:29:21,781 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 -> 0322173b3e50156a3157d6284ff4dd2480f2ac8d [2018-10-21 12:29:21,831 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-21 12:29:21,843 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-21 12:29:21,847 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-21 12:29:21,849 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-21 12:29:21,849 INFO L276 PluginConnector]: CDTParser initialized [2018-10-21 12:29:21,850 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/veris.c_NetBSD-libc__loop_true-unreach-call_true-termination.i [2018-10-21 12:29:21,905 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7b1ec86f2/25c08f0148124e62b4d84b9d6e67f240/FLAG34b0c2cec [2018-10-21 12:29:22,349 INFO L298 CDTParser]: Found 1 translation units. [2018-10-21 12:29:22,350 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_NetBSD-libc__loop_true-unreach-call_true-termination.i [2018-10-21 12:29:22,358 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7b1ec86f2/25c08f0148124e62b4d84b9d6e67f240/FLAG34b0c2cec [2018-10-21 12:29:22,383 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7b1ec86f2/25c08f0148124e62b4d84b9d6e67f240 [2018-10-21 12:29:22,387 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-21 12:29:22,389 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-21 12:29:22,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-21 12:29:22,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-21 12:29:22,400 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-21 12:29:22,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 12:29:22" (1/1) ... [2018-10-21 12:29:22,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46148485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:29:22, skipping insertion in model container [2018-10-21 12:29:22,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 12:29:22" (1/1) ... [2018-10-21 12:29:22,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-21 12:29:22,445 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-21 12:29:22,636 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-21 12:29:22,646 INFO L189 MainTranslator]: Completed pre-run [2018-10-21 12:29:22,666 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-21 12:29:22,683 INFO L193 MainTranslator]: Completed translation [2018-10-21 12:29:22,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:29:22 WrapperNode [2018-10-21 12:29:22,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-21 12:29:22,685 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-21 12:29:22,685 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-21 12:29:22,685 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-21 12:29:22,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:29:22" (1/1) ... [2018-10-21 12:29:22,705 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:29:22" (1/1) ... [2018-10-21 12:29:22,727 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-21 12:29:22,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-21 12:29:22,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-21 12:29:22,728 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-21 12:29:22,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:29:22" (1/1) ... [2018-10-21 12:29:22,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:29:22" (1/1) ... [2018-10-21 12:29:22,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:29:22" (1/1) ... [2018-10-21 12:29:22,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:29:22" (1/1) ... [2018-10-21 12:29:22,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:29:22" (1/1) ... [2018-10-21 12:29:22,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:29:22" (1/1) ... [2018-10-21 12:29:22,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:29:22" (1/1) ... [2018-10-21 12:29:22,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-21 12:29:22,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-21 12:29:22,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-21 12:29:22,755 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-21 12:29:22,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:29:22" (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 [2018-10-21 12:29:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-21 12:29:22,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-21 12:29:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure glob2 [2018-10-21 12:29:22,902 INFO L138 BoogieDeclarations]: Found implementation of procedure glob2 [2018-10-21 12:29:22,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-21 12:29:22,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-21 12:29:22,902 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-21 12:29:22,902 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-21 12:29:22,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-21 12:29:22,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-21 12:29:23,404 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-21 12:29:23,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 12:29:23 BoogieIcfgContainer [2018-10-21 12:29:23,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-21 12:29:23,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-21 12:29:23,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-21 12:29:23,410 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-21 12:29:23,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 12:29:22" (1/3) ... [2018-10-21 12:29:23,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98c608e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 12:29:23, skipping insertion in model container [2018-10-21 12:29:23,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:29:22" (2/3) ... [2018-10-21 12:29:23,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98c608e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 12:29:23, skipping insertion in model container [2018-10-21 12:29:23,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 12:29:23" (3/3) ... [2018-10-21 12:29:23,414 INFO L112 eAbstractionObserver]: Analyzing ICFG veris.c_NetBSD-libc__loop_true-unreach-call_true-termination.i [2018-10-21 12:29:23,425 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-21 12:29:23,434 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-21 12:29:23,453 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-21 12:29:23,512 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-21 12:29:23,513 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-21 12:29:23,513 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-21 12:29:23,514 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-21 12:29:23,514 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-21 12:29:23,514 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-21 12:29:23,514 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-21 12:29:23,514 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-21 12:29:23,514 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-21 12:29:23,544 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-10-21 12:29:23,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-21 12:29:23,551 INFO L367 BasicCegarLoop]: Found error trace [2018-10-21 12:29:23,552 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-21 12:29:23,555 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-21 12:29:23,561 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:29:23,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1583108737, now seen corresponding path program 1 times [2018-10-21 12:29:23,564 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-21 12:29:23,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:29:23,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-21 12:29:23,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:29:23,615 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-21 12:29:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-21 12:29:24,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-21 12:29:24,010 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-21 12:29:24,011 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-21 12:29:24,011 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-21 12:29:24,016 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-21 12:29:24,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-21 12:29:24,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-21 12:29:24,032 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 7 states. [2018-10-21 12:29:24,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-21 12:29:24,536 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2018-10-21 12:29:24,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-21 12:29:24,539 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-10-21 12:29:24,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-21 12:29:24,547 INFO L225 Difference]: With dead ends: 58 [2018-10-21 12:29:24,548 INFO L226 Difference]: Without dead ends: 28 [2018-10-21 12:29:24,551 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-10-21 12:29:24,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-21 12:29:24,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2018-10-21 12:29:24,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-21 12:29:24,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-10-21 12:29:24,593 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 14 [2018-10-21 12:29:24,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-21 12:29:24,594 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-10-21 12:29:24,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-21 12:29:24,594 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-10-21 12:29:24,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-21 12:29:24,595 INFO L367 BasicCegarLoop]: Found error trace [2018-10-21 12:29:24,595 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-21 12:29:24,596 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-21 12:29:24,596 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:29:24,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1693639993, now seen corresponding path program 1 times [2018-10-21 12:29:24,596 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-21 12:29:24,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:29:24,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-21 12:29:24,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:29:24,598 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-21 12:29:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-21 12:29:24,989 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-21 12:29:24,989 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-21 12:29:24,990 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-21 12:29:24,992 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2018-10-21 12:29:24,993 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [11], [13], [15], [24], [28], [31], [33], [36], [38], [39], [40], [41], [42], [43], [45] [2018-10-21 12:29:25,062 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-21 12:29:25,063 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-21 12:29:25,562 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-21 12:29:25,563 INFO L272 AbstractInterpreter]: Visited 19 different actions 42 times. Merged at 5 different actions 12 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 31 variables. [2018-10-21 12:29:25,574 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:29:25,576 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-21 12:29:25,576 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-21 12:29:25,576 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-21 12:29:25,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-21 12:29:25,590 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-21 12:29:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-21 12:29:25,654 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-21 12:29:26,357 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-21 12:29:26,357 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-21 12:29:26,690 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-21 12:29:26,715 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-21 12:29:26,715 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-10-21 12:29:26,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-21 12:29:26,733 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-21 12:29:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-21 12:29:26,790 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-21 12:29:26,920 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-21 12:29:26,920 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-21 12:29:27,020 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-21 12:29:27,022 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-10-21 12:29:27,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10, 9, 8] total 20 [2018-10-21 12:29:27,023 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-21 12:29:27,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-21 12:29:27,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-21 12:29:27,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2018-10-21 12:29:27,026 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 14 states. [2018-10-21 12:29:27,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-21 12:29:27,403 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-21 12:29:27,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-21 12:29:27,404 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 23 [2018-10-21 12:29:27,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-21 12:29:27,408 INFO L225 Difference]: With dead ends: 37 [2018-10-21 12:29:27,408 INFO L226 Difference]: Without dead ends: 35 [2018-10-21 12:29:27,409 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 71 SyntacticMatches, 12 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2018-10-21 12:29:27,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-21 12:29:27,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-21 12:29:27,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-21 12:29:27,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-21 12:29:27,417 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 23 [2018-10-21 12:29:27,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-21 12:29:27,417 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-21 12:29:27,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-21 12:29:27,418 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-21 12:29:27,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-21 12:29:27,419 INFO L367 BasicCegarLoop]: Found error trace [2018-10-21 12:29:27,419 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-21 12:29:27,419 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-21 12:29:27,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:29:27,420 INFO L82 PathProgramCache]: Analyzing trace with hash 563486335, now seen corresponding path program 2 times [2018-10-21 12:29:27,420 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-21 12:29:27,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:29:27,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-21 12:29:27,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:29:27,421 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-21 12:29:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-21 12:29:27,619 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-21 12:29:27,620 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-21 12:29:27,620 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-21 12:29:27,620 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-21 12:29:27,620 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-21 12:29:27,620 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-21 12:29:27,620 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-21 12:29:27,629 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-21 12:29:27,629 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-10-21 12:29:27,653 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-10-21 12:29:27,653 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-21 12:29:27,657 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-21 12:29:27,768 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-10-21 12:29:27,768 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-21 12:29:27,858 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-10-21 12:29:27,890 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-21 12:29:27,890 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-10-21 12:29:27,906 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-21 12:29:27,907 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-10-21 12:29:27,947 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-10-21 12:29:27,947 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-21 12:29:27,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-21 12:29:27,972 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-10-21 12:29:27,974 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-21 12:29:28,316 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-10-21 12:29:28,318 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-10-21 12:29:28,318 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8, 8, 8] total 15 [2018-10-21 12:29:28,318 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-21 12:29:28,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-21 12:29:28,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-21 12:29:28,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2018-10-21 12:29:28,319 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 13 states. [2018-10-21 12:29:28,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-21 12:29:28,716 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-21 12:29:28,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-21 12:29:28,717 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2018-10-21 12:29:28,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-21 12:29:28,718 INFO L225 Difference]: With dead ends: 39 [2018-10-21 12:29:28,718 INFO L226 Difference]: Without dead ends: 0 [2018-10-21 12:29:28,719 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 114 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2018-10-21 12:29:28,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-21 12:29:28,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-21 12:29:28,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-21 12:29:28,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-21 12:29:28,720 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2018-10-21 12:29:28,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-21 12:29:28,721 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-21 12:29:28,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-21 12:29:28,721 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-21 12:29:28,721 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-21 12:29:28,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-21 12:29:28,973 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2018-10-21 12:29:29,062 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-10-21 12:29:29,063 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-10-21 12:29:29,063 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-21 12:29:29,063 INFO L428 ceAbstractionStarter]: At program point glob2ENTRY(lines 14 25) the Hoare annotation is: true [2018-10-21 12:29:29,063 INFO L425 ceAbstractionStarter]: For program point glob2EXIT(lines 14 25) no Hoare annotation was computed. [2018-10-21 12:29:29,064 INFO L421 ceAbstractionStarter]: At program point L20(line 20) the Hoare annotation is: (let ((.cse0 (= glob2_~pathlim.base ~tmp~0.base)) (.cse1 (= ~tmp~0.base glob2_~p~0.base))) (or (< ~tmp~0.offset 4) (< 4 |glob2_#in~pathlim.offset|) (not (= 0 |glob2_#in~pathbuf.offset|)) (not (= ~tmp~0.base |glob2_#in~pathbuf.base|)) (and (= glob2_~p~0.offset 0) .cse0 (<= glob2_~pathlim.offset 4) .cse1) (not (= ~tmp~0.base |glob2_#in~pathlim.base|)) (and (<= glob2_~p~0.offset ~tmp~0.offset) .cse0 (<= glob2_~pathlim.offset glob2_~p~0.offset) .cse1))) [2018-10-21 12:29:29,064 INFO L425 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-10-21 12:29:29,064 INFO L425 ceAbstractionStarter]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2018-10-21 12:29:29,064 INFO L425 ceAbstractionStarter]: For program point L18-3(lines 18 22) no Hoare annotation was computed. [2018-10-21 12:29:29,064 INFO L421 ceAbstractionStarter]: At program point L18-4(lines 18 22) the Hoare annotation is: (let ((.cse0 (= glob2_~pathlim.base ~tmp~0.base))) (or (< ~tmp~0.offset 4) (< 4 |glob2_#in~pathlim.offset|) (and (<= (+ glob2_~pathlim.offset 4) glob2_~p~0.offset) .cse0 (<= glob2_~pathlim.offset ~tmp~0.offset)) (not (= 0 |glob2_#in~pathbuf.offset|)) (not (= ~tmp~0.base |glob2_#in~pathbuf.base|)) (and (= glob2_~p~0.offset 0) .cse0 (<= glob2_~pathlim.offset 4) (= ~tmp~0.base glob2_~p~0.base)) (and (<= glob2_~p~0.offset ~tmp~0.offset) .cse0 (= glob2_~p~0.base ~tmp~0.base) (<= glob2_~pathlim.offset glob2_~p~0.offset)) (not (= ~tmp~0.base |glob2_#in~pathlim.base|)))) [2018-10-21 12:29:29,064 INFO L425 ceAbstractionStarter]: For program point L18-5(lines 18 22) no Hoare annotation was computed. [2018-10-21 12:29:29,064 INFO L425 ceAbstractionStarter]: For program point glob2FINAL(lines 14 25) no Hoare annotation was computed. [2018-10-21 12:29:29,064 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-21 12:29:29,065 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-21 12:29:29,065 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-21 12:29:29,065 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-21 12:29:29,065 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 27 38) the Hoare annotation is: true [2018-10-21 12:29:29,065 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 27 38) no Hoare annotation was computed. [2018-10-21 12:29:29,065 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 27 38) no Hoare annotation was computed. [2018-10-21 12:29:29,065 INFO L421 ceAbstractionStarter]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (+ |main_~#pathbuf~0.offset| 4))) (and (<= .cse0 ~tmp~0.offset) (<= main_~bound~0.offset .cse0) (= ~tmp~0.base main_~bound~0.base) (= ~tmp~0.base |main_~#pathbuf~0.base|) (= |main_~#pathbuf~0.offset| 0))) [2018-10-21 12:29:29,065 INFO L425 ceAbstractionStarter]: For program point L35-1(line 35) no Hoare annotation was computed. [2018-10-21 12:29:29,066 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-21 12:29:29,066 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-21 12:29:29,066 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-21 12:29:29,066 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-21 12:29:29,066 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-21 12:29:29,066 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-21 12:29:29,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 12:29:29 BoogieIcfgContainer [2018-10-21 12:29:29,084 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-21 12:29:29,084 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-21 12:29:29,084 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-21 12:29:29,084 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-21 12:29:29,085 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 12:29:23" (3/4) ... [2018-10-21 12:29:29,089 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-21 12:29:29,096 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-21 12:29:29,096 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure glob2 [2018-10-21 12:29:29,096 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-21 12:29:29,096 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-10-21 12:29:29,101 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2018-10-21 12:29:29,102 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-10-21 12:29:29,102 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-10-21 12:29:29,148 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/witness.graphml [2018-10-21 12:29:29,148 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-21 12:29:29,149 INFO L168 Benchmark]: Toolchain (without parser) took 6761.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 209.7 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -150.3 MB). Peak memory consumption was 59.4 MB. Max. memory is 11.5 GB. [2018-10-21 12:29:29,150 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-21 12:29:29,151 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.61 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-21 12:29:29,151 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.31 ms. Allocated memory is still 1.0 GB. Free memory was 942.4 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-21 12:29:29,152 INFO L168 Benchmark]: Boogie Preprocessor took 27.35 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-21 12:29:29,152 INFO L168 Benchmark]: RCFGBuilder took 650.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -167.7 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. [2018-10-21 12:29:29,153 INFO L168 Benchmark]: TraceAbstraction took 5677.26 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 74.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -6.5 MB). Peak memory consumption was 67.9 MB. Max. memory is 11.5 GB. [2018-10-21 12:29:29,154 INFO L168 Benchmark]: Witness Printer took 64.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 11.5 GB. [2018-10-21 12:29:29,158 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 293.61 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.31 ms. Allocated memory is still 1.0 GB. Free memory was 942.4 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.35 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 650.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -167.7 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5677.26 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 74.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -6.5 MB). Peak memory consumption was 67.9 MB. Max. memory is 11.5 GB. * Witness Printer took 64.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. 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: 18]: Loop Invariant Derived loop invariant: ((((((tmp < 4 || 4 < pathlim) || ((pathlim + 4 <= p && pathlim == tmp) && pathlim <= tmp)) || !(0 == pathbuf)) || !(tmp == pathbuf)) || (((p == 0 && pathlim == tmp) && pathlim <= 4) && tmp == p)) || (((p <= tmp && pathlim == tmp) && p == tmp) && pathlim <= p)) || !(tmp == pathlim) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. SAFE Result, 5.5s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 78 SDslu, 229 SDs, 0 SdLazy, 250 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 255 GetRequests, 187 SyntacticMatches, 18 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 12 PreInvPairs, 17 NumberOfFragments, 132 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 165 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 179 NumberOfCodeBlocks, 143 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 278 ConstructedInterpolants, 0 QuantifiedInterpolants, 32187 SizeOfPredicates, 38 NumberOfNonLiveVariables, 474 ConjunctsInSsa, 96 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 85/120 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...