./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/cggmp2005_variant.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e2f0d20c-7df0-4e7a-ad7d-6bb5a3722d9b/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e2f0d20c-7df0-4e7a-ad7d-6bb5a3722d9b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e2f0d20c-7df0-4e7a-ad7d-6bb5a3722d9b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e2f0d20c-7df0-4e7a-ad7d-6bb5a3722d9b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/cggmp2005_variant.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e2f0d20c-7df0-4e7a-ad7d-6bb5a3722d9b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e2f0d20c-7df0-4e7a-ad7d-6bb5a3722d9b/bin/utaipan --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 fb13e67548d34af589d64a91d36af5946c1dd198 .......................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:18:16,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:18:16,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:18:16,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:18:16,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:18:16,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:18:16,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:18:16,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:18:16,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:18:16,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:18:16,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:18:16,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:18:16,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:18:16,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:18:16,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:18:16,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:18:16,418 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:18:16,419 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:18:16,421 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:18:16,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:18:16,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:18:16,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:18:16,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:18:16,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:18:16,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:18:16,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:18:16,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:18:16,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:18:16,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:18:16,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:18:16,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:18:16,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:18:16,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:18:16,435 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:18:16,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:18:16,436 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:18:16,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:18:16,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:18:16,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:18:16,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:18:16,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:18:16,439 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e2f0d20c-7df0-4e7a-ad7d-6bb5a3722d9b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:18:16,461 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:18:16,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:18:16,462 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:18:16,463 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:18:16,463 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:18:16,463 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:18:16,463 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:18:16,463 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:18:16,464 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:18:16,464 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:18:16,465 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:18:16,465 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:18:16,465 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:18:16,465 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:18:16,465 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:18:16,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:18:16,466 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:18:16,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:18:16,467 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:18:16,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:18:16,467 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:18:16,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:18:16,468 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:18:16,468 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:18:16,468 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:18:16,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:18:16,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:18:16,469 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:18:16,469 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:18:16,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:18:16,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:18:16,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:18:16,470 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:18:16,470 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:18:16,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:18:16,470 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:18:16,470 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:18:16,471 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e2f0d20c-7df0-4e7a-ad7d-6bb5a3722d9b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! 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 -> fb13e67548d34af589d64a91d36af5946c1dd198 [2019-11-26 02:18:16,630 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:18:16,639 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:18:16,642 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:18:16,644 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:18:16,644 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:18:16,645 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e2f0d20c-7df0-4e7a-ad7d-6bb5a3722d9b/bin/utaipan/../../sv-benchmarks/c/loop-lit/cggmp2005_variant.i [2019-11-26 02:18:16,697 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e2f0d20c-7df0-4e7a-ad7d-6bb5a3722d9b/bin/utaipan/data/75f74eb89/61293d20fb344b92ae42d6e7c031b716/FLAGd2db2fdbf [2019-11-26 02:18:17,045 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:18:17,046 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e2f0d20c-7df0-4e7a-ad7d-6bb5a3722d9b/sv-benchmarks/c/loop-lit/cggmp2005_variant.i [2019-11-26 02:18:17,051 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e2f0d20c-7df0-4e7a-ad7d-6bb5a3722d9b/bin/utaipan/data/75f74eb89/61293d20fb344b92ae42d6e7c031b716/FLAGd2db2fdbf [2019-11-26 02:18:17,061 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e2f0d20c-7df0-4e7a-ad7d-6bb5a3722d9b/bin/utaipan/data/75f74eb89/61293d20fb344b92ae42d6e7c031b716 [2019-11-26 02:18:17,063 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:18:17,064 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:18:17,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:18:17,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:18:17,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:18:17,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:18:17" (1/1) ... [2019-11-26 02:18:17,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@748dd91e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:17, skipping insertion in model container [2019-11-26 02:18:17,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:18:17" (1/1) ... [2019-11-26 02:18:17,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:18:17,094 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:18:17,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:18:17,276 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:18:17,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:18:17,369 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:18:17,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:17 WrapperNode [2019-11-26 02:18:17,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:18:17,371 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:18:17,371 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:18:17,371 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:18:17,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:17" (1/1) ... [2019-11-26 02:18:17,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:17" (1/1) ... [2019-11-26 02:18:17,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:18:17,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:18:17,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:18:17,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:18:17,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:17" (1/1) ... [2019-11-26 02:18:17,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:17" (1/1) ... [2019-11-26 02:18:17,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:17" (1/1) ... [2019-11-26 02:18:17,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:17" (1/1) ... [2019-11-26 02:18:17,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:17" (1/1) ... [2019-11-26 02:18:17,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:17" (1/1) ... [2019-11-26 02:18:17,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:17" (1/1) ... [2019-11-26 02:18:17,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:18:17,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:18:17,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:18:17,414 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:18:17,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2f0d20c-7df0-4e7a-ad7d-6bb5a3722d9b/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:18:17,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:18:17,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:18:17,624 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:18:17,625 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-26 02:18:17,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:18:17 BoogieIcfgContainer [2019-11-26 02:18:17,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:18:17,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:18:17,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:18:17,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:18:17,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:18:17" (1/3) ... [2019-11-26 02:18:17,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235af5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:18:17, skipping insertion in model container [2019-11-26 02:18:17,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:17" (2/3) ... [2019-11-26 02:18:17,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235af5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:18:17, skipping insertion in model container [2019-11-26 02:18:17,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:18:17" (3/3) ... [2019-11-26 02:18:17,632 INFO L109 eAbstractionObserver]: Analyzing ICFG cggmp2005_variant.i [2019-11-26 02:18:17,652 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:18:17,674 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:18:17,683 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:18:17,738 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:18:17,738 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:18:17,738 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:18:17,738 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:18:17,739 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:18:17,739 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:18:17,739 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:18:17,739 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:18:17,751 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-26 02:18:17,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-26 02:18:17,770 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:18:17,771 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-26 02:18:17,771 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:18:17,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:18:17,776 INFO L82 PathProgramCache]: Analyzing trace with hash 29766720, now seen corresponding path program 1 times [2019-11-26 02:18:17,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:18:17,792 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852569320] [2019-11-26 02:18:17,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:18:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:18:17,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:18:17,906 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852569320] [2019-11-26 02:18:17,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:18:17,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 02:18:17,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164478256] [2019-11-26 02:18:17,911 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:18:17,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:18:17,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:18:17,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:18:17,922 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-11-26 02:18:17,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:18:17,951 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2019-11-26 02:18:17,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:18:17,953 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-26 02:18:17,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:18:17,960 INFO L225 Difference]: With dead ends: 16 [2019-11-26 02:18:17,961 INFO L226 Difference]: Without dead ends: 7 [2019-11-26 02:18:17,963 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:18:17,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-11-26 02:18:17,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-26 02:18:17,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-26 02:18:17,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-11-26 02:18:17,989 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2019-11-26 02:18:17,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:18:17,990 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-11-26 02:18:17,990 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:18:17,990 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-11-26 02:18:17,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 02:18:17,990 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:18:17,990 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-26 02:18:17,991 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:18:17,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:18:17,991 INFO L82 PathProgramCache]: Analyzing trace with hash 922156125, now seen corresponding path program 1 times [2019-11-26 02:18:17,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:18:17,991 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094743409] [2019-11-26 02:18:17,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:18:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:18:18,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:18:18,112 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094743409] [2019-11-26 02:18:18,112 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045167076] [2019-11-26 02:18:18,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2f0d20c-7df0-4e7a-ad7d-6bb5a3722d9b/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:18:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:18:18,161 WARN L253 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-26 02:18:18,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:18:18,260 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:18:18,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:18:18,298 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:18:18,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:18:18,375 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2058095658] [2019-11-26 02:18:18,403 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2019-11-26 02:18:18,404 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:18:18,418 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:18:18,431 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:18:18,431 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:18:18,677 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:18:18,838 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:18:18,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:18:18,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2019-11-26 02:18:18,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863349706] [2019-11-26 02:18:18,840 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-26 02:18:18,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:18:18,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-26 02:18:18,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2019-11-26 02:18:18,841 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 12 states. [2019-11-26 02:18:18,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:18:18,909 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2019-11-26 02:18:18,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:18:18,910 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 6 [2019-11-26 02:18:18,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:18:18,910 INFO L225 Difference]: With dead ends: 11 [2019-11-26 02:18:18,911 INFO L226 Difference]: Without dead ends: 8 [2019-11-26 02:18:18,912 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2019-11-26 02:18:18,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-26 02:18:18,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-26 02:18:18,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-26 02:18:18,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-26 02:18:18,914 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-11-26 02:18:18,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:18:18,915 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-26 02:18:18,915 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-26 02:18:18,915 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-26 02:18:18,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:18:18,915 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:18:18,915 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2019-11-26 02:18:19,116 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:18:19,116 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:18:19,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:18:19,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1478543392, now seen corresponding path program 2 times [2019-11-26 02:18:19,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:18:19,117 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136001805] [2019-11-26 02:18:19,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:18:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:18:19,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:18:19,204 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136001805] [2019-11-26 02:18:19,204 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015187592] [2019-11-26 02:18:19,205 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2f0d20c-7df0-4e7a-ad7d-6bb5a3722d9b/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:18:19,240 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-26 02:18:19,240 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:18:19,241 WARN L253 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-26 02:18:19,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:18:19,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:18:19,344 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:18:19,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:18:19,421 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [779781786] [2019-11-26 02:18:19,422 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2019-11-26 02:18:19,422 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:18:19,423 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:18:19,423 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:18:19,423 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:18:19,533 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:18:19,671 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:18:19,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:18:19,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 12 [2019-11-26 02:18:19,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365859723] [2019-11-26 02:18:19,672 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-26 02:18:19,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:18:19,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-26 02:18:19,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2019-11-26 02:18:19,673 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 13 states. [2019-11-26 02:18:19,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:18:19,931 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2019-11-26 02:18:19,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-26 02:18:19,932 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 7 [2019-11-26 02:18:19,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:18:19,932 INFO L225 Difference]: With dead ends: 10 [2019-11-26 02:18:19,932 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:18:19,933 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2019-11-26 02:18:19,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:18:19,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:18:19,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:18:19,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:18:19,936 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-11-26 02:18:19,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:18:19,936 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:18:19,936 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-26 02:18:19,936 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:18:19,936 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:18:20,137 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:18:20,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:18:20,174 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:18:20,174 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-26 02:18:20,174 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:18:20,175 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-26 02:18:20,175 INFO L447 ceAbstractionStarter]: At program point L22(lines 10 23) the Hoare annotation is: true [2019-11-26 02:18:20,175 INFO L444 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-11-26 02:18:20,175 INFO L440 ceAbstractionStarter]: At program point L16-2(lines 16 20) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~lo~0 (* 2 ULTIMATE.start_main_~mid~0)))) (and (<= ULTIMATE.start_main_~hi~0 .cse0) (<= .cse0 ULTIMATE.start_main_~hi~0) (<= ULTIMATE.start_main_~lo~0 ULTIMATE.start_main_~hi~0))) [2019-11-26 02:18:20,175 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-26 02:18:20,175 INFO L447 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2019-11-26 02:18:20,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:18:20 BoogieIcfgContainer [2019-11-26 02:18:20,187 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:18:20,187 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:18:20,187 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:18:20,188 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:18:20,188 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:18:17" (3/4) ... [2019-11-26 02:18:20,191 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:18:20,200 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-26 02:18:20,200 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-26 02:18:20,236 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e2f0d20c-7df0-4e7a-ad7d-6bb5a3722d9b/bin/utaipan/witness.graphml [2019-11-26 02:18:20,237 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:18:20,238 INFO L168 Benchmark]: Toolchain (without parser) took 3173.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 944.7 MB in the beginning and 912.5 MB in the end (delta: 32.3 MB). Peak memory consumption was 164.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:18:20,239 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:18:20,240 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -182.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:18:20,240 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.98 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:18:20,240 INFO L168 Benchmark]: Boogie Preprocessor took 15.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:18:20,241 INFO L168 Benchmark]: RCFGBuilder took 212.35 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: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:18:20,241 INFO L168 Benchmark]: TraceAbstraction took 2560.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 912.5 MB in the end (delta: 195.9 MB). Peak memory consumption was 195.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:18:20,242 INFO L168 Benchmark]: Witness Printer took 49.51 ms. Allocated memory is still 1.2 GB. Free memory is still 912.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:18:20,244 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 303.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -182.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.98 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. * Boogie Preprocessor took 15.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 212.35 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: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2560.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 912.5 MB in the end (delta: 195.9 MB). Peak memory consumption was 195.9 MB. Max. memory is 11.5 GB. * Witness Printer took 49.51 ms. Allocated memory is still 1.2 GB. Free memory is still 912.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 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: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (hi <= lo + 2 * mid && lo + 2 * mid <= hi) && lo <= hi - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: SAFE, OverallTime: 2.4s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 13 SDslu, 25 SDs, 0 SdLazy, 64 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 8 NumberOfFragments, 20 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 89 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 1697 SizeOfPredicates, 12 NumberOfNonLiveVariables, 61 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 1/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...