./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/simple_3-1.c --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_00c1c16d-f6ec-4374-8812-4eec8b72b7aa/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_00c1c16d-f6ec-4374-8812-4eec8b72b7aa/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_00c1c16d-f6ec-4374-8812-4eec8b72b7aa/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_00c1c16d-f6ec-4374-8812-4eec8b72b7aa/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-acceleration/simple_3-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_00c1c16d-f6ec-4374-8812-4eec8b72b7aa/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_00c1c16d-f6ec-4374-8812-4eec8b72b7aa/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 be63c976650441aaee3d3a743a32b09c44df32d0 ................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:21:11,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:21:11,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:21:11,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:21:11,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:21:11,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:21:11,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:21:11,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:21:11,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:21:11,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:21:11,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:21:11,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:21:11,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:21:11,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:21:11,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:21:11,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:21:11,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:21:11,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:21:11,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:21:11,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:21:11,324 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:21:11,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:21:11,328 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:21:11,329 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:21:11,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:21:11,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:21:11,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:21:11,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:21:11,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:21:11,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:21:11,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:21:11,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:21:11,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:21:11,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:21:11,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:21:11,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:21:11,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:21:11,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:21:11,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:21:11,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:21:11,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:21:11,343 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_00c1c16d-f6ec-4374-8812-4eec8b72b7aa/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:21:11,368 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:21:11,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:21:11,369 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:21:11,369 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:21:11,369 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:21:11,370 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:21:11,370 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:21:11,370 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:21:11,370 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:21:11,370 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:21:11,371 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:21:11,371 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:21:11,371 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:21:11,371 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:21:11,371 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:21:11,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:21:11,372 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:21:11,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:21:11,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:21:11,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:21:11,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:21:11,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:21:11,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:21:11,373 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:21:11,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:21:11,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:21:11,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:21:11,374 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:21:11,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:21:11,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:21:11,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:21:11,385 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:21:11,385 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:21:11,386 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:21:11,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:21:11,386 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:21:11,386 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:21:11,386 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_00c1c16d-f6ec-4374-8812-4eec8b72b7aa/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 -> be63c976650441aaee3d3a743a32b09c44df32d0 [2019-11-26 02:21:11,540 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:21:11,555 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:21:11,558 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:21:11,567 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:21:11,567 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:21:11,568 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_00c1c16d-f6ec-4374-8812-4eec8b72b7aa/bin/utaipan/../../sv-benchmarks/c/loop-acceleration/simple_3-1.c [2019-11-26 02:21:11,629 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_00c1c16d-f6ec-4374-8812-4eec8b72b7aa/bin/utaipan/data/718f5951f/30ffafca816543f895d6f7b7fd384043/FLAGc9b48c577 [2019-11-26 02:21:11,958 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:21:11,959 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_00c1c16d-f6ec-4374-8812-4eec8b72b7aa/sv-benchmarks/c/loop-acceleration/simple_3-1.c [2019-11-26 02:21:11,964 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_00c1c16d-f6ec-4374-8812-4eec8b72b7aa/bin/utaipan/data/718f5951f/30ffafca816543f895d6f7b7fd384043/FLAGc9b48c577 [2019-11-26 02:21:12,360 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_00c1c16d-f6ec-4374-8812-4eec8b72b7aa/bin/utaipan/data/718f5951f/30ffafca816543f895d6f7b7fd384043 [2019-11-26 02:21:12,362 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:21:12,363 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:21:12,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:21:12,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:21:12,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:21:12,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:21:12" (1/1) ... [2019-11-26 02:21:12,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d514528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:12, skipping insertion in model container [2019-11-26 02:21:12,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:21:12" (1/1) ... [2019-11-26 02:21:12,377 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:21:12,391 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:21:12,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:21:12,531 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:21:12,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:21:12,613 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:21:12,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:12 WrapperNode [2019-11-26 02:21:12,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:21:12,614 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:21:12,614 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:21:12,614 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:21:12,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:12" (1/1) ... [2019-11-26 02:21:12,627 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:12" (1/1) ... [2019-11-26 02:21:12,641 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:21:12,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:21:12,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:21:12,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:21:12,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:12" (1/1) ... [2019-11-26 02:21:12,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:12" (1/1) ... [2019-11-26 02:21:12,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:12" (1/1) ... [2019-11-26 02:21:12,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:12" (1/1) ... [2019-11-26 02:21:12,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:12" (1/1) ... [2019-11-26 02:21:12,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:12" (1/1) ... [2019-11-26 02:21:12,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:12" (1/1) ... [2019-11-26 02:21:12,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:21:12,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:21:12,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:21:12,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:21:12,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00c1c16d-f6ec-4374-8812-4eec8b72b7aa/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 02:21:12,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:21:12,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:21:12,863 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:21:12,863 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-26 02:21:12,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:21:12 BoogieIcfgContainer [2019-11-26 02:21:12,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:21:12,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:21:12,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:21:12,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:21:12,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:21:12" (1/3) ... [2019-11-26 02:21:12,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2efa1ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:21:12, skipping insertion in model container [2019-11-26 02:21:12,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:12" (2/3) ... [2019-11-26 02:21:12,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2efa1ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:21:12, skipping insertion in model container [2019-11-26 02:21:12,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:21:12" (3/3) ... [2019-11-26 02:21:12,870 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_3-1.c [2019-11-26 02:21:12,876 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:21:12,880 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:21:12,889 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:21:12,906 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:21:12,907 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:21:12,907 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:21:12,907 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:21:12,907 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:21:12,907 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:21:12,908 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:21:12,908 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:21:12,917 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2019-11-26 02:21:12,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-26 02:21:12,921 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:21:12,922 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-26 02:21:12,922 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:21:12,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:21:12,928 INFO L82 PathProgramCache]: Analyzing trace with hash 982688, now seen corresponding path program 1 times [2019-11-26 02:21:12,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:21:12,936 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192799265] [2019-11-26 02:21:12,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:21:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:21:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:21:13,047 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:21:13,048 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:21:13,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:21:13 BoogieIcfgContainer [2019-11-26 02:21:13,061 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:21:13,062 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:21:13,062 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:21:13,062 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:21:13,062 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:21:12" (3/4) ... [2019-11-26 02:21:13,064 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:21:13,092 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_00c1c16d-f6ec-4374-8812-4eec8b72b7aa/bin/utaipan/witness.graphml [2019-11-26 02:21:13,092 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:21:13,094 INFO L168 Benchmark]: Toolchain (without parser) took 730.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.2 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -186.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:21:13,095 INFO L168 Benchmark]: CDTParser took 0.17 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 02:21:13,095 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.2 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -225.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:21:13,096 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.19 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:21:13,096 INFO L168 Benchmark]: Boogie Preprocessor took 15.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:21:13,097 INFO L168 Benchmark]: RCFGBuilder took 206.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:21:13,098 INFO L168 Benchmark]: TraceAbstraction took 196.67 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: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:21:13,098 INFO L168 Benchmark]: Witness Printer took 30.68 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:21:13,102 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 250.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.2 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -225.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.19 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 206.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 196.67 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: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. * Witness Printer took 30.68 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] unsigned int x = 0; [L13] unsigned short N = __VERIFIER_nondet_ushort(); [L15] COND FALSE !(x < N) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 incorrect! Received shutdown request...