./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/condmf.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_f580766d-05e3-44ff-9df6-9992fcbdbf9c/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f580766d-05e3-44ff-9df6-9992fcbdbf9c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f580766d-05e3-44ff-9df6-9992fcbdbf9c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f580766d-05e3-44ff-9df6-9992fcbdbf9c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/condmf.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f580766d-05e3-44ff-9df6-9992fcbdbf9c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f580766d-05e3-44ff-9df6-9992fcbdbf9c/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 4c5d8bd66f1102b00780234ee620f69cce916c4d ...................................................................................................................................................................................................................................................................................................................................... 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 02:11:32,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:11:32,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:11:32,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:11:32,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:11:32,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:11:32,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:11:32,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:11:32,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:11:32,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:11:32,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:11:32,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:11:32,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:11:32,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:11:32,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:11:32,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:11:32,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:11:32,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:11:32,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:11:32,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:11:32,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:11:32,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:11:32,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:11:32,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:11:32,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:11:32,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:11:32,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:11:32,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:11:32,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:11:32,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:11:32,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:11:32,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:11:32,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:11:32,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:11:32,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:11:32,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:11:32,373 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:11:32,373 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:11:32,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:11:32,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:11:32,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:11:32,376 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f580766d-05e3-44ff-9df6-9992fcbdbf9c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:11:32,400 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:11:32,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:11:32,411 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:11:32,411 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:11:32,411 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:11:32,412 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:11:32,412 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:11:32,412 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:11:32,412 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:11:32,413 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:11:32,413 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:11:32,413 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:11:32,413 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:11:32,415 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:11:32,415 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:11:32,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:11:32,416 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:11:32,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:11:32,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:11:32,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:11:32,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:11:32,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:11:32,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:11:32,420 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:11:32,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:11:32,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:11:32,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:11:32,421 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:11:32,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:11:32,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:11:32,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:11:32,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:11:32,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:11:32,423 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:11:32,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:11:32,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:11:32,424 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:11:32,424 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_f580766d-05e3-44ff-9df6-9992fcbdbf9c/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 -> 4c5d8bd66f1102b00780234ee620f69cce916c4d [2019-11-26 02:11:32,552 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:11:32,562 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:11:32,564 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:11:32,566 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:11:32,566 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:11:32,567 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f580766d-05e3-44ff-9df6-9992fcbdbf9c/bin/utaipan/../../sv-benchmarks/c/array-fpi/condmf.c [2019-11-26 02:11:32,624 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f580766d-05e3-44ff-9df6-9992fcbdbf9c/bin/utaipan/data/ef366aece/ddf6600d60d94b6a949edae19709de37/FLAG7f25d950d [2019-11-26 02:11:33,004 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:11:33,005 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f580766d-05e3-44ff-9df6-9992fcbdbf9c/sv-benchmarks/c/array-fpi/condmf.c [2019-11-26 02:11:33,011 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f580766d-05e3-44ff-9df6-9992fcbdbf9c/bin/utaipan/data/ef366aece/ddf6600d60d94b6a949edae19709de37/FLAG7f25d950d [2019-11-26 02:11:33,024 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f580766d-05e3-44ff-9df6-9992fcbdbf9c/bin/utaipan/data/ef366aece/ddf6600d60d94b6a949edae19709de37 [2019-11-26 02:11:33,027 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:11:33,029 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:11:33,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:11:33,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:11:33,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:11:33,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:11:33" (1/1) ... [2019-11-26 02:11:33,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16a08a10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:11:33, skipping insertion in model container [2019-11-26 02:11:33,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:11:33" (1/1) ... [2019-11-26 02:11:33,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:11:33,064 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:11:33,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:11:33,354 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:11:33,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:11:33,397 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:11:33,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:11:33 WrapperNode [2019-11-26 02:11:33,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:11:33,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:11:33,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:11:33,399 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:11:33,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:11:33" (1/1) ... [2019-11-26 02:11:33,414 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:11:33" (1/1) ... [2019-11-26 02:11:33,441 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:11:33,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:11:33,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:11:33,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:11:33,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:11:33" (1/1) ... [2019-11-26 02:11:33,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:11:33" (1/1) ... [2019-11-26 02:11:33,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:11:33" (1/1) ... [2019-11-26 02:11:33,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:11:33" (1/1) ... [2019-11-26 02:11:33,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:11:33" (1/1) ... [2019-11-26 02:11:33,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:11:33" (1/1) ... [2019-11-26 02:11:33,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:11:33" (1/1) ... [2019-11-26 02:11:33,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:11:33,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:11:33,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:11:33,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:11:33,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:11:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f580766d-05e3-44ff-9df6-9992fcbdbf9c/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 02:11:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:11:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-26 02:11:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:11:33,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:11:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:11:33,853 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:11:33,854 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-26 02:11:33,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:11:33 BoogieIcfgContainer [2019-11-26 02:11:33,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:11:33,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:11:33,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:11:33,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:11:33,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:11:33" (1/3) ... [2019-11-26 02:11:33,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a73b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:11:33, skipping insertion in model container [2019-11-26 02:11:33,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:11:33" (2/3) ... [2019-11-26 02:11:33,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a73b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:11:33, skipping insertion in model container [2019-11-26 02:11:33,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:11:33" (3/3) ... [2019-11-26 02:11:33,861 INFO L109 eAbstractionObserver]: Analyzing ICFG condmf.c [2019-11-26 02:11:33,869 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:11:33,875 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:11:33,895 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:11:33,914 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:11:33,914 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:11:33,914 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:11:33,914 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:11:33,915 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:11:33,915 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:11:33,915 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:11:33,915 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:11:33,925 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-26 02:11:33,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:11:33,929 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:11:33,930 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:11:33,930 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:11:33,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:11:33,934 INFO L82 PathProgramCache]: Analyzing trace with hash -2056698224, now seen corresponding path program 1 times [2019-11-26 02:11:33,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:11:33,941 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382416578] [2019-11-26 02:11:33,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:11:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:11:34,102 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 02:11:34,103 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382416578] [2019-11-26 02:11:34,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:11:34,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 02:11:34,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140186236] [2019-11-26 02:11:34,108 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:11:34,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:11:34,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:11:34,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:11:34,122 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2019-11-26 02:11:34,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:11:34,165 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2019-11-26 02:11:34,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:11:34,167 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-26 02:11:34,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:11:34,172 INFO L225 Difference]: With dead ends: 20 [2019-11-26 02:11:34,172 INFO L226 Difference]: Without dead ends: 10 [2019-11-26 02:11:34,175 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 02:11:34,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-26 02:11:34,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-26 02:11:34,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-26 02:11:34,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2019-11-26 02:11:34,201 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2019-11-26 02:11:34,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:11:34,202 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-11-26 02:11:34,202 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:11:34,202 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2019-11-26 02:11:34,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:11:34,202 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:11:34,203 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:11:34,203 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:11:34,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:11:34,203 INFO L82 PathProgramCache]: Analyzing trace with hash 411880435, now seen corresponding path program 1 times [2019-11-26 02:11:34,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:11:34,204 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348311012] [2019-11-26 02:11:34,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:11:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:11:34,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:11:34,260 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348311012] [2019-11-26 02:11:34,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:11:34,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 02:11:34,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757386669] [2019-11-26 02:11:34,262 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:11:34,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:11:34,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:11:34,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:11:34,262 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 4 states. [2019-11-26 02:11:34,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:11:34,293 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2019-11-26 02:11:34,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:11:34,293 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-26 02:11:34,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:11:34,294 INFO L225 Difference]: With dead ends: 21 [2019-11-26 02:11:34,294 INFO L226 Difference]: Without dead ends: 16 [2019-11-26 02:11:34,295 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:11:34,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-26 02:11:34,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 11. [2019-11-26 02:11:34,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-26 02:11:34,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-11-26 02:11:34,299 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2019-11-26 02:11:34,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:11:34,299 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-11-26 02:11:34,299 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:11:34,299 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2019-11-26 02:11:34,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:11:34,300 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:11:34,300 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:11:34,300 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:11:34,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:11:34,300 INFO L82 PathProgramCache]: Analyzing trace with hash -117624189, now seen corresponding path program 1 times [2019-11-26 02:11:34,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:11:34,301 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364362550] [2019-11-26 02:11:34,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:11:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:11:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:11:34,437 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:11:34,437 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:11:34,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:11:34 BoogieIcfgContainer [2019-11-26 02:11:34,463 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:11:34,463 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:11:34,463 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:11:34,463 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:11:34,464 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:11:33" (3/4) ... [2019-11-26 02:11:34,466 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:11:34,506 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f580766d-05e3-44ff-9df6-9992fcbdbf9c/bin/utaipan/witness.graphml [2019-11-26 02:11:34,506 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:11:34,513 INFO L168 Benchmark]: Toolchain (without parser) took 1478.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 188.7 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -172.2 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:11:34,513 INFO L168 Benchmark]: CDTParser took 0.16 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 02:11:34,514 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 188.7 MB). Free memory was 943.4 MB in the beginning and 1.2 GB in the end (delta: -240.2 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:11:34,514 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.62 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 02:11:34,515 INFO L168 Benchmark]: Boogie Preprocessor took 20.60 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:11:34,515 INFO L168 Benchmark]: RCFGBuilder took 392.97 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:11:34,516 INFO L168 Benchmark]: TraceAbstraction took 606.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 38.9 MB). Peak memory consumption was 38.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:11:34,516 INFO L168 Benchmark]: Witness Printer took 43.59 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 02:11:34,518 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 366.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 188.7 MB). Free memory was 943.4 MB in the beginning and 1.2 GB in the end (delta: -240.2 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.62 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 20.60 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 392.97 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 606.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 38.9 MB). Peak memory consumption was 38.9 MB. Max. memory is 11.5 GB. * Witness Printer took 43.59 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int N; [L18] N = __VERIFIER_nondet_int() [L19] COND FALSE !(N <= 0) [L22] int i; [L23] int *a = malloc(sizeof(int)*N); [L25] i = 0 VAL [N=1] [L25] COND TRUE i < N [L27] a[i] = 0 [L25] i++ VAL [N=1] [L25] COND FALSE !(i < N) [L30] i = 0 VAL [N=1] [L30] COND TRUE i < N [L32] COND TRUE N%2 == 1 [L34] EXPR a[i] [L34] a[i] = a[i] + 2 [L30] i++ VAL [N=1] [L30] COND FALSE !(i < N) [L42] i = 0 VAL [N=1] [L42] COND TRUE i < N [L44] a[i] [L10] COND TRUE !(cond) VAL [N=1] [L10] __VERIFIER_error() VAL [N=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 16 SDslu, 7 SDs, 0 SdLazy, 21 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 191 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 1/1 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...