./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_88e703f5-3df4-418f-b0de-57570bba0194/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_88e703f5-3df4-418f-b0de-57570bba0194/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_88e703f5-3df4-418f-b0de-57570bba0194/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_88e703f5-3df4-418f-b0de-57570bba0194/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_88e703f5-3df4-418f-b0de-57570bba0194/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_88e703f5-3df4-418f-b0de-57570bba0194/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 375e158327910cae8c3594f7d2ad0376509a1ecb ......................................................................................................................................................................................................................................................................................... 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-cad4683 [2019-10-22 11:23:35,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:23:35,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:23:35,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:23:35,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:23:35,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:23:35,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:23:35,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:23:35,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:23:35,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:23:35,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:23:35,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:23:35,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:23:35,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:23:35,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:23:35,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:23:35,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:23:35,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:23:35,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:23:35,416 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:23:35,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:23:35,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:23:35,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:23:35,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:23:35,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:23:35,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:23:35,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:23:35,422 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:23:35,422 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:23:35,423 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:23:35,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:23:35,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:23:35,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:23:35,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:23:35,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:23:35,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:23:35,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:23:35,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:23:35,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:23:35,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:23:35,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:23:35,429 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_88e703f5-3df4-418f-b0de-57570bba0194/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:23:35,439 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:23:35,439 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:23:35,440 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:23:35,440 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:23:35,440 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:23:35,440 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:23:35,440 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:23:35,441 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:23:35,441 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:23:35,441 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:23:35,441 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:23:35,441 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:23:35,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:23:35,442 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:23:35,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:23:35,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:23:35,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:23:35,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:23:35,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:23:35,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:23:35,443 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:23:35,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:23:35,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:23:35,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:23:35,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:23:35,446 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:23:35,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:23:35,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:23:35,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:23:35,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:23:35,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:23:35,447 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:23:35,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:23:35,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:23:35,448 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:23:35,448 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/working_dir_88e703f5-3df4-418f-b0de-57570bba0194/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 -> 375e158327910cae8c3594f7d2ad0376509a1ecb [2019-10-22 11:23:35,481 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:23:35,492 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:23:35,495 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:23:35,497 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:23:35,497 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:23:35,498 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_88e703f5-3df4-418f-b0de-57570bba0194/bin/utaipan/../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-1.c [2019-10-22 11:23:35,542 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_88e703f5-3df4-418f-b0de-57570bba0194/bin/utaipan/data/310c053a4/997afb26e64f49b694e747918ab82621/FLAG3a4434ee3 [2019-10-22 11:23:35,922 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:23:35,923 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_88e703f5-3df4-418f-b0de-57570bba0194/sv-benchmarks/c/systemc/pc_sfifo_1.cil-1.c [2019-10-22 11:23:35,933 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_88e703f5-3df4-418f-b0de-57570bba0194/bin/utaipan/data/310c053a4/997afb26e64f49b694e747918ab82621/FLAG3a4434ee3 [2019-10-22 11:23:36,327 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_88e703f5-3df4-418f-b0de-57570bba0194/bin/utaipan/data/310c053a4/997afb26e64f49b694e747918ab82621 [2019-10-22 11:23:36,330 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:23:36,331 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:23:36,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:36,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:23:36,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:23:36,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:36" (1/1) ... [2019-10-22 11:23:36,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4432754c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:36, skipping insertion in model container [2019-10-22 11:23:36,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:36" (1/1) ... [2019-10-22 11:23:36,346 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:23:36,375 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:23:36,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:36,604 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:23:36,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:36,642 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:23:36,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:36 WrapperNode [2019-10-22 11:23:36,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:36,643 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:36,643 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:23:36,643 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:23:36,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:36" (1/1) ... [2019-10-22 11:23:36,654 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:36" (1/1) ... [2019-10-22 11:23:36,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:36,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:23:36,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:23:36,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:23:36,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:36" (1/1) ... [2019-10-22 11:23:36,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:36" (1/1) ... [2019-10-22 11:23:36,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:36" (1/1) ... [2019-10-22 11:23:36,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:36" (1/1) ... [2019-10-22 11:23:36,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:36" (1/1) ... [2019-10-22 11:23:36,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:36" (1/1) ... [2019-10-22 11:23:36,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:36" (1/1) ... [2019-10-22 11:23:36,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:23:36,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:23:36,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:23:36,725 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:23:36,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_88e703f5-3df4-418f-b0de-57570bba0194/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 [2019-10-22 11:23:36,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:23:36,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:23:37,299 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:23:37,299 INFO L284 CfgBuilder]: Removed 44 assume(true) statements. [2019-10-22 11:23:37,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:37 BoogieIcfgContainer [2019-10-22 11:23:37,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:23:37,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:23:37,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:23:37,303 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:23:37,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:23:36" (1/3) ... [2019-10-22 11:23:37,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53b66a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:37, skipping insertion in model container [2019-10-22 11:23:37,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:36" (2/3) ... [2019-10-22 11:23:37,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53b66a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:37, skipping insertion in model container [2019-10-22 11:23:37,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:37" (3/3) ... [2019-10-22 11:23:37,306 INFO L109 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-1.c [2019-10-22 11:23:37,316 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:23:37,323 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:23:37,333 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:23:37,356 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:23:37,356 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:23:37,356 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:23:37,356 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:23:37,357 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:23:37,357 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:23:37,357 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:23:37,357 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:23:37,370 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2019-10-22 11:23:37,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:23:37,376 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:37,377 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:37,379 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:37,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:37,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1783037367, now seen corresponding path program 1 times [2019-10-22 11:23:37,393 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:37,393 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313788942] [2019-10-22 11:23:37,394 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:37,394 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:37,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:23:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:23:37,502 INFO L168 tionRefinementEngine]: Strategy TAIPAN found a feasible trace [2019-10-22 11:23:37,503 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:23:37,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:23:37 BoogieIcfgContainer [2019-10-22 11:23:37,538 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:23:37,539 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:23:37,539 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:23:37,539 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:23:37,540 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:37" (3/4) ... [2019-10-22 11:23:37,541 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:23:37,597 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_88e703f5-3df4-418f-b0de-57570bba0194/bin/utaipan/witness.graphml [2019-10-22 11:23:37,597 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:23:37,599 INFO L168 Benchmark]: Toolchain (without parser) took 1267.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -142.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:23:37,599 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:23:37,600 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -194.8 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:37,600 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.12 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:37,600 INFO L168 Benchmark]: Boogie Preprocessor took 46.66 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:37,601 INFO L168 Benchmark]: RCFGBuilder took 576.09 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: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:37,601 INFO L168 Benchmark]: TraceAbstraction took 237.49 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: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:37,602 INFO L168 Benchmark]: Witness Printer took 58.52 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: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:37,604 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 311.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -194.8 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.12 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 46.66 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 576.09 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: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 237.49 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: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. * Witness Printer took 58.52 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: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 9]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int q_buf_0 ; [L15] int q_free ; [L16] int q_read_ev ; [L17] int q_write_ev ; [L18] int p_num_write ; [L19] int p_last_write ; [L20] int p_dw_st ; [L21] int p_dw_pc ; [L22] int p_dw_i ; [L23] int c_num_read ; [L24] int c_last_read ; [L25] int c_dr_st ; [L26] int c_dr_pc ; [L27] int c_dr_i ; [L134] static int a_t ; VAL [a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=0, q_read_ev=0, q_write_ev=0] [L350] int __retres1 ; [L336] q_free = 1 [L337] q_write_ev = 2 [L338] q_read_ev = q_write_ev [L339] p_num_write = 0 [L340] p_dw_pc = 0 [L341] p_dw_i = 1 [L342] c_num_read = 0 [L343] c_dr_pc = 0 [L344] c_dr_i = 1 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L304] int kernel_st ; [L305] int tmp ; [L309] kernel_st = 0 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L196] COND TRUE (int )p_dw_i == 1 [L197] p_dw_st = 0 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L201] COND TRUE (int )c_dr_i == 1 [L202] c_dr_st = 0 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L313] COND TRUE 1 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L316] kernel_st = 1 [L231] int tmp ; [L232] int tmp___0 ; [L233] int tmp___1 ; VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L237] COND TRUE 1 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L211] int __retres1 ; VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L214] COND TRUE (int )p_dw_st == 0 [L215] __retres1 = 1 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L227] return (__retres1); VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L240] tmp___1 = exists_runnable_thread() [L242] COND TRUE \read(tmp___1) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L247] COND TRUE (int )p_dw_st == 0 [L249] tmp = __VERIFIER_nondet_int() [L251] COND FALSE !(\read(tmp)) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L9] __VERIFIER_error() VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 78 locations, 3 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=78occurred 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, 16 NumberOfCodeBlocks, 16 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...