./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_513884ed-434b-41be-b385-64a0251002bd/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_513884ed-434b-41be-b385-64a0251002bd/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_513884ed-434b-41be-b385-64a0251002bd/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_513884ed-434b-41be-b385-64a0251002bd/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_513884ed-434b-41be-b385-64a0251002bd/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_513884ed-434b-41be-b385-64a0251002bd/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 0.1.25-f470102 [2019-12-07 19:18:38,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 19:18:38,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 19:18:38,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 19:18:38,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 19:18:38,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 19:18:38,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 19:18:38,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 19:18:38,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 19:18:38,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 19:18:38,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 19:18:38,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 19:18:38,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 19:18:38,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 19:18:38,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 19:18:38,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 19:18:38,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 19:18:38,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 19:18:38,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 19:18:38,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 19:18:38,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 19:18:38,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 19:18:38,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 19:18:38,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 19:18:38,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 19:18:38,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 19:18:38,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 19:18:38,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 19:18:38,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 19:18:38,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 19:18:38,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 19:18:38,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 19:18:38,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 19:18:38,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 19:18:38,380 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 19:18:38,380 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 19:18:38,381 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 19:18:38,381 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 19:18:38,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 19:18:38,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 19:18:38,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 19:18:38,383 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_513884ed-434b-41be-b385-64a0251002bd/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 19:18:38,396 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 19:18:38,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 19:18:38,397 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 19:18:38,397 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 19:18:38,397 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 19:18:38,397 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 19:18:38,397 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 19:18:38,398 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 19:18:38,398 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 19:18:38,398 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 19:18:38,398 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 19:18:38,398 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 19:18:38,399 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 19:18:38,399 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 19:18:38,399 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 19:18:38,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 19:18:38,400 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 19:18:38,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 19:18:38,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 19:18:38,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 19:18:38,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 19:18:38,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 19:18:38,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 19:18:38,401 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 19:18:38,401 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 19:18:38,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 19:18:38,402 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 19:18:38,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 19:18:38,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 19:18:38,402 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 19:18:38,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 19:18:38,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 19:18:38,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 19:18:38,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 19:18:38,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 19:18:38,404 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 19:18:38,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 19:18:38,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 19:18:38,404 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 19:18:38,404 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 19:18:38,404 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_513884ed-434b-41be-b385-64a0251002bd/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 [2019-12-07 19:18:38,514 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 19:18:38,521 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 19:18:38,524 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 19:18:38,524 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 19:18:38,525 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 19:18:38,525 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_513884ed-434b-41be-b385-64a0251002bd/bin/utaipan/../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-1.c [2019-12-07 19:18:38,564 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_513884ed-434b-41be-b385-64a0251002bd/bin/utaipan/data/97690dd58/6cc210229cb149499a7a0bcffe8f03fd/FLAG7c2c3c035 [2019-12-07 19:18:38,983 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 19:18:38,984 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_513884ed-434b-41be-b385-64a0251002bd/sv-benchmarks/c/systemc/pc_sfifo_1.cil-1.c [2019-12-07 19:18:38,989 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_513884ed-434b-41be-b385-64a0251002bd/bin/utaipan/data/97690dd58/6cc210229cb149499a7a0bcffe8f03fd/FLAG7c2c3c035 [2019-12-07 19:18:38,997 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_513884ed-434b-41be-b385-64a0251002bd/bin/utaipan/data/97690dd58/6cc210229cb149499a7a0bcffe8f03fd [2019-12-07 19:18:38,999 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 19:18:39,000 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 19:18:39,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 19:18:39,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 19:18:39,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 19:18:39,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:18:38" (1/1) ... [2019-12-07 19:18:39,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f14c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:18:39, skipping insertion in model container [2019-12-07 19:18:39,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:18:38" (1/1) ... [2019-12-07 19:18:39,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 19:18:39,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 19:18:39,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:18:39,207 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 19:18:39,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:18:39,242 INFO L208 MainTranslator]: Completed translation [2019-12-07 19:18:39,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:18:39 WrapperNode [2019-12-07 19:18:39,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 19:18:39,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 19:18:39,243 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 19:18:39,243 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 19:18:39,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:18:39" (1/1) ... [2019-12-07 19:18:39,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:18:39" (1/1) ... [2019-12-07 19:18:39,273 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 19:18:39,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 19:18:39,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 19:18:39,273 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 19:18:39,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:18:39" (1/1) ... [2019-12-07 19:18:39,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:18:39" (1/1) ... [2019-12-07 19:18:39,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:18:39" (1/1) ... [2019-12-07 19:18:39,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:18:39" (1/1) ... [2019-12-07 19:18:39,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:18:39" (1/1) ... [2019-12-07 19:18:39,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:18:39" (1/1) ... [2019-12-07 19:18:39,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:18:39" (1/1) ... [2019-12-07 19:18:39,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 19:18:39,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 19:18:39,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 19:18:39,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 19:18:39,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:18:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_513884ed-434b-41be-b385-64a0251002bd/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 [2019-12-07 19:18:39,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 19:18:39,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 19:18:39,710 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 19:18:39,710 INFO L287 CfgBuilder]: Removed 44 assume(true) statements. [2019-12-07 19:18:39,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:18:39 BoogieIcfgContainer [2019-12-07 19:18:39,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 19:18:39,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 19:18:39,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 19:18:39,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 19:18:39,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 07:18:38" (1/3) ... [2019-12-07 19:18:39,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e32e834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:18:39, skipping insertion in model container [2019-12-07 19:18:39,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:18:39" (2/3) ... [2019-12-07 19:18:39,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e32e834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:18:39, skipping insertion in model container [2019-12-07 19:18:39,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:18:39" (3/3) ... [2019-12-07 19:18:39,715 INFO L109 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-1.c [2019-12-07 19:18:39,721 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 19:18:39,726 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-12-07 19:18:39,733 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-07 19:18:39,747 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 19:18:39,747 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 19:18:39,747 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 19:18:39,747 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 19:18:39,748 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 19:18:39,748 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 19:18:39,748 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 19:18:39,748 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 19:18:39,758 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-07 19:18:39,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 19:18:39,761 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:18:39,762 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:18:39,762 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:18:39,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:18:39,765 INFO L82 PathProgramCache]: Analyzing trace with hash -990866882, now seen corresponding path program 1 times [2019-12-07 19:18:39,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:18:39,771 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085070063] [2019-12-07 19:18:39,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:18:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 19:18:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 19:18:39,858 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 19:18:39,858 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 19:18:39,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 07:18:39 BoogieIcfgContainer [2019-12-07 19:18:39,878 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 19:18:39,879 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 19:18:39,879 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 19:18:39,879 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 19:18:39,879 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:18:39" (3/4) ... [2019-12-07 19:18:39,880 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 19:18:39,918 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_513884ed-434b-41be-b385-64a0251002bd/bin/utaipan/witness.graphml [2019-12-07 19:18:39,918 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 19:18:39,920 INFO L168 Benchmark]: Toolchain (without parser) took 919.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 944.7 MB in the beginning and 1.0 GB in the end (delta: -103.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. [2019-12-07 19:18:39,920 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 19:18:39,921 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -182.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-12-07 19:18:39,921 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.18 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 19:18:39,921 INFO L168 Benchmark]: Boogie Preprocessor took 19.63 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. [2019-12-07 19:18:39,921 INFO L168 Benchmark]: RCFGBuilder took 418.09 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: 50.6 MB). Peak memory consumption was 50.6 MB. Max. memory is 11.5 GB. [2019-12-07 19:18:39,922 INFO L168 Benchmark]: TraceAbstraction took 167.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-12-07 19:18:39,922 INFO L168 Benchmark]: Witness Printer took 39.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 19:18:39,923 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 241.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -182.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.18 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 418.09 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: 50.6 MB). Peak memory consumption was 50.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 167.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Witness Printer took 39.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. 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 ; [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 [L304] int kernel_st ; [L305] int tmp ; [L309] kernel_st = 0 [L196] COND TRUE (int )p_dw_i == 1 [L197] p_dw_st = 0 [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 [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 [L211] int __retres1 ; [L214] COND TRUE (int )p_dw_st == 0 [L215] __retres1 = 1 [L227] return (__retres1); [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, 46 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=46occurred 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, 7 NumberOfCodeBlocks, 7 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...