./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-divine/ring_1w1r_false-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c73ad6c7-a525-4587-ba41-05d1947c07c1/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c73ad6c7-a525-4587-ba41-05d1947c07c1/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c73ad6c7-a525-4587-ba41-05d1947c07c1/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c73ad6c7-a525-4587-ba41-05d1947c07c1/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_1w1r_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_c73ad6c7-a525-4587-ba41-05d1947c07c1/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c73ad6c7-a525-4587-ba41-05d1947c07c1/bin-2019/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 621a7682bed2f65e2eb833b3fdeb3d2d81029067 .................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.23-635dfa2 [2018-12-02 14:11:48,202 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 14:11:48,203 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 14:11:48,209 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 14:11:48,209 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 14:11:48,209 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 14:11:48,210 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 14:11:48,211 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 14:11:48,212 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 14:11:48,212 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 14:11:48,212 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 14:11:48,213 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 14:11:48,213 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 14:11:48,213 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 14:11:48,214 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 14:11:48,214 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 14:11:48,215 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 14:11:48,216 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 14:11:48,216 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 14:11:48,217 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 14:11:48,218 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 14:11:48,218 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 14:11:48,219 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 14:11:48,220 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 14:11:48,220 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 14:11:48,220 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 14:11:48,221 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 14:11:48,221 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 14:11:48,222 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 14:11:48,222 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 14:11:48,222 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 14:11:48,223 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 14:11:48,223 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 14:11:48,223 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 14:11:48,223 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 14:11:48,224 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 14:11:48,224 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c73ad6c7-a525-4587-ba41-05d1947c07c1/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-02 14:11:48,231 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 14:11:48,231 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 14:11:48,232 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 14:11:48,232 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 14:11:48,232 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 14:11:48,232 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 14:11:48,232 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 14:11:48,232 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 14:11:48,232 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 14:11:48,232 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 14:11:48,232 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 14:11:48,232 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 14:11:48,233 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 14:11:48,233 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 14:11:48,233 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 14:11:48,233 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 14:11:48,233 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 14:11:48,233 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 14:11:48,233 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 14:11:48,233 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 14:11:48,234 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 14:11:48,234 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 14:11:48,234 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 14:11:48,234 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 14:11:48,234 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 14:11:48,234 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 14:11:48,234 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 14:11:48,234 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 14:11:48,234 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 14:11:48,234 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 14:11:48,234 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 14:11:48,235 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 14:11:48,235 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 14:11:48,235 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 14:11:48,235 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 14:11:48,235 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-02 14:11:48,235 INFO L133 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_c73ad6c7-a525-4587-ba41-05d1947c07c1/bin-2019/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 -> 621a7682bed2f65e2eb833b3fdeb3d2d81029067 [2018-12-02 14:11:48,253 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 14:11:48,262 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 14:11:48,265 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 14:11:48,266 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 14:11:48,266 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 14:11:48,267 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c73ad6c7-a525-4587-ba41-05d1947c07c1/bin-2019/utaipan/../../sv-benchmarks/c/pthread-divine/ring_1w1r_false-unreach-call.i [2018-12-02 14:11:48,309 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c73ad6c7-a525-4587-ba41-05d1947c07c1/bin-2019/utaipan/data/50d6f2982/4c9cf38904154a40a1cf24b07adcd59c/FLAG11647576e [2018-12-02 14:11:48,636 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 14:11:48,637 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c73ad6c7-a525-4587-ba41-05d1947c07c1/sv-benchmarks/c/pthread-divine/ring_1w1r_false-unreach-call.i [2018-12-02 14:11:48,644 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c73ad6c7-a525-4587-ba41-05d1947c07c1/bin-2019/utaipan/data/50d6f2982/4c9cf38904154a40a1cf24b07adcd59c/FLAG11647576e [2018-12-02 14:11:48,652 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c73ad6c7-a525-4587-ba41-05d1947c07c1/bin-2019/utaipan/data/50d6f2982/4c9cf38904154a40a1cf24b07adcd59c [2018-12-02 14:11:48,655 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 14:11:48,655 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 14:11:48,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 14:11:48,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 14:11:48,658 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 14:11:48,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:11:48" (1/1) ... [2018-12-02 14:11:48,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@628262cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:48, skipping insertion in model container [2018-12-02 14:11:48,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:11:48" (1/1) ... [2018-12-02 14:11:48,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 14:11:48,686 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 14:11:48,780 WARN L613 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2018-12-02 14:11:48,892 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 14:11:48,933 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 14:11:48,946 WARN L613 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2018-12-02 14:11:48,965 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 14:11:49,005 INFO L195 MainTranslator]: Completed translation [2018-12-02 14:11:49,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:49 WrapperNode [2018-12-02 14:11:49,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 14:11:49,006 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 14:11:49,006 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 14:11:49,006 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 14:11:49,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:49" (1/1) ... [2018-12-02 14:11:49,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:49" (1/1) ... [2018-12-02 14:11:49,034 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 14:11:49,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 14:11:49,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 14:11:49,034 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 14:11:49,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:49" (1/1) ... [2018-12-02 14:11:49,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:49" (1/1) ... [2018-12-02 14:11:49,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:49" (1/1) ... [2018-12-02 14:11:49,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:49" (1/1) ... [2018-12-02 14:11:49,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:49" (1/1) ... [2018-12-02 14:11:49,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:49" (1/1) ... [2018-12-02 14:11:49,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:49" (1/1) ... [2018-12-02 14:11:49,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 14:11:49,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 14:11:49,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 14:11:49,052 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 14:11:49,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c73ad6c7-a525-4587-ba41-05d1947c07c1/bin-2019/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 [2018-12-02 14:11:49,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 14:11:49,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 14:11:49,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 14:11:49,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-02 14:11:49,083 INFO L130 BoogieDeclarations]: Found specification of procedure reader_nowait_fn [2018-12-02 14:11:49,083 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_nowait_fn [2018-12-02 14:11:49,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 14:11:49,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 14:11:49,084 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-02 14:11:49,277 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 14:11:49,278 INFO L280 CfgBuilder]: Removed 17 assue(true) statements. [2018-12-02 14:11:49,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:11:49 BoogieIcfgContainer [2018-12-02 14:11:49,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 14:11:49,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 14:11:49,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 14:11:49,280 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 14:11:49,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:11:48" (1/3) ... [2018-12-02 14:11:49,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e1721c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:11:49, skipping insertion in model container [2018-12-02 14:11:49,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:49" (2/3) ... [2018-12-02 14:11:49,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e1721c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:11:49, skipping insertion in model container [2018-12-02 14:11:49,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:11:49" (3/3) ... [2018-12-02 14:11:49,282 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_1w1r_false-unreach-call.i [2018-12-02 14:11:49,303 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,303 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,303 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,303 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,304 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,304 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,304 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~r~2.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,304 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~r~2.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,304 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,304 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~last~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,304 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,304 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,304 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,304 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~last~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,305 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~last~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,305 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~r~2.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,305 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~r~2.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,305 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,305 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,305 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~r~2.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,305 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~r~2.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,305 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,305 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,305 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,305 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,306 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,306 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,306 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,306 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,306 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,306 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,306 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,306 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,306 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,306 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,306 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,306 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,306 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,307 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,307 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,307 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,307 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,307 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,307 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,307 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,307 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,307 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,307 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,307 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,308 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,308 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,308 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,308 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,308 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,308 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,308 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,308 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,308 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,308 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,308 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,308 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,309 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,309 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,309 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,309 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,309 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,309 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,309 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,309 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,309 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~ret19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,309 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,309 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,309 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,310 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~ret19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,310 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~ret19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,310 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,310 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~ret19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,310 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,310 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,310 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,310 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,310 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,310 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~ret17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,311 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~ret17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,311 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~ret17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,311 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,311 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~ret17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,311 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,311 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~last~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,311 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,311 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~last~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,311 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,311 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~last~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,311 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,312 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~pre18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,312 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,312 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,312 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~pre18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:11:49,318 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-02 14:11:49,318 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 14:11:49,325 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-12-02 14:11:49,336 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-12-02 14:11:49,351 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 14:11:49,351 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 14:11:49,351 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 14:11:49,351 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 14:11:49,351 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 14:11:49,351 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 14:11:49,351 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 14:11:49,351 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 14:11:49,358 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 104places, 111 transitions [2018-12-02 14:11:49,400 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1671 states. [2018-12-02 14:11:49,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states. [2018-12-02 14:11:49,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-02 14:11:49,407 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:11:49,408 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 14:11:49,409 INFO L423 AbstractCegarLoop]: === Iteration 1 === [reader_nowait_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 14:11:49,412 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:11:49,413 INFO L82 PathProgramCache]: Analyzing trace with hash 815350375, now seen corresponding path program 1 times [2018-12-02 14:11:49,414 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 14:11:49,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:11:49,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:11:49,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:11:49,449 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 14:11:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:11:49,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:11:49,500 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 14:11:49,500 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 14:11:49,500 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 14:11:49,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 14:11:49,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 14:11:49,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 14:11:49,513 INFO L87 Difference]: Start difference. First operand 1671 states. Second operand 2 states. [2018-12-02 14:11:49,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:11:49,539 INFO L93 Difference]: Finished difference Result 1671 states and 3371 transitions. [2018-12-02 14:11:49,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 14:11:49,540 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-12-02 14:11:49,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:11:49,553 INFO L225 Difference]: With dead ends: 1671 [2018-12-02 14:11:49,553 INFO L226 Difference]: Without dead ends: 1531 [2018-12-02 14:11:49,554 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 14:11:49,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2018-12-02 14:11:49,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1531. [2018-12-02 14:11:49,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1531 states. [2018-12-02 14:11:49,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 3095 transitions. [2018-12-02 14:11:49,611 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 3095 transitions. Word has length 21 [2018-12-02 14:11:49,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:11:49,611 INFO L480 AbstractCegarLoop]: Abstraction has 1531 states and 3095 transitions. [2018-12-02 14:11:49,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 14:11:49,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 3095 transitions. [2018-12-02 14:11:49,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-02 14:11:49,612 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:11:49,612 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 14:11:49,612 INFO L423 AbstractCegarLoop]: === Iteration 2 === [reader_nowait_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 14:11:49,612 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:11:49,612 INFO L82 PathProgramCache]: Analyzing trace with hash 815351336, now seen corresponding path program 1 times [2018-12-02 14:11:49,612 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 14:11:49,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:11:49,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:11:49,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:11:49,615 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 14:11:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:11:49,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:11:49,650 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 14:11:49,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 14:11:49,650 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 14:11:49,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 14:11:49,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 14:11:49,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 14:11:49,651 INFO L87 Difference]: Start difference. First operand 1531 states and 3095 transitions. Second operand 3 states. [2018-12-02 14:11:49,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:11:49,674 INFO L93 Difference]: Finished difference Result 2323 states and 4703 transitions. [2018-12-02 14:11:49,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 14:11:49,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-12-02 14:11:49,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:11:49,679 INFO L225 Difference]: With dead ends: 2323 [2018-12-02 14:11:49,679 INFO L226 Difference]: Without dead ends: 2323 [2018-12-02 14:11:49,680 INFO L631 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 [2018-12-02 14:11:49,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2323 states. [2018-12-02 14:11:49,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2323 to 1564. [2018-12-02 14:11:49,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2018-12-02 14:11:49,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 3162 transitions. [2018-12-02 14:11:49,708 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 3162 transitions. Word has length 21 [2018-12-02 14:11:49,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:11:49,709 INFO L480 AbstractCegarLoop]: Abstraction has 1564 states and 3162 transitions. [2018-12-02 14:11:49,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 14:11:49,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 3162 transitions. [2018-12-02 14:11:49,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-02 14:11:49,711 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:11:49,711 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 14:11:49,712 INFO L423 AbstractCegarLoop]: === Iteration 3 === [reader_nowait_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 14:11:49,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:11:49,712 INFO L82 PathProgramCache]: Analyzing trace with hash 2139009475, now seen corresponding path program 1 times [2018-12-02 14:11:49,712 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 14:11:49,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:11:49,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:11:49,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:11:49,715 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 14:11:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 14:11:49,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 14:11:49,766 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 14:11:49,789 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-12-02 14:11:49,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:11:49 BasicIcfg [2018-12-02 14:11:49,790 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 14:11:49,791 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 14:11:49,791 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 14:11:49,791 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 14:11:49,791 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:11:49" (3/4) ... [2018-12-02 14:11:49,793 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-02 14:11:49,824 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c73ad6c7-a525-4587-ba41-05d1947c07c1/bin-2019/utaipan/witness.graphml [2018-12-02 14:11:49,825 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 14:11:49,825 INFO L168 Benchmark]: Toolchain (without parser) took 1170.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 947.0 MB in the beginning and 965.6 MB in the end (delta: -18.6 MB). Peak memory consumption was 120.4 MB. Max. memory is 11.5 GB. [2018-12-02 14:11:49,826 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 14:11:49,826 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -157.1 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. [2018-12-02 14:11:49,827 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.26 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: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-12-02 14:11:49,827 INFO L168 Benchmark]: Boogie Preprocessor took 17.19 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. [2018-12-02 14:11:49,828 INFO L168 Benchmark]: RCFGBuilder took 226.70 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: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 11.5 GB. [2018-12-02 14:11:49,828 INFO L168 Benchmark]: TraceAbstraction took 512.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 972.7 MB in the end (delta: 94.9 MB). Peak memory consumption was 94.9 MB. Max. memory is 11.5 GB. [2018-12-02 14:11:49,828 INFO L168 Benchmark]: Witness Printer took 33.93 ms. Allocated memory is still 1.2 GB. Free memory was 972.7 MB in the beginning and 965.6 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2018-12-02 14:11:49,830 INFO L336 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 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 349.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -157.1 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.26 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: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.19 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 226.70 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: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 512.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 972.7 MB in the end (delta: 94.9 MB). Peak memory consumption was 94.9 MB. Max. memory is 11.5 GB. * Witness Printer took 33.93 ms. Allocated memory is still 1.2 GB. Free memory was 972.7 MB in the beginning and 965.6 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 844]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L853] -1 pthread_t reader; [L854] -1 Ring r; [L812] EXPR -1 r->writer = 0 [L812] -1 r->reader = r->writer = 0 [L856] FCALL, FORK -1 pthread_create( &reader, ((void *)0), &reader_nowait_fn, &r ) [L840] 0 Ring *r = arg; [L841] 0 long val = 0, last = 0, i = 0; [L842] COND TRUE 0 i < 8 [L804] EXPR 0 r->reader [L804] EXPR 0 r->q[ r->reader ] [L804] 0 long x = r->q[ r->reader ]; [L805] EXPR 0 r->reader [L805] 0 r->reader = (r->reader + 1) % 4 [L806] 0 return x; [L843] 0 val = ring_dequeue( r ) [L844] 0 !(val == last + 1) ? __VERIFIER_error() : (void)0 [L844] 0 __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 154 locations, 6 error locations. UNSAFE Result, 0.4s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 229 SDtfs, 57 SDslu, 88 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1671occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 759 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 840 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...