./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_01f900e4-b355-4a8b-8758-550d7726b3e9/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_01f900e4-b355-4a8b-8758-550d7726b3e9/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_01f900e4-b355-4a8b-8758-550d7726b3e9/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_01f900e4-b355-4a8b-8758-550d7726b3e9/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_01f900e4-b355-4a8b-8758-550d7726b3e9/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_01f900e4-b355-4a8b-8758-550d7726b3e9/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 [2018-12-09 15:35:57,729 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 15:35:57,730 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 15:35:57,736 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 15:35:57,736 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 15:35:57,736 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 15:35:57,737 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 15:35:57,738 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 15:35:57,739 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 15:35:57,739 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 15:35:57,739 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 15:35:57,739 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 15:35:57,740 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 15:35:57,740 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 15:35:57,741 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 15:35:57,741 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 15:35:57,742 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 15:35:57,742 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 15:35:57,743 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 15:35:57,744 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 15:35:57,744 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 15:35:57,745 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 15:35:57,746 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 15:35:57,746 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 15:35:57,746 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 15:35:57,747 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 15:35:57,747 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 15:35:57,748 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 15:35:57,748 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 15:35:57,748 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 15:35:57,749 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 15:35:57,749 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 15:35:57,749 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 15:35:57,749 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 15:35:57,750 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 15:35:57,750 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 15:35:57,750 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_01f900e4-b355-4a8b-8758-550d7726b3e9/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 15:35:57,757 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 15:35:57,757 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 15:35:57,758 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 15:35:57,758 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 15:35:57,758 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 15:35:57,758 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 15:35:57,758 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 15:35:57,758 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 15:35:57,758 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 15:35:57,758 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 15:35:57,758 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 15:35:57,759 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 15:35:57,759 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 15:35:57,759 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 15:35:57,759 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 15:35:57,759 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 15:35:57,759 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 15:35:57,759 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 15:35:57,759 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 15:35:57,759 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 15:35:57,759 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 15:35:57,760 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 15:35:57,760 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 15:35:57,760 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 15:35:57,760 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 15:35:57,760 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 15:35:57,760 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 15:35:57,760 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 15:35:57,760 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 15:35:57,760 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 15:35:57,760 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 15:35:57,760 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 15:35:57,760 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 15:35:57,761 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 15:35:57,761 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 15:35:57,761 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 15:35:57,761 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_01f900e4-b355-4a8b-8758-550d7726b3e9/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 [2018-12-09 15:35:57,779 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 15:35:57,788 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 15:35:57,791 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 15:35:57,792 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 15:35:57,792 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 15:35:57,793 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_01f900e4-b355-4a8b-8758-550d7726b3e9/bin-2019/utaipan/../../sv-benchmarks/c/pthread-divine/ring_1w1r_false-unreach-call.i [2018-12-09 15:35:57,838 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_01f900e4-b355-4a8b-8758-550d7726b3e9/bin-2019/utaipan/data/d6724392b/c6a15bf66a334787a7c990086dde467e/FLAG5b443a5b1 [2018-12-09 15:35:58,299 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 15:35:58,299 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_01f900e4-b355-4a8b-8758-550d7726b3e9/sv-benchmarks/c/pthread-divine/ring_1w1r_false-unreach-call.i [2018-12-09 15:35:58,307 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_01f900e4-b355-4a8b-8758-550d7726b3e9/bin-2019/utaipan/data/d6724392b/c6a15bf66a334787a7c990086dde467e/FLAG5b443a5b1 [2018-12-09 15:35:58,316 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_01f900e4-b355-4a8b-8758-550d7726b3e9/bin-2019/utaipan/data/d6724392b/c6a15bf66a334787a7c990086dde467e [2018-12-09 15:35:58,317 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 15:35:58,318 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 15:35:58,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 15:35:58,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 15:35:58,321 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 15:35:58,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:35:58" (1/1) ... [2018-12-09 15:35:58,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cdc5e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:35:58, skipping insertion in model container [2018-12-09 15:35:58,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:35:58" (1/1) ... [2018-12-09 15:35:58,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 15:35:58,349 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 15:35:58,440 WARN L613 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2018-12-09 15:35:58,559 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 15:35:58,606 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 15:35:58,616 WARN L613 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2018-12-09 15:35:58,635 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 15:35:58,676 INFO L195 MainTranslator]: Completed translation [2018-12-09 15:35:58,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:35:58 WrapperNode [2018-12-09 15:35:58,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 15:35:58,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 15:35:58,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 15:35:58,677 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 15:35:58,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:35:58" (1/1) ... [2018-12-09 15:35:58,695 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:35:58" (1/1) ... [2018-12-09 15:35:58,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 15:35:58,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 15:35:58,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 15:35:58,714 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 15:35:58,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:35:58" (1/1) ... [2018-12-09 15:35:58,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:35:58" (1/1) ... [2018-12-09 15:35:58,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:35:58" (1/1) ... [2018-12-09 15:35:58,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:35:58" (1/1) ... [2018-12-09 15:35:58,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:35:58" (1/1) ... [2018-12-09 15:35:58,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:35:58" (1/1) ... [2018-12-09 15:35:58,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:35:58" (1/1) ... [2018-12-09 15:35:58,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 15:35:58,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 15:35:58,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 15:35:58,734 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 15:35:58,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:35:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_01f900e4-b355-4a8b-8758-550d7726b3e9/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 [2018-12-09 15:35:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 15:35:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 15:35:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 15:35:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 15:35:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure reader_nowait_fn [2018-12-09 15:35:58,766 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_nowait_fn [2018-12-09 15:35:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 15:35:58,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 15:35:58,767 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-09 15:35:58,978 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 15:35:58,978 INFO L280 CfgBuilder]: Removed 17 assue(true) statements. [2018-12-09 15:35:58,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:35:58 BoogieIcfgContainer [2018-12-09 15:35:58,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 15:35:58,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 15:35:58,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 15:35:58,981 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 15:35:58,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:35:58" (1/3) ... [2018-12-09 15:35:58,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26bb1a9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:35:58, skipping insertion in model container [2018-12-09 15:35:58,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:35:58" (2/3) ... [2018-12-09 15:35:58,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26bb1a9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:35:58, skipping insertion in model container [2018-12-09 15:35:58,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:35:58" (3/3) ... [2018-12-09 15:35:58,983 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_1w1r_false-unreach-call.i [2018-12-09 15:35:59,005 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,005 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,005 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,005 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,005 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,005 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,006 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~r~2.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,006 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~r~2.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,006 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,006 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~last~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,006 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,006 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,006 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,007 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~last~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,007 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~last~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,007 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~r~2.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,007 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~r~2.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,007 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,007 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,007 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~r~2.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,008 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~r~2.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,008 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,008 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,008 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,008 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,008 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,008 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,009 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,009 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,009 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,009 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,009 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,009 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,009 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,009 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,009 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,010 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,010 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,010 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,010 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,010 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,010 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,010 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,010 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,011 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,011 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,011 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,011 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,011 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,011 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,011 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,012 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,012 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,012 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,012 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,012 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,012 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,012 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,012 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,013 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,013 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,013 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,013 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,013 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,013 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,013 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,014 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,014 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,014 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,014 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~ret19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,014 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,014 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,014 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,014 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~ret19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,015 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~ret19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,015 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,015 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~ret19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,015 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,015 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,015 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,015 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,016 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,016 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~ret17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,016 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~ret17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,016 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~ret17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,016 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,016 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~ret17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,016 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,017 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~last~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,017 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,017 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~last~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,017 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,017 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~last~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,017 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,017 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~pre18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,018 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,018 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,018 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~pre18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 15:35:59,023 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-09 15:35:59,024 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 15:35:59,029 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-12-09 15:35:59,039 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-12-09 15:35:59,054 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 15:35:59,054 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 15:35:59,054 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 15:35:59,054 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 15:35:59,054 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 15:35:59,054 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 15:35:59,054 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 15:35:59,054 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 15:35:59,060 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 104places, 111 transitions [2018-12-09 15:35:59,095 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1671 states. [2018-12-09 15:35:59,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states. [2018-12-09 15:35:59,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-09 15:35:59,102 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:35:59,103 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] [2018-12-09 15:35:59,104 INFO L423 AbstractCegarLoop]: === Iteration 1 === [reader_nowait_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 15:35:59,107 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:35:59,107 INFO L82 PathProgramCache]: Analyzing trace with hash 815350375, now seen corresponding path program 1 times [2018-12-09 15:35:59,109 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 15:35:59,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:35:59,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:35:59,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:35:59,144 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 15:35:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:35:59,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:35:59,198 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 15:35:59,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 15:35:59,198 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 15:35:59,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 15:35:59,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 15:35:59,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 15:35:59,211 INFO L87 Difference]: Start difference. First operand 1671 states. Second operand 2 states. [2018-12-09 15:35:59,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:35:59,237 INFO L93 Difference]: Finished difference Result 1671 states and 3371 transitions. [2018-12-09 15:35:59,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 15:35:59,238 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-12-09 15:35:59,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:35:59,252 INFO L225 Difference]: With dead ends: 1671 [2018-12-09 15:35:59,253 INFO L226 Difference]: Without dead ends: 1531 [2018-12-09 15:35:59,254 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 [2018-12-09 15:35:59,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2018-12-09 15:35:59,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1531. [2018-12-09 15:35:59,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1531 states. [2018-12-09 15:35:59,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 3095 transitions. [2018-12-09 15:35:59,308 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 3095 transitions. Word has length 21 [2018-12-09 15:35:59,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:35:59,309 INFO L480 AbstractCegarLoop]: Abstraction has 1531 states and 3095 transitions. [2018-12-09 15:35:59,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 15:35:59,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 3095 transitions. [2018-12-09 15:35:59,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-09 15:35:59,310 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:35:59,310 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] [2018-12-09 15:35:59,310 INFO L423 AbstractCegarLoop]: === Iteration 2 === [reader_nowait_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 15:35:59,310 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:35:59,310 INFO L82 PathProgramCache]: Analyzing trace with hash 815351336, now seen corresponding path program 1 times [2018-12-09 15:35:59,310 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 15:35:59,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:35:59,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:35:59,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:35:59,314 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 15:35:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:35:59,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:35:59,347 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 15:35:59,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 15:35:59,347 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 15:35:59,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 15:35:59,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 15:35:59,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 15:35:59,349 INFO L87 Difference]: Start difference. First operand 1531 states and 3095 transitions. Second operand 3 states. [2018-12-09 15:35:59,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:35:59,386 INFO L93 Difference]: Finished difference Result 2323 states and 4703 transitions. [2018-12-09 15:35:59,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 15:35:59,386 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-12-09 15:35:59,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:35:59,394 INFO L225 Difference]: With dead ends: 2323 [2018-12-09 15:35:59,394 INFO L226 Difference]: Without dead ends: 2323 [2018-12-09 15:35:59,395 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 [2018-12-09 15:35:59,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2323 states. [2018-12-09 15:35:59,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2323 to 1564. [2018-12-09 15:35:59,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2018-12-09 15:35:59,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 3162 transitions. [2018-12-09 15:35:59,438 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 3162 transitions. Word has length 21 [2018-12-09 15:35:59,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:35:59,439 INFO L480 AbstractCegarLoop]: Abstraction has 1564 states and 3162 transitions. [2018-12-09 15:35:59,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 15:35:59,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 3162 transitions. [2018-12-09 15:35:59,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-09 15:35:59,442 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:35:59,442 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] [2018-12-09 15:35:59,442 INFO L423 AbstractCegarLoop]: === Iteration 3 === [reader_nowait_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 15:35:59,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:35:59,443 INFO L82 PathProgramCache]: Analyzing trace with hash 2139009475, now seen corresponding path program 1 times [2018-12-09 15:35:59,443 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 15:35:59,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:35:59,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:35:59,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:35:59,446 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 15:35:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 15:35:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 15:35:59,495 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 15:35:59,517 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-12-09 15:35:59,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:35:59 BasicIcfg [2018-12-09 15:35:59,518 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 15:35:59,518 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 15:35:59,518 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 15:35:59,519 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 15:35:59,519 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:35:58" (3/4) ... [2018-12-09 15:35:59,520 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 15:35:59,552 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_01f900e4-b355-4a8b-8758-550d7726b3e9/bin-2019/utaipan/witness.graphml [2018-12-09 15:35:59,552 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 15:35:59,553 INFO L168 Benchmark]: Toolchain (without parser) took 1235.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 948.1 MB in the beginning and 962.8 MB in the end (delta: -14.8 MB). Peak memory consumption was 123.7 MB. Max. memory is 11.5 GB. [2018-12-09 15:35:59,554 INFO L168 Benchmark]: CDTParser took 0.17 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. [2018-12-09 15:35:59,554 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -155.4 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. [2018-12-09 15:35:59,554 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.05 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. [2018-12-09 15:35:59,555 INFO L168 Benchmark]: Boogie Preprocessor took 19.66 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. [2018-12-09 15:35:59,555 INFO L168 Benchmark]: RCFGBuilder took 244.88 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: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. [2018-12-09 15:35:59,555 INFO L168 Benchmark]: TraceAbstraction took 538.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 969.9 MB in the end (delta: 97.0 MB). Peak memory consumption was 97.0 MB. Max. memory is 11.5 GB. [2018-12-09 15:35:59,555 INFO L168 Benchmark]: Witness Printer took 34.07 ms. Allocated memory is still 1.2 GB. Free memory was 969.9 MB in the beginning and 962.8 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2018-12-09 15:35:59,557 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 357.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -155.4 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 37.05 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 19.66 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 244.88 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: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 538.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 969.9 MB in the end (delta: 97.0 MB). Peak memory consumption was 97.0 MB. Max. memory is 11.5 GB. * Witness Printer took 34.07 ms. Allocated memory is still 1.2 GB. Free memory was 969.9 MB in the beginning and 962.8 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...