./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0a92e327-b60d-42e7-8489-48caa0a9543e/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0a92e327-b60d-42e7-8489-48caa0a9543e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0a92e327-b60d-42e7-8489-48caa0a9543e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0a92e327-b60d-42e7-8489-48caa0a9543e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i -s /tmp/vcloud-vcloud-master/worker/working_dir_0a92e327-b60d-42e7-8489-48caa0a9543e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0a92e327-b60d-42e7-8489-48caa0a9543e/bin/uautomizer --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 Automizer --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 0.1.24-cad4683 [2019-10-22 08:59:28,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:59:28,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:59:28,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:59:28,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:59:28,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:59:28,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:59:28,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:59:28,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:59:28,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:59:28,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:59:28,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:59:28,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:59:28,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:59:28,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:59:28,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:59:28,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:59:28,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:59:28,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:59:28,026 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:59:28,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:59:28,027 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:59:28,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:59:28,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:59:28,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:59:28,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:59:28,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:59:28,032 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:59:28,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:59:28,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:59:28,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:59:28,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:59:28,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:59:28,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:59:28,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:59:28,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:59:28,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:59:28,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:59:28,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:59:28,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:59:28,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:59:28,038 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0a92e327-b60d-42e7-8489-48caa0a9543e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:59:28,048 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:59:28,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:59:28,049 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:59:28,049 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:59:28,050 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:59:28,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:59:28,050 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:59:28,050 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:59:28,050 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:59:28,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:59:28,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:59:28,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:59:28,051 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:59:28,051 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:59:28,051 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:59:28,051 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:59:28,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:59:28,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:59:28,052 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:59:28,052 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:59:28,052 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:59:28,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:59:28,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:59:28,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:59:28,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:59:28,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:59:28,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:59:28,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:59:28,054 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_0a92e327-b60d-42e7-8489-48caa0a9543e/bin/uautomizer 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 -> Automizer 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 [2019-10-22 08:59:28,078 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:59:28,088 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:59:28,091 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:59:28,092 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:59:28,093 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:59:28,093 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0a92e327-b60d-42e7-8489-48caa0a9543e/bin/uautomizer/../../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i [2019-10-22 08:59:28,138 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0a92e327-b60d-42e7-8489-48caa0a9543e/bin/uautomizer/data/7666deded/a848b326bd2f43a29d106309218ff2b4/FLAGfcedc4ec4 [2019-10-22 08:59:28,603 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:59:28,603 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0a92e327-b60d-42e7-8489-48caa0a9543e/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i [2019-10-22 08:59:28,614 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0a92e327-b60d-42e7-8489-48caa0a9543e/bin/uautomizer/data/7666deded/a848b326bd2f43a29d106309218ff2b4/FLAGfcedc4ec4 [2019-10-22 08:59:28,627 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0a92e327-b60d-42e7-8489-48caa0a9543e/bin/uautomizer/data/7666deded/a848b326bd2f43a29d106309218ff2b4 [2019-10-22 08:59:28,630 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:59:28,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:59:28,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:59:28,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:59:28,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:59:28,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:59:28" (1/1) ... [2019-10-22 08:59:28,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15242ddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:28, skipping insertion in model container [2019-10-22 08:59:28,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:59:28" (1/1) ... [2019-10-22 08:59:28,646 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:59:28,682 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:59:28,941 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2019-10-22 08:59:29,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:59:29,175 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:59:29,192 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2019-10-22 08:59:29,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:59:29,315 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:59:29,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:29 WrapperNode [2019-10-22 08:59:29,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:59:29,317 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:59:29,317 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:59:29,317 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:59:29,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:29" (1/1) ... [2019-10-22 08:59:29,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:29" (1/1) ... [2019-10-22 08:59:29,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:59:29,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:59:29,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:59:29,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:59:29,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:29" (1/1) ... [2019-10-22 08:59:29,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:29" (1/1) ... [2019-10-22 08:59:29,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:29" (1/1) ... [2019-10-22 08:59:29,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:29" (1/1) ... [2019-10-22 08:59:29,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:29" (1/1) ... [2019-10-22 08:59:29,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:29" (1/1) ... [2019-10-22 08:59:29,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:29" (1/1) ... [2019-10-22 08:59:29,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:59:29,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:59:29,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:59:29,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:59:29,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0a92e327-b60d-42e7-8489-48caa0a9543e/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:59:29,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:59:29,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:59:29,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 08:59:29,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:59:29,503 INFO L130 BoogieDeclarations]: Found specification of procedure reader_nowait_fn [2019-10-22 08:59:29,503 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_nowait_fn [2019-10-22 08:59:29,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:59:29,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:59:29,505 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-10-22 08:59:29,936 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:59:29,936 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-10-22 08:59:29,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:59:29 BoogieIcfgContainer [2019-10-22 08:59:29,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:59:29,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:59:29,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:59:29,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:59:29,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:59:28" (1/3) ... [2019-10-22 08:59:29,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546857a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:59:29, skipping insertion in model container [2019-10-22 08:59:29,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:29" (2/3) ... [2019-10-22 08:59:29,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546857a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:59:29, skipping insertion in model container [2019-10-22 08:59:29,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:59:29" (3/3) ... [2019-10-22 08:59:29,944 INFO L109 eAbstractionObserver]: Analyzing ICFG ring_1w1r-1.i [2019-10-22 08:59:29,976 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,976 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,976 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,977 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,977 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,977 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,977 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~r~2.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,977 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~r~2.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,977 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,978 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~last~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,978 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,978 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,978 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,978 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~last~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,979 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~last~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,979 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~r~2.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,979 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~r~2.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,979 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,979 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,979 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~r~2.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,980 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~r~2.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,980 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,980 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,980 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,980 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,980 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,980 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,981 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,981 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,981 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,981 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,981 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,981 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,981 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,982 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,982 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,982 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,982 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,982 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,982 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,982 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,983 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,983 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,983 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,983 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,983 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,983 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,983 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,984 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,984 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,984 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,984 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,984 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,984 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,985 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,985 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,985 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,985 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,985 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,985 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,985 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,986 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,986 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,986 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,986 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,986 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,986 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,987 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,987 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,987 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~ret19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,987 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,987 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,987 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,988 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~ret19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,988 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~ret19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,988 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,988 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~ret19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,988 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,988 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,989 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,989 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,989 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,989 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~ret17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,989 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~ret17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,989 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~ret17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,990 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,990 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~ret17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,990 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,990 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~last~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,990 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,990 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~last~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,991 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,991 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~last~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,991 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,991 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~pre18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,991 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,991 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:29,992 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~pre18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:59:30,000 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-10-22 08:59:30,000 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:59:30,007 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-10-22 08:59:30,017 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-10-22 08:59:30,035 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:59:30,035 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:59:30,035 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:59:30,035 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:59:30,035 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:59:30,035 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:59:30,035 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:59:30,036 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:59:30,046 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 104 places, 111 transitions [2019-10-22 08:59:30,148 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1671 states. [2019-10-22 08:59:30,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states. [2019-10-22 08:59:30,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 08:59:30,159 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:59:30,160 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:59:30,161 INFO L410 AbstractCegarLoop]: === Iteration 1 === [reader_nowait_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:59:30,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:30,165 INFO L82 PathProgramCache]: Analyzing trace with hash 815350375, now seen corresponding path program 1 times [2019-10-22 08:59:30,175 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:30,175 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544602998] [2019-10-22 08:59:30,175 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:30,175 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:30,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:30,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:30,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:30,307 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544602998] [2019-10-22 08:59:30,307 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:59:30,308 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:59:30,308 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636054081] [2019-10-22 08:59:30,312 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 08:59:30,312 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:59:30,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 08:59:30,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:59:30,325 INFO L87 Difference]: Start difference. First operand 1671 states. Second operand 2 states. [2019-10-22 08:59:30,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:59:30,370 INFO L93 Difference]: Finished difference Result 1671 states and 3371 transitions. [2019-10-22 08:59:30,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:59:30,371 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2019-10-22 08:59:30,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:59:30,394 INFO L225 Difference]: With dead ends: 1671 [2019-10-22 08:59:30,395 INFO L226 Difference]: Without dead ends: 1531 [2019-10-22 08:59:30,396 INFO L600 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 [2019-10-22 08:59:30,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2019-10-22 08:59:30,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1531. [2019-10-22 08:59:30,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1531 states. [2019-10-22 08:59:30,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 3095 transitions. [2019-10-22 08:59:30,516 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 3095 transitions. Word has length 21 [2019-10-22 08:59:30,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:59:30,517 INFO L462 AbstractCegarLoop]: Abstraction has 1531 states and 3095 transitions. [2019-10-22 08:59:30,517 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 08:59:30,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 3095 transitions. [2019-10-22 08:59:30,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 08:59:30,518 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:59:30,518 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:59:30,519 INFO L410 AbstractCegarLoop]: === Iteration 2 === [reader_nowait_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:59:30,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:30,519 INFO L82 PathProgramCache]: Analyzing trace with hash 815351336, now seen corresponding path program 1 times [2019-10-22 08:59:30,519 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:30,519 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517276582] [2019-10-22 08:59:30,520 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:30,520 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:30,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:30,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:30,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:30,603 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517276582] [2019-10-22 08:59:30,603 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:59:30,603 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:59:30,604 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570127717] [2019-10-22 08:59:30,605 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:59:30,605 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:59:30,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:59:30,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:59:30,606 INFO L87 Difference]: Start difference. First operand 1531 states and 3095 transitions. Second operand 3 states. [2019-10-22 08:59:30,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:59:30,638 INFO L93 Difference]: Finished difference Result 2323 states and 4703 transitions. [2019-10-22 08:59:30,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:59:30,638 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2019-10-22 08:59:30,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:59:30,646 INFO L225 Difference]: With dead ends: 2323 [2019-10-22 08:59:30,646 INFO L226 Difference]: Without dead ends: 2323 [2019-10-22 08:59:30,647 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:59:30,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2323 states. [2019-10-22 08:59:30,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2323 to 1564. [2019-10-22 08:59:30,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2019-10-22 08:59:30,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 3162 transitions. [2019-10-22 08:59:30,696 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 3162 transitions. Word has length 21 [2019-10-22 08:59:30,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:59:30,696 INFO L462 AbstractCegarLoop]: Abstraction has 1564 states and 3162 transitions. [2019-10-22 08:59:30,696 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:59:30,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 3162 transitions. [2019-10-22 08:59:30,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 08:59:30,699 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:59:30,699 INFO L380 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] [2019-10-22 08:59:30,699 INFO L410 AbstractCegarLoop]: === Iteration 3 === [reader_nowait_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:59:30,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:30,700 INFO L82 PathProgramCache]: Analyzing trace with hash 2139009475, now seen corresponding path program 1 times [2019-10-22 08:59:30,700 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:30,700 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408345842] [2019-10-22 08:59:30,703 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:30,703 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:30,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:30,827 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:30,827 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 08:59:30,862 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-10-22 08:59:30,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:59:30 BasicIcfg [2019-10-22 08:59:30,864 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:59:30,864 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:59:30,864 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:59:30,865 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:59:30,865 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:59:29" (3/4) ... [2019-10-22 08:59:30,867 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 08:59:30,924 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0a92e327-b60d-42e7-8489-48caa0a9543e/bin/uautomizer/witness.graphml [2019-10-22 08:59:30,924 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:59:30,927 INFO L168 Benchmark]: Toolchain (without parser) took 2294.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 945.9 MB in the beginning and 957.7 MB in the end (delta: -11.8 MB). Peak memory consumption was 125.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:30,927 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:59:30,928 INFO L168 Benchmark]: CACSL2BoogieTranslator took 684.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 945.9 MB in the beginning and 1.1 GB in the end (delta: -152.3 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:30,928 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.74 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:59:30,929 INFO L168 Benchmark]: Boogie Preprocessor took 49.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:30,929 INFO L168 Benchmark]: RCFGBuilder took 506.62 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. [2019-10-22 08:59:30,930 INFO L168 Benchmark]: TraceAbstraction took 925.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 963.0 MB in the end (delta: 96.6 MB). Peak memory consumption was 96.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:30,930 INFO L168 Benchmark]: Witness Printer took 60.14 ms. Allocated memory is still 1.2 GB. Free memory was 963.0 MB in the beginning and 957.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:30,933 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 684.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 945.9 MB in the beginning and 1.1 GB in the end (delta: -152.3 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 63.74 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. * Boogie Preprocessor took 49.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 506.62 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 925.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 963.0 MB in the end (delta: 96.6 MB). Peak memory consumption was 96.6 MB. Max. memory is 11.5 GB. * Witness Printer took 60.14 ms. Allocated memory is still 1.2 GB. Free memory was 963.0 MB in the beginning and 957.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 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] 0 pthread_t reader; [L854] 0 Ring r; [L812] EXPR 0 r->writer = 0 [L812] 0 r->reader = r->writer = 0 [L856] FCALL, FORK 0 pthread_create( &reader, ((void *)0), &reader_nowait_fn, &r ) [L840] 1 Ring *r = arg; [L841] 1 long val = 0, last = 0, i = 0; [L842] COND TRUE 1 i < 8 [L804] EXPR 1 r->reader [L804] EXPR 1 r->q[ r->reader ] [L804] 1 long x = r->q[ r->reader ]; [L805] EXPR 1 r->reader [L805] 1 r->reader = (r->reader + 1) % 4 [L806] 1 return x; [L843] 1 val = ring_dequeue( r ) [L844] 1 !(val == last + 1) ? __VERIFIER_error() : (void)0 [L844] 1 __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 154 locations, 6 error locations. Result: UNSAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, 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 DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 759 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 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, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...