./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_aacff0d9-56bd-47b1-af99-43e953462688/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_aacff0d9-56bd-47b1-af99-43e953462688/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_aacff0d9-56bd-47b1-af99-43e953462688/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_aacff0d9-56bd-47b1-af99-43e953462688/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i -s /tmp/vcloud-vcloud-master/worker/working_dir_aacff0d9-56bd-47b1-af99-43e953462688/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_aacff0d9-56bd-47b1-af99-43e953462688/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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 11:22:40,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:22:40,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:22:40,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:22:40,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:22:40,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:22:40,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:22:40,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:22:40,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:22:40,106 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:22:40,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:22:40,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:22:40,114 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:22:40,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:22:40,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:22:40,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:22:40,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:22:40,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:22:40,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:22:40,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:22:40,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:22:40,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:22:40,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:22:40,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:22:40,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:22:40,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:22:40,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:22:40,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:22:40,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:22:40,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:22:40,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:22:40,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:22:40,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:22:40,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:22:40,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:22:40,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:22:40,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:22:40,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:22:40,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:22:40,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:22:40,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:22:40,144 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_aacff0d9-56bd-47b1-af99-43e953462688/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:22:40,156 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:22:40,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:22:40,166 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:22:40,166 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:22:40,167 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:22:40,167 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:22:40,167 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:22:40,167 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:22:40,167 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:22:40,168 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:22:40,168 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:22:40,168 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:22:40,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:22:40,169 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:22:40,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:22:40,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:22:40,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:22:40,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:22:40,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:22:40,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:22:40,170 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:22:40,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:22:40,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:22:40,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:22:40,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:22:40,171 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:22:40,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:22:40,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:22:40,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:22:40,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:22:40,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:22:40,172 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:22:40,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:22:40,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:22:40,173 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:22:40,173 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_aacff0d9-56bd-47b1-af99-43e953462688/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 621a7682bed2f65e2eb833b3fdeb3d2d81029067 [2019-10-22 11:22:40,204 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:22:40,214 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:22:40,217 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:22:40,218 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:22:40,219 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:22:40,219 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_aacff0d9-56bd-47b1-af99-43e953462688/bin/utaipan/../../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i [2019-10-22 11:22:40,280 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_aacff0d9-56bd-47b1-af99-43e953462688/bin/utaipan/data/637457622/fa155137534146f9a2bdc15a9ab93a79/FLAG21ad6df73 [2019-10-22 11:22:40,744 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:22:40,745 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_aacff0d9-56bd-47b1-af99-43e953462688/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i [2019-10-22 11:22:40,756 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_aacff0d9-56bd-47b1-af99-43e953462688/bin/utaipan/data/637457622/fa155137534146f9a2bdc15a9ab93a79/FLAG21ad6df73 [2019-10-22 11:22:41,049 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_aacff0d9-56bd-47b1-af99-43e953462688/bin/utaipan/data/637457622/fa155137534146f9a2bdc15a9ab93a79 [2019-10-22 11:22:41,051 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:22:41,052 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:22:41,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:22:41,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:22:41,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:22:41,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:22:41" (1/1) ... [2019-10-22 11:22:41,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c25380b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:41, skipping insertion in model container [2019-10-22 11:22:41,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:22:41" (1/1) ... [2019-10-22 11:22:41,066 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:22:41,106 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:22:41,308 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2019-10-22 11:22:41,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:22:41,556 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:22:41,577 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2019-10-22 11:22:41,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:22:41,688 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:22:41,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:41 WrapperNode [2019-10-22 11:22:41,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:22:41,690 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:22:41,690 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:22:41,690 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:22:41,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:41" (1/1) ... [2019-10-22 11:22:41,714 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:41" (1/1) ... [2019-10-22 11:22:41,740 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:22:41,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:22:41,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:22:41,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:22:41,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:41" (1/1) ... [2019-10-22 11:22:41,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:41" (1/1) ... [2019-10-22 11:22:41,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:41" (1/1) ... [2019-10-22 11:22:41,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:41" (1/1) ... [2019-10-22 11:22:41,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:41" (1/1) ... [2019-10-22 11:22:41,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:41" (1/1) ... [2019-10-22 11:22:41,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:41" (1/1) ... [2019-10-22 11:22:41,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:22:41,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:22:41,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:22:41,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:22:41,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aacff0d9-56bd-47b1-af99-43e953462688/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:22:41,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:22:41,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:22:41,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 11:22:41,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:22:41,827 INFO L130 BoogieDeclarations]: Found specification of procedure reader_nowait_fn [2019-10-22 11:22:41,827 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_nowait_fn [2019-10-22 11:22:41,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:22:41,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:22:41,829 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 11:22:42,178 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:22:42,178 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-10-22 11:22:42,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:42 BoogieIcfgContainer [2019-10-22 11:22:42,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:22:42,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:22:42,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:22:42,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:22:42,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:22:41" (1/3) ... [2019-10-22 11:22:42,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66dc933a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:22:42, skipping insertion in model container [2019-10-22 11:22:42,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:41" (2/3) ... [2019-10-22 11:22:42,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66dc933a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:22:42, skipping insertion in model container [2019-10-22 11:22:42,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:42" (3/3) ... [2019-10-22 11:22:42,191 INFO L109 eAbstractionObserver]: Analyzing ICFG ring_1w1r-1.i [2019-10-22 11:22:42,226 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,226 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,226 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,226 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,226 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,227 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,227 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~r~2.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,227 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~r~2.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,227 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,227 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~last~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,227 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,228 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,228 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,228 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~last~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,228 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~last~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,229 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~r~2.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,229 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~r~2.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,229 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,229 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,229 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~r~2.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,230 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~r~2.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,230 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,230 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,230 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,230 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,230 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,231 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,231 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,231 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,231 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,231 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,231 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,231 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,232 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,232 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,232 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,232 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,233 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,233 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,233 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,233 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,233 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,233 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,233 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,234 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,234 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,234 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,234 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,234 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,234 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,235 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,235 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,235 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,235 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,235 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,235 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,235 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,236 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,236 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,236 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,236 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,236 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,237 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,237 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,237 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,237 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,238 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,238 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,238 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,238 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~ret19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,238 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,239 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,239 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,239 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~ret19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,239 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~ret19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,239 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,240 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~ret19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,240 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,240 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,240 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,240 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,240 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,241 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~ret17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,241 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~ret17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,241 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~ret17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,241 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,241 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~ret17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,242 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,242 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~last~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,242 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,242 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~last~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,242 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,242 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~last~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,243 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,243 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~pre18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,243 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,243 WARN L315 ript$VariableManager]: TermVariabe Thread0_reader_nowait_fn_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,243 WARN L315 ript$VariableManager]: TermVariabe |Thread0_reader_nowait_fn_#t~pre18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:42,252 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-10-22 11:22:42,252 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:22:42,263 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-10-22 11:22:42,273 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-10-22 11:22:42,291 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:22:42,291 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:22:42,292 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:22:42,292 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:22:42,292 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:22:42,292 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:22:42,292 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:22:42,292 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:22:42,303 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 104 places, 111 transitions [2019-10-22 11:22:42,379 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1671 states. [2019-10-22 11:22:42,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states. [2019-10-22 11:22:42,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 11:22:42,389 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:42,390 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 11:22:42,392 INFO L410 AbstractCegarLoop]: === Iteration 1 === [reader_nowait_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:42,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:42,397 INFO L82 PathProgramCache]: Analyzing trace with hash 815350375, now seen corresponding path program 1 times [2019-10-22 11:22:42,405 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:42,405 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119922264] [2019-10-22 11:22:42,406 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:42,406 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:42,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:42,564 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 11:22:42,565 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119922264] [2019-10-22 11:22:42,566 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:42,566 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:22:42,567 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956882806] [2019-10-22 11:22:42,571 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:22:42,573 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:42,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:22:42,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:22:42,591 INFO L87 Difference]: Start difference. First operand 1671 states. Second operand 2 states. [2019-10-22 11:22:42,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:42,654 INFO L93 Difference]: Finished difference Result 1671 states and 3371 transitions. [2019-10-22 11:22:42,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:22:42,656 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2019-10-22 11:22:42,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:42,684 INFO L225 Difference]: With dead ends: 1671 [2019-10-22 11:22:42,684 INFO L226 Difference]: Without dead ends: 1531 [2019-10-22 11:22:42,686 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 11:22:42,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2019-10-22 11:22:42,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1531. [2019-10-22 11:22:42,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1531 states. [2019-10-22 11:22:42,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 3095 transitions. [2019-10-22 11:22:42,796 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 3095 transitions. Word has length 21 [2019-10-22 11:22:42,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:42,797 INFO L462 AbstractCegarLoop]: Abstraction has 1531 states and 3095 transitions. [2019-10-22 11:22:42,797 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:22:42,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 3095 transitions. [2019-10-22 11:22:42,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 11:22:42,798 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:42,798 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 11:22:42,798 INFO L410 AbstractCegarLoop]: === Iteration 2 === [reader_nowait_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:42,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:42,799 INFO L82 PathProgramCache]: Analyzing trace with hash 815351336, now seen corresponding path program 1 times [2019-10-22 11:22:42,799 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:42,799 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138023496] [2019-10-22 11:22:42,799 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:42,799 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:42,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:42,870 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 11:22:42,871 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138023496] [2019-10-22 11:22:42,871 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:42,871 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:22:42,871 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530121071] [2019-10-22 11:22:42,878 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:22:42,879 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:42,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:22:42,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:22:42,879 INFO L87 Difference]: Start difference. First operand 1531 states and 3095 transitions. Second operand 3 states. [2019-10-22 11:22:42,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:42,915 INFO L93 Difference]: Finished difference Result 2323 states and 4703 transitions. [2019-10-22 11:22:42,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:22:42,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2019-10-22 11:22:42,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:42,924 INFO L225 Difference]: With dead ends: 2323 [2019-10-22 11:22:42,924 INFO L226 Difference]: Without dead ends: 2323 [2019-10-22 11:22:42,925 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 11:22:42,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2323 states. [2019-10-22 11:22:42,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2323 to 1564. [2019-10-22 11:22:42,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2019-10-22 11:22:42,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 3162 transitions. [2019-10-22 11:22:42,969 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 3162 transitions. Word has length 21 [2019-10-22 11:22:42,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:42,970 INFO L462 AbstractCegarLoop]: Abstraction has 1564 states and 3162 transitions. [2019-10-22 11:22:42,970 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:22:42,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 3162 transitions. [2019-10-22 11:22:42,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 11:22:42,973 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:42,973 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 11:22:42,974 INFO L410 AbstractCegarLoop]: === Iteration 3 === [reader_nowait_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_nowait_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:42,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:42,974 INFO L82 PathProgramCache]: Analyzing trace with hash 2139009475, now seen corresponding path program 1 times [2019-10-22 11:22:42,974 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:42,974 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320607619] [2019-10-22 11:22:42,974 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:42,975 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:42,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:22:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:22:43,099 INFO L168 tionRefinementEngine]: Strategy TAIPAN found a feasible trace [2019-10-22 11:22:43,100 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:22:43,140 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-10-22 11:22:43,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:22:43 BasicIcfg [2019-10-22 11:22:43,141 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:22:43,142 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:22:43,142 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:22:43,142 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:22:43,143 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:42" (3/4) ... [2019-10-22 11:22:43,145 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:22:43,202 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_aacff0d9-56bd-47b1-af99-43e953462688/bin/utaipan/witness.graphml [2019-10-22 11:22:43,203 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:22:43,205 INFO L168 Benchmark]: Toolchain (without parser) took 2152.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 944.7 MB in the beginning and 965.2 MB in the end (delta: -20.6 MB). Peak memory consumption was 125.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:43,205 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:22:43,206 INFO L168 Benchmark]: CACSL2BoogieTranslator took 636.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -161.1 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:43,207 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.41 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 11:22:43,207 INFO L168 Benchmark]: Boogie Preprocessor took 35.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:43,208 INFO L168 Benchmark]: RCFGBuilder took 408.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:43,208 INFO L168 Benchmark]: TraceAbstraction took 956.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 970.6 MB in the end (delta: 96.6 MB). Peak memory consumption was 96.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:43,209 INFO L168 Benchmark]: Witness Printer took 61.00 ms. Allocated memory is still 1.2 GB. Free memory was 970.6 MB in the beginning and 965.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:43,212 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 636.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -161.1 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 50.41 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 35.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 408.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 956.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 970.6 MB in the end (delta: 96.6 MB). Peak memory consumption was 96.6 MB. Max. memory is 11.5 GB. * Witness Printer took 61.00 ms. Allocated memory is still 1.2 GB. Free memory was 970.6 MB in the beginning and 965.2 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...