./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/34_double_lock_p2_vs_true-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ff49610c-1fb4-4764-a609-4a77412846c6/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ff49610c-1fb4-4764-a609-4a77412846c6/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ff49610c-1fb4-4764-a609-4a77412846c6/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ff49610c-1fb4-4764-a609-4a77412846c6/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/34_double_lock_p2_vs_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_ff49610c-1fb4-4764-a609-4a77412846c6/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ff49610c-1fb4-4764-a609-4a77412846c6/bin-2019/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 0527820ce7f25e6a965a8fdfcd5a0cfce4fa7f41 .................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ff49610c-1fb4-4764-a609-4a77412846c6/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ff49610c-1fb4-4764-a609-4a77412846c6/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ff49610c-1fb4-4764-a609-4a77412846c6/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ff49610c-1fb4-4764-a609-4a77412846c6/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/34_double_lock_p2_vs_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_ff49610c-1fb4-4764-a609-4a77412846c6/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ff49610c-1fb4-4764-a609-4a77412846c6/bin-2019/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 0527820ce7f25e6a965a8fdfcd5a0cfce4fa7f41 ............................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: IllegalStateException: Petrification does not provide enough thread instances for Thread0_thr2 --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 09:50:59,575 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 09:50:59,576 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 09:50:59,584 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 09:50:59,584 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 09:50:59,585 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 09:50:59,586 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 09:50:59,587 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 09:50:59,588 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 09:50:59,589 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 09:50:59,589 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 09:50:59,589 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 09:50:59,590 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 09:50:59,590 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 09:50:59,591 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 09:50:59,592 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 09:50:59,592 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 09:50:59,593 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 09:50:59,594 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 09:50:59,595 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 09:50:59,596 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 09:50:59,597 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 09:50:59,598 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 09:50:59,598 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 09:50:59,598 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 09:50:59,599 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 09:50:59,600 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 09:50:59,600 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 09:50:59,601 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 09:50:59,601 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 09:50:59,602 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 09:50:59,602 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 09:50:59,602 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 09:50:59,602 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 09:50:59,603 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 09:50:59,603 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 09:50:59,604 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ff49610c-1fb4-4764-a609-4a77412846c6/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-23 09:50:59,613 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 09:50:59,613 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 09:50:59,613 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 09:50:59,613 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 09:50:59,614 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 09:50:59,614 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 09:50:59,614 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 09:50:59,614 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 09:50:59,614 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 09:50:59,614 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 09:50:59,615 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 09:50:59,615 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 09:50:59,615 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 09:50:59,615 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 09:50:59,615 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 09:50:59,615 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 09:50:59,615 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 09:50:59,615 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 09:50:59,616 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 09:50:59,616 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 09:50:59,616 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 09:50:59,616 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 09:50:59,616 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 09:50:59,616 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 09:50:59,616 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 09:50:59,616 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 09:50:59,617 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 09:50:59,617 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 09:50:59,617 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 09:50:59,617 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 09:50:59,617 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_ff49610c-1fb4-4764-a609-4a77412846c6/bin-2019/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 -> 0527820ce7f25e6a965a8fdfcd5a0cfce4fa7f41 [2018-11-23 09:50:59,639 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 09:50:59,648 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 09:50:59,651 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 09:50:59,652 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 09:50:59,652 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 09:50:59,653 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ff49610c-1fb4-4764-a609-4a77412846c6/bin-2019/uautomizer/../../sv-benchmarks/c/pthread-ext/34_double_lock_p2_vs_true-unreach-call.i [2018-11-23 09:50:59,698 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ff49610c-1fb4-4764-a609-4a77412846c6/bin-2019/uautomizer/data/3c8d5cb87/75afaac4415346e3b90d9ca611c7c567/FLAGc02cb9d37 [2018-11-23 09:51:00,149 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 09:51:00,150 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ff49610c-1fb4-4764-a609-4a77412846c6/sv-benchmarks/c/pthread-ext/34_double_lock_p2_vs_true-unreach-call.i [2018-11-23 09:51:00,160 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ff49610c-1fb4-4764-a609-4a77412846c6/bin-2019/uautomizer/data/3c8d5cb87/75afaac4415346e3b90d9ca611c7c567/FLAGc02cb9d37 [2018-11-23 09:51:00,670 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ff49610c-1fb4-4764-a609-4a77412846c6/bin-2019/uautomizer/data/3c8d5cb87/75afaac4415346e3b90d9ca611c7c567 [2018-11-23 09:51:00,672 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 09:51:00,673 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 09:51:00,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 09:51:00,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 09:51:00,676 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 09:51:00,677 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:51:00" (1/1) ... [2018-11-23 09:51:00,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ed7d6fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:51:00, skipping insertion in model container [2018-11-23 09:51:00,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:51:00" (1/1) ... [2018-11-23 09:51:00,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 09:51:00,712 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 09:51:00,912 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 09:51:00,919 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 09:51:00,992 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 09:51:01,037 INFO L195 MainTranslator]: Completed translation [2018-11-23 09:51:01,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:51:01 WrapperNode [2018-11-23 09:51:01,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 09:51:01,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 09:51:01,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 09:51:01,038 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 09:51:01,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:51:01" (1/1) ... [2018-11-23 09:51:01,057 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:51:01" (1/1) ... [2018-11-23 09:51:01,075 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 09:51:01,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 09:51:01,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 09:51:01,076 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 09:51:01,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:51:01" (1/1) ... [2018-11-23 09:51:01,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:51:01" (1/1) ... [2018-11-23 09:51:01,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:51:01" (1/1) ... [2018-11-23 09:51:01,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:51:01" (1/1) ... [2018-11-23 09:51:01,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:51:01" (1/1) ... [2018-11-23 09:51:01,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:51:01" (1/1) ... [2018-11-23 09:51:01,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:51:01" (1/1) ... [2018-11-23 09:51:01,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 09:51:01,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 09:51:01,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 09:51:01,098 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 09:51:01,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:51:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ff49610c-1fb4-4764-a609-4a77412846c6/bin-2019/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 [2018-11-23 09:51:01,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 09:51:01,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-23 09:51:01,145 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2018-11-23 09:51:01,145 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2018-11-23 09:51:01,146 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2018-11-23 09:51:01,146 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2018-11-23 09:51:01,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-23 09:51:01,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 09:51:01,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2018-11-23 09:51:01,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 09:51:01,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 09:51:01,147 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-11-23 09:51:01,232 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_acquire_returnLabel [2018-11-23 09:51:01,232 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_inc_returnLabel [2018-11-23 09:51:01,232 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_dec_returnLabel [2018-11-23 09:51:01,233 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_release_returnLabel [2018-11-23 09:51:01,233 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_acquire_returnLabel#2 [2018-11-23 09:51:01,233 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_dec_returnLabel#2 [2018-11-23 09:51:01,233 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_inc_returnLabel#2 [2018-11-23 09:51:01,234 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_release_returnLabel#2 [2018-11-23 09:51:01,298 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_acquire_returnLabel [2018-11-23 09:51:01,298 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_release_returnLabel [2018-11-23 09:51:01,298 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_acquire_returnLabel#2 [2018-11-23 09:51:01,300 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_release_returnLabel#2 [2018-11-23 09:51:01,349 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 09:51:01,349 INFO L280 CfgBuilder]: Removed 34 assue(true) statements. [2018-11-23 09:51:01,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:51:01 BoogieIcfgContainer [2018-11-23 09:51:01,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 09:51:01,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 09:51:01,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 09:51:01,352 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 09:51:01,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:51:00" (1/3) ... [2018-11-23 09:51:01,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d8121b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:51:01, skipping insertion in model container [2018-11-23 09:51:01,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:51:01" (2/3) ... [2018-11-23 09:51:01,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d8121b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:51:01, skipping insertion in model container [2018-11-23 09:51:01,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:51:01" (3/3) ... [2018-11-23 09:51:01,355 INFO L112 eAbstractionObserver]: Analyzing ICFG 34_double_lock_p2_vs_true-unreach-call.i [2018-11-23 09:51:01,382 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,382 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,383 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,383 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,383 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,383 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,383 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,384 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2___VERIFIER_atomic_acquire_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,384 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr2___VERIFIER_atomic_release_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,385 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2___VERIFIER_atomic_release_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,385 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,385 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2___VERIFIER_atomic_release_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,385 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2___VERIFIER_atomic_release_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,385 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2___VERIFIER_atomic_dec_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,385 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr2___VERIFIER_atomic_acquire_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,385 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr2___VERIFIER_atomic_acquire_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,385 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr2___VERIFIER_atomic_release_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,385 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2___VERIFIER_atomic_acquire_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,386 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2___VERIFIER_atomic_inc_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,386 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2___VERIFIER_atomic_acquire_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,386 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2___VERIFIER_atomic_acquire_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,386 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr2___VERIFIER_atomic_release_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,386 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2___VERIFIER_atomic_release_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,386 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,386 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2___VERIFIER_atomic_release_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,386 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2___VERIFIER_atomic_release_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,386 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2___VERIFIER_atomic_dec_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,386 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr2___VERIFIER_atomic_acquire_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,386 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr2___VERIFIER_atomic_acquire_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,387 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr2___VERIFIER_atomic_release_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,387 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2___VERIFIER_atomic_acquire_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,387 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2___VERIFIER_atomic_inc_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,387 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2___VERIFIER_atomic_acquire_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,387 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,387 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,388 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,388 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,388 WARN L317 ript$VariableManager]: TermVariabe Thread1_thr1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,388 WARN L317 ript$VariableManager]: TermVariabe Thread1_thr1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,389 WARN L317 ript$VariableManager]: TermVariabe Thread1_thr1___VERIFIER_atomic_acquire_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,389 WARN L317 ript$VariableManager]: TermVariabe Thread1_thr1___VERIFIER_atomic_acquire_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,389 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1___VERIFIER_atomic_acquire_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,389 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1___VERIFIER_atomic_acquire_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,389 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1___VERIFIER_atomic_acquire_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,389 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,389 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,389 WARN L317 ript$VariableManager]: TermVariabe Thread1_thr1___VERIFIER_atomic_release_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,390 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1___VERIFIER_atomic_acquire_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,390 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1___VERIFIER_atomic_release_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,390 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1___VERIFIER_atomic_release_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,390 WARN L317 ript$VariableManager]: TermVariabe Thread1_thr1___VERIFIER_atomic_acquire_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,390 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1___VERIFIER_atomic_release_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,390 WARN L317 ript$VariableManager]: TermVariabe Thread1_thr1___VERIFIER_atomic_acquire_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,390 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1___VERIFIER_atomic_acquire_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,391 WARN L317 ript$VariableManager]: TermVariabe Thread1_thr1___VERIFIER_atomic_release_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,391 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1___VERIFIER_atomic_acquire_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,391 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1___VERIFIER_atomic_release_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,391 WARN L317 ript$VariableManager]: TermVariabe Thread1_thr1___VERIFIER_atomic_release_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,391 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1___VERIFIER_atomic_release_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,392 WARN L317 ript$VariableManager]: TermVariabe Thread1_thr1___VERIFIER_atomic_release_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,392 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1___VERIFIER_atomic_release_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:01,404 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-11-23 09:51:01,405 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 09:51:01,410 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-11-23 09:51:01,419 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-11-23 09:51:01,437 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 09:51:01,437 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 09:51:01,437 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 09:51:01,438 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 09:51:01,438 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 09:51:01,438 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 09:51:01,438 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 09:51:01,438 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 09:51:01,438 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 09:51:01,446 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40places, 44 transitions [2018-11-23 09:51:01,465 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: Petrification does not provide enough thread instances for Thread0_thr2 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.getInitialAbstraction(BasicCegarLoop.java:340) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:402) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-11-23 09:51:01,467 INFO L168 Benchmark]: Toolchain (without parser) took 795.25 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 956.5 MB in the beginning and 1.0 GB in the end (delta: -92.9 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2018-11-23 09:51:01,469 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 09:51:01,469 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.61 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 956.5 MB in the beginning and 1.1 GB in the end (delta: -133.7 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. [2018-11-23 09:51:01,470 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-23 09:51:01,471 INFO L168 Benchmark]: Boogie Preprocessor took 22.04 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 09:51:01,471 INFO L168 Benchmark]: RCFGBuilder took 251.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. [2018-11-23 09:51:01,472 INFO L168 Benchmark]: TraceAbstraction took 117.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2018-11-23 09:51:01,475 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 364.61 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 956.5 MB in the beginning and 1.1 GB in the end (delta: -133.7 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 37.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.04 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 251.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 117.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: Petrification does not provide enough thread instances for Thread0_thr2 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: Petrification does not provide enough thread instances for Thread0_thr2: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.getInitialAbstraction(BasicCegarLoop.java:340) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-aa41828 [2018-11-23 09:51:02,866 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 09:51:02,867 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 09:51:02,876 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 09:51:02,876 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 09:51:02,877 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 09:51:02,878 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 09:51:02,879 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 09:51:02,880 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 09:51:02,880 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 09:51:02,881 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 09:51:02,881 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 09:51:02,882 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 09:51:02,882 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 09:51:02,883 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 09:51:02,883 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 09:51:02,884 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 09:51:02,885 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 09:51:02,886 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 09:51:02,887 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 09:51:02,888 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 09:51:02,889 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 09:51:02,890 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 09:51:02,891 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 09:51:02,891 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 09:51:02,891 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 09:51:02,892 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 09:51:02,892 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 09:51:02,893 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 09:51:02,894 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 09:51:02,894 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 09:51:02,894 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 09:51:02,894 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 09:51:02,895 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 09:51:02,895 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 09:51:02,896 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 09:51:02,896 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ff49610c-1fb4-4764-a609-4a77412846c6/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-23 09:51:02,906 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 09:51:02,906 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 09:51:02,906 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 09:51:02,906 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 09:51:02,907 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 09:51:02,907 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 09:51:02,907 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 09:51:02,907 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 09:51:02,908 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 09:51:02,908 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 09:51:02,908 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 09:51:02,908 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 09:51:02,908 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 09:51:02,908 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 09:51:02,908 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-23 09:51:02,908 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-23 09:51:02,909 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 09:51:02,909 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 09:51:02,909 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 09:51:02,909 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 09:51:02,909 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 09:51:02,909 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 09:51:02,909 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 09:51:02,909 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 09:51:02,910 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 09:51:02,910 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 09:51:02,910 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 09:51:02,910 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 09:51:02,910 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-23 09:51:02,910 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 09:51:02,910 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-23 09:51:02,911 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-23 09:51:02,911 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_ff49610c-1fb4-4764-a609-4a77412846c6/bin-2019/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 -> 0527820ce7f25e6a965a8fdfcd5a0cfce4fa7f41 [2018-11-23 09:51:02,938 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 09:51:02,947 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 09:51:02,950 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 09:51:02,951 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 09:51:02,951 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 09:51:02,952 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ff49610c-1fb4-4764-a609-4a77412846c6/bin-2019/uautomizer/../../sv-benchmarks/c/pthread-ext/34_double_lock_p2_vs_true-unreach-call.i [2018-11-23 09:51:02,990 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ff49610c-1fb4-4764-a609-4a77412846c6/bin-2019/uautomizer/data/7f93bf9dc/4ebb3a2b0cc744f796e86fc99cd0612f/FLAG2fae19777 [2018-11-23 09:51:03,416 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 09:51:03,417 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ff49610c-1fb4-4764-a609-4a77412846c6/sv-benchmarks/c/pthread-ext/34_double_lock_p2_vs_true-unreach-call.i [2018-11-23 09:51:03,427 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ff49610c-1fb4-4764-a609-4a77412846c6/bin-2019/uautomizer/data/7f93bf9dc/4ebb3a2b0cc744f796e86fc99cd0612f/FLAG2fae19777 [2018-11-23 09:51:03,438 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ff49610c-1fb4-4764-a609-4a77412846c6/bin-2019/uautomizer/data/7f93bf9dc/4ebb3a2b0cc744f796e86fc99cd0612f [2018-11-23 09:51:03,441 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 09:51:03,442 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 09:51:03,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 09:51:03,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 09:51:03,446 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 09:51:03,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:51:03" (1/1) ... [2018-11-23 09:51:03,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@107f8ef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:51:03, skipping insertion in model container [2018-11-23 09:51:03,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:51:03" (1/1) ... [2018-11-23 09:51:03,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 09:51:03,487 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 09:51:03,722 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 09:51:03,731 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 09:51:03,765 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 09:51:03,858 INFO L195 MainTranslator]: Completed translation [2018-11-23 09:51:03,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:51:03 WrapperNode [2018-11-23 09:51:03,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 09:51:03,859 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 09:51:03,859 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 09:51:03,859 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 09:51:03,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:51:03" (1/1) ... [2018-11-23 09:51:03,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:51:03" (1/1) ... [2018-11-23 09:51:03,899 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 09:51:03,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 09:51:03,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 09:51:03,900 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 09:51:03,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:51:03" (1/1) ... [2018-11-23 09:51:03,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:51:03" (1/1) ... [2018-11-23 09:51:03,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:51:03" (1/1) ... [2018-11-23 09:51:03,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:51:03" (1/1) ... [2018-11-23 09:51:03,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:51:03" (1/1) ... [2018-11-23 09:51:03,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:51:03" (1/1) ... [2018-11-23 09:51:03,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:51:03" (1/1) ... [2018-11-23 09:51:03,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 09:51:03,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 09:51:03,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 09:51:03,928 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 09:51:03,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:51:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ff49610c-1fb4-4764-a609-4a77412846c6/bin-2019/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 [2018-11-23 09:51:03,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 09:51:03,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-23 09:51:03,968 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2018-11-23 09:51:03,968 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2018-11-23 09:51:03,968 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2018-11-23 09:51:03,968 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2018-11-23 09:51:03,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 09:51:03,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-23 09:51:03,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2018-11-23 09:51:03,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 09:51:03,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 09:51:03,970 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-11-23 09:51:04,059 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_acquire_returnLabel [2018-11-23 09:51:04,060 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_inc_returnLabel [2018-11-23 09:51:04,060 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_dec_returnLabel [2018-11-23 09:51:04,060 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_release_returnLabel [2018-11-23 09:51:04,060 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_acquire_returnLabel#2 [2018-11-23 09:51:04,060 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_dec_returnLabel#2 [2018-11-23 09:51:04,061 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_inc_returnLabel#2 [2018-11-23 09:51:04,061 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_release_returnLabel#2 [2018-11-23 09:51:04,120 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_acquire_returnLabel [2018-11-23 09:51:04,120 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_release_returnLabel [2018-11-23 09:51:04,120 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_acquire_returnLabel#2 [2018-11-23 09:51:04,121 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_release_returnLabel#2 [2018-11-23 09:51:04,197 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 09:51:04,197 INFO L280 CfgBuilder]: Removed 34 assue(true) statements. [2018-11-23 09:51:04,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:51:04 BoogieIcfgContainer [2018-11-23 09:51:04,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 09:51:04,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 09:51:04,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 09:51:04,200 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 09:51:04,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:51:03" (1/3) ... [2018-11-23 09:51:04,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e0dd5e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:51:04, skipping insertion in model container [2018-11-23 09:51:04,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:51:03" (2/3) ... [2018-11-23 09:51:04,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e0dd5e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:51:04, skipping insertion in model container [2018-11-23 09:51:04,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:51:04" (3/3) ... [2018-11-23 09:51:04,202 INFO L112 eAbstractionObserver]: Analyzing ICFG 34_double_lock_p2_vs_true-unreach-call.i [2018-11-23 09:51:04,225 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,225 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,225 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,226 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,226 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,226 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,226 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2___VERIFIER_atomic_acquire_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,226 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr2___VERIFIER_atomic_release_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,226 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2___VERIFIER_atomic_release_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,226 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,227 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2___VERIFIER_atomic_release_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,227 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2___VERIFIER_atomic_release_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,227 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2___VERIFIER_atomic_dec_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,227 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr2___VERIFIER_atomic_acquire_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,227 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr2___VERIFIER_atomic_acquire_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,227 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr2___VERIFIER_atomic_release_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,227 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2___VERIFIER_atomic_acquire_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,227 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2___VERIFIER_atomic_inc_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,227 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2___VERIFIER_atomic_acquire_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,228 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2___VERIFIER_atomic_acquire_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,228 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr2___VERIFIER_atomic_release_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,228 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2___VERIFIER_atomic_release_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,228 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,228 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2___VERIFIER_atomic_release_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,228 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2___VERIFIER_atomic_release_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,228 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2___VERIFIER_atomic_dec_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,228 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr2___VERIFIER_atomic_acquire_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,228 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr2___VERIFIER_atomic_acquire_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,228 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr2___VERIFIER_atomic_release_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,228 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2___VERIFIER_atomic_acquire_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,228 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2___VERIFIER_atomic_inc_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,229 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2___VERIFIER_atomic_acquire_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,229 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,229 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,233 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,233 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,234 WARN L317 ript$VariableManager]: TermVariabe Thread1_thr1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,234 WARN L317 ript$VariableManager]: TermVariabe Thread1_thr1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,234 WARN L317 ript$VariableManager]: TermVariabe Thread1_thr1___VERIFIER_atomic_acquire_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,234 WARN L317 ript$VariableManager]: TermVariabe Thread1_thr1___VERIFIER_atomic_acquire_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,234 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1___VERIFIER_atomic_acquire_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,234 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1___VERIFIER_atomic_acquire_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,234 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1___VERIFIER_atomic_acquire_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,235 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,235 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,235 WARN L317 ript$VariableManager]: TermVariabe Thread1_thr1___VERIFIER_atomic_release_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,235 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1___VERIFIER_atomic_acquire_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,235 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1___VERIFIER_atomic_release_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,235 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1___VERIFIER_atomic_release_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,235 WARN L317 ript$VariableManager]: TermVariabe Thread1_thr1___VERIFIER_atomic_acquire_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,235 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1___VERIFIER_atomic_release_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,235 WARN L317 ript$VariableManager]: TermVariabe Thread1_thr1___VERIFIER_atomic_acquire_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,236 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1___VERIFIER_atomic_acquire_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,236 WARN L317 ript$VariableManager]: TermVariabe Thread1_thr1___VERIFIER_atomic_release_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,236 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1___VERIFIER_atomic_acquire_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,236 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1___VERIFIER_atomic_release_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,236 WARN L317 ript$VariableManager]: TermVariabe Thread1_thr1___VERIFIER_atomic_release_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,236 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1___VERIFIER_atomic_release_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,236 WARN L317 ript$VariableManager]: TermVariabe Thread1_thr1___VERIFIER_atomic_release_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,237 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1___VERIFIER_atomic_release_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 09:51:04,248 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-11-23 09:51:04,249 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 09:51:04,254 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-11-23 09:51:04,263 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-11-23 09:51:04,278 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 09:51:04,279 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 09:51:04,279 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 09:51:04,279 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 09:51:04,279 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 09:51:04,279 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 09:51:04,279 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 09:51:04,279 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 09:51:04,280 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 09:51:04,286 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39places, 43 transitions [2018-11-23 09:51:04,302 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: Petrification does not provide enough thread instances for Thread0_thr2 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.getInitialAbstraction(BasicCegarLoop.java:340) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:402) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-11-23 09:51:04,306 INFO L168 Benchmark]: Toolchain (without parser) took 864.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 945.4 MB in the beginning and 1.1 GB in the end (delta: -117.2 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. [2018-11-23 09:51:04,307 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 09:51:04,307 INFO L168 Benchmark]: CACSL2BoogieTranslator took 416.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 945.4 MB in the beginning and 1.1 GB in the end (delta: -175.6 MB). Peak memory consumption was 39.7 MB. Max. memory is 11.5 GB. [2018-11-23 09:51:04,308 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.30 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-11-23 09:51:04,308 INFO L168 Benchmark]: Boogie Preprocessor took 28.11 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 09:51:04,310 INFO L168 Benchmark]: RCFGBuilder took 269.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 11.5 GB. [2018-11-23 09:51:04,310 INFO L168 Benchmark]: TraceAbstraction took 106.93 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: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2018-11-23 09:51:04,312 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 416.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 945.4 MB in the beginning and 1.1 GB in the end (delta: -175.6 MB). Peak memory consumption was 39.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.30 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.11 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 269.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 106.93 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: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: Petrification does not provide enough thread instances for Thread0_thr2 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: Petrification does not provide enough thread instances for Thread0_thr2: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.getInitialAbstraction(BasicCegarLoop.java:340) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...