./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock_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_671571ee-daca-47cd-916d-b959397a29d5/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_671571ee-daca-47cd-916d-b959397a29d5/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_671571ee-daca-47cd-916d-b959397a29d5/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_671571ee-daca-47cd-916d-b959397a29d5/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_671571ee-daca-47cd-916d-b959397a29d5/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_671571ee-daca-47cd-916d-b959397a29d5/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 1d08478f13fb71f111fd419179c47ab65881301c .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 13:04:16,454 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 13:04:16,455 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 13:04:16,463 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 13:04:16,463 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 13:04:16,464 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 13:04:16,464 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 13:04:16,465 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 13:04:16,466 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 13:04:16,467 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 13:04:16,468 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 13:04:16,468 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 13:04:16,469 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 13:04:16,469 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 13:04:16,470 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 13:04:16,471 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 13:04:16,471 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 13:04:16,472 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 13:04:16,474 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 13:04:16,475 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 13:04:16,476 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 13:04:16,477 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 13:04:16,478 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 13:04:16,478 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 13:04:16,478 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 13:04:16,479 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 13:04:16,480 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 13:04:16,481 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 13:04:16,482 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 13:04:16,482 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 13:04:16,483 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 13:04:16,483 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 13:04:16,483 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 13:04:16,483 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 13:04:16,484 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 13:04:16,485 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 13:04:16,485 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_671571ee-daca-47cd-916d-b959397a29d5/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-23 13:04:16,494 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 13:04:16,495 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 13:04:16,495 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 13:04:16,495 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 13:04:16,496 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 13:04:16,496 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 13:04:16,496 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 13:04:16,496 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 13:04:16,496 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 13:04:16,496 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 13:04:16,497 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 13:04:16,497 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 13:04:16,497 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 13:04:16,497 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 13:04:16,497 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 13:04:16,497 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 13:04:16,497 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 13:04:16,497 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 13:04:16,498 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 13:04:16,498 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 13:04:16,498 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 13:04:16,498 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 13:04:16,498 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 13:04:16,498 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 13:04:16,498 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 13:04:16,499 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 13:04:16,499 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 13:04:16,499 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 13:04:16,499 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 13:04:16,499 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 13:04:16,499 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_671571ee-daca-47cd-916d-b959397a29d5/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 -> 1d08478f13fb71f111fd419179c47ab65881301c [2018-11-23 13:04:16,527 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 13:04:16,536 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 13:04:16,539 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 13:04:16,540 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 13:04:16,540 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 13:04:16,540 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_671571ee-daca-47cd-916d-b959397a29d5/bin-2019/uautomizer/../../sv-benchmarks/c/pthread-atomic/read_write_lock_true-unreach-call.i [2018-11-23 13:04:16,585 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_671571ee-daca-47cd-916d-b959397a29d5/bin-2019/uautomizer/data/f0e79726e/cdbf2a314e9947cdad158032038793d0/FLAG57e3af0f0 [2018-11-23 13:04:16,945 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 13:04:16,945 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_671571ee-daca-47cd-916d-b959397a29d5/sv-benchmarks/c/pthread-atomic/read_write_lock_true-unreach-call.i [2018-11-23 13:04:16,955 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_671571ee-daca-47cd-916d-b959397a29d5/bin-2019/uautomizer/data/f0e79726e/cdbf2a314e9947cdad158032038793d0/FLAG57e3af0f0 [2018-11-23 13:04:16,963 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_671571ee-daca-47cd-916d-b959397a29d5/bin-2019/uautomizer/data/f0e79726e/cdbf2a314e9947cdad158032038793d0 [2018-11-23 13:04:16,965 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 13:04:16,966 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 13:04:16,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 13:04:16,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 13:04:16,969 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 13:04:16,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:04:16" (1/1) ... [2018-11-23 13:04:16,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@de84d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:04:16, skipping insertion in model container [2018-11-23 13:04:16,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:04:16" (1/1) ... [2018-11-23 13:04:16,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 13:04:17,003 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 13:04:17,216 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 13:04:17,225 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 13:04:17,309 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 13:04:17,347 INFO L195 MainTranslator]: Completed translation [2018-11-23 13:04:17,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:04:17 WrapperNode [2018-11-23 13:04:17,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 13:04:17,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 13:04:17,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 13:04:17,348 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 13:04:17,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:04:17" (1/1) ... [2018-11-23 13:04:17,361 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:04:17" (1/1) ... [2018-11-23 13:04:17,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 13:04:17,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 13:04:17,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 13:04:17,377 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 13:04:17,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:04:17" (1/1) ... [2018-11-23 13:04:17,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:04:17" (1/1) ... [2018-11-23 13:04:17,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:04:17" (1/1) ... [2018-11-23 13:04:17,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:04:17" (1/1) ... [2018-11-23 13:04:17,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:04:17" (1/1) ... [2018-11-23 13:04:17,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:04:17" (1/1) ... [2018-11-23 13:04:17,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:04:17" (1/1) ... [2018-11-23 13:04:17,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 13:04:17,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 13:04:17,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 13:04:17,391 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 13:04:17,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:04:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_671571ee-daca-47cd-916d-b959397a29d5/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 13:04:17,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 13:04:17,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-23 13:04:17,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-23 13:04:17,429 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2018-11-23 13:04:17,429 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2018-11-23 13:04:17,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 13:04:17,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 13:04:17,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 13:04:17,430 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2018-11-23 13:04:17,430 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2018-11-23 13:04:17,431 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 13:04:17,509 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_read_lock_returnLabel [2018-11-23 13:04:17,511 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_release_read_lock_returnLabel [2018-11-23 13:04:17,641 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_write_lock_returnLabel [2018-11-23 13:04:17,654 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 13:04:17,655 INFO L280 CfgBuilder]: Removed 10 assue(true) statements. [2018-11-23 13:04:17,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:04:17 BoogieIcfgContainer [2018-11-23 13:04:17,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 13:04:17,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 13:04:17,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 13:04:17,658 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 13:04:17,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:04:16" (1/3) ... [2018-11-23 13:04:17,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf2ee11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:04:17, skipping insertion in model container [2018-11-23 13:04:17,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:04:17" (2/3) ... [2018-11-23 13:04:17,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf2ee11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:04:17, skipping insertion in model container [2018-11-23 13:04:17,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:04:17" (3/3) ... [2018-11-23 13:04:17,661 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock_true-unreach-call.i [2018-11-23 13:04:17,685 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:04:17,685 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:04:17,686 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:04:17,686 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:04:17,686 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:04:17,686 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:04:17,686 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:04:17,687 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:04:17,687 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:04:17,687 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:04:17,687 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:04:17,687 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:04:17,687 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:04:17,688 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:04:17,688 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:04:17,688 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:04:17,688 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:04:17,688 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:04:17,689 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:04:17,689 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:04:17,689 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:04:17,689 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:04:17,689 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:04:17,689 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:04:17,690 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:04:17,690 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:04:17,690 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:04:17,690 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:04:17,690 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:04:17,690 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:04:17,740 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-11-23 13:04:17,740 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 13:04:17,746 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-23 13:04:17,757 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-23 13:04:17,773 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 13:04:17,773 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 13:04:17,774 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 13:04:17,774 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 13:04:17,774 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 13:04:17,774 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 13:04:17,774 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 13:04:17,774 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 13:04:17,774 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 13:04:17,781 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 82places, 91 transitions [2018-11-23 13:04:18,887 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 22596 states. [2018-11-23 13:04:18,889 INFO L276 IsEmpty]: Start isEmpty. Operand 22596 states. [2018-11-23 13:04:18,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-23 13:04:18,897 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:04:18,897 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:04:18,899 INFO L423 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:04:18,904 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:04:18,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1971274062, now seen corresponding path program 1 times [2018-11-23 13:04:18,906 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:04:18,906 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:04:18,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:04:18,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:04:18,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:04:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:04:19,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:04:19,056 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:04:19,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 13:04:19,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 13:04:19,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 13:04:19,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 13:04:19,070 INFO L87 Difference]: Start difference. First operand 22596 states. Second operand 4 states. [2018-11-23 13:04:19,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:04:19,564 INFO L93 Difference]: Finished difference Result 53210 states and 199742 transitions. [2018-11-23 13:04:19,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 13:04:19,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-23 13:04:19,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:04:19,713 INFO L225 Difference]: With dead ends: 53210 [2018-11-23 13:04:19,713 INFO L226 Difference]: Without dead ends: 38180 [2018-11-23 13:04:19,714 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-23 13:04:19,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38180 states. [2018-11-23 13:04:20,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38180 to 20681. [2018-11-23 13:04:20,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20681 states. [2018-11-23 13:04:20,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20681 states to 20681 states and 79025 transitions. [2018-11-23 13:04:20,605 INFO L78 Accepts]: Start accepts. Automaton has 20681 states and 79025 transitions. Word has length 23 [2018-11-23 13:04:20,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:04:20,606 INFO L480 AbstractCegarLoop]: Abstraction has 20681 states and 79025 transitions. [2018-11-23 13:04:20,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 13:04:20,606 INFO L276 IsEmpty]: Start isEmpty. Operand 20681 states and 79025 transitions. [2018-11-23 13:04:20,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-23 13:04:20,608 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:04:20,608 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:04:20,608 INFO L423 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:04:20,610 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:04:20,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1843184933, now seen corresponding path program 1 times [2018-11-23 13:04:20,610 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:04:20,610 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:04:20,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:04:20,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:04:20,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:04:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:04:20,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:04:20,695 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:04:20,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 13:04:20,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 13:04:20,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 13:04:20,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-23 13:04:20,697 INFO L87 Difference]: Start difference. First operand 20681 states and 79025 transitions. Second operand 5 states. [2018-11-23 13:04:20,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:04:20,857 INFO L93 Difference]: Finished difference Result 18941 states and 68442 transitions. [2018-11-23 13:04:20,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 13:04:20,857 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-11-23 13:04:20,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:04:20,903 INFO L225 Difference]: With dead ends: 18941 [2018-11-23 13:04:20,903 INFO L226 Difference]: Without dead ends: 18701 [2018-11-23 13:04:20,903 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-23 13:04:20,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18701 states. [2018-11-23 13:04:21,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18701 to 18701. [2018-11-23 13:04:21,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18701 states. [2018-11-23 13:04:21,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18701 states to 18701 states and 67574 transitions. [2018-11-23 13:04:21,222 INFO L78 Accepts]: Start accepts. Automaton has 18701 states and 67574 transitions. Word has length 25 [2018-11-23 13:04:21,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:04:21,222 INFO L480 AbstractCegarLoop]: Abstraction has 18701 states and 67574 transitions. [2018-11-23 13:04:21,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 13:04:21,223 INFO L276 IsEmpty]: Start isEmpty. Operand 18701 states and 67574 transitions. [2018-11-23 13:04:21,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-23 13:04:21,225 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:04:21,225 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:04:21,225 INFO L423 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:04:21,225 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:04:21,225 INFO L82 PathProgramCache]: Analyzing trace with hash 714069777, now seen corresponding path program 2 times [2018-11-23 13:04:21,226 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:04:21,226 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:04:21,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:04:21,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:04:21,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:04:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:04:21,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:04:21,290 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:04:21,290 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 13:04:21,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 13:04:21,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 13:04:21,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 13:04:21,291 INFO L87 Difference]: Start difference. First operand 18701 states and 67574 transitions. Second operand 4 states. [2018-11-23 13:04:21,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:04:21,492 INFO L93 Difference]: Finished difference Result 17297 states and 57246 transitions. [2018-11-23 13:04:21,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 13:04:21,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-11-23 13:04:21,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:04:21,546 INFO L225 Difference]: With dead ends: 17297 [2018-11-23 13:04:21,547 INFO L226 Difference]: Without dead ends: 16721 [2018-11-23 13:04:21,547 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 13:04:21,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16721 states. [2018-11-23 13:04:21,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16721 to 12992. [2018-11-23 13:04:21,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12992 states. [2018-11-23 13:04:21,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12992 states to 12992 states and 43427 transitions. [2018-11-23 13:04:21,831 INFO L78 Accepts]: Start accepts. Automaton has 12992 states and 43427 transitions. Word has length 25 [2018-11-23 13:04:21,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:04:21,831 INFO L480 AbstractCegarLoop]: Abstraction has 12992 states and 43427 transitions. [2018-11-23 13:04:21,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 13:04:21,832 INFO L276 IsEmpty]: Start isEmpty. Operand 12992 states and 43427 transitions. [2018-11-23 13:04:21,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-23 13:04:21,834 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:04:21,834 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:04:21,834 INFO L423 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:04:21,835 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:04:21,835 INFO L82 PathProgramCache]: Analyzing trace with hash 47924841, now seen corresponding path program 1 times [2018-11-23 13:04:21,835 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:04:21,835 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:04:21,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:04:21,838 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 13:04:21,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:04:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:04:21,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:04:21,875 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:04:21,875 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 13:04:21,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 13:04:21,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 13:04:21,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 13:04:21,876 INFO L87 Difference]: Start difference. First operand 12992 states and 43427 transitions. Second operand 4 states. [2018-11-23 13:04:21,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:04:21,966 INFO L93 Difference]: Finished difference Result 14324 states and 47560 transitions. [2018-11-23 13:04:21,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 13:04:21,967 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-11-23 13:04:21,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:04:21,980 INFO L225 Difference]: With dead ends: 14324 [2018-11-23 13:04:21,981 INFO L226 Difference]: Without dead ends: 8831 [2018-11-23 13:04:21,981 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-23 13:04:22,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8831 states. [2018-11-23 13:04:22,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8831 to 7334. [2018-11-23 13:04:22,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7334 states. [2018-11-23 13:04:22,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7334 states to 7334 states and 23840 transitions. [2018-11-23 13:04:22,086 INFO L78 Accepts]: Start accepts. Automaton has 7334 states and 23840 transitions. Word has length 29 [2018-11-23 13:04:22,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:04:22,087 INFO L480 AbstractCegarLoop]: Abstraction has 7334 states and 23840 transitions. [2018-11-23 13:04:22,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 13:04:22,087 INFO L276 IsEmpty]: Start isEmpty. Operand 7334 states and 23840 transitions. [2018-11-23 13:04:22,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-23 13:04:22,091 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:04:22,092 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:04:22,092 INFO L423 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:04:22,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:04:22,092 INFO L82 PathProgramCache]: Analyzing trace with hash 164056283, now seen corresponding path program 1 times [2018-11-23 13:04:22,092 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:04:22,092 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:04:22,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:04:22,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:04:22,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:04:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:04:22,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:04:22,158 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:04:22,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 13:04:22,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 13:04:22,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 13:04:22,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-23 13:04:22,158 INFO L87 Difference]: Start difference. First operand 7334 states and 23840 transitions. Second operand 5 states. [2018-11-23 13:04:22,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:04:22,204 INFO L93 Difference]: Finished difference Result 8558 states and 27434 transitions. [2018-11-23 13:04:22,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 13:04:22,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2018-11-23 13:04:22,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:04:22,215 INFO L225 Difference]: With dead ends: 8558 [2018-11-23 13:04:22,215 INFO L226 Difference]: Without dead ends: 7379 [2018-11-23 13:04:22,215 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-23 13:04:22,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7379 states. [2018-11-23 13:04:22,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7379 to 6803. [2018-11-23 13:04:22,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6803 states. [2018-11-23 13:04:22,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6803 states to 6803 states and 22284 transitions. [2018-11-23 13:04:22,313 INFO L78 Accepts]: Start accepts. Automaton has 6803 states and 22284 transitions. Word has length 37 [2018-11-23 13:04:22,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:04:22,314 INFO L480 AbstractCegarLoop]: Abstraction has 6803 states and 22284 transitions. [2018-11-23 13:04:22,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 13:04:22,314 INFO L276 IsEmpty]: Start isEmpty. Operand 6803 states and 22284 transitions. [2018-11-23 13:04:22,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-23 13:04:22,317 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:04:22,318 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:04:22,318 INFO L423 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:04:22,318 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:04:22,318 INFO L82 PathProgramCache]: Analyzing trace with hash -288917643, now seen corresponding path program 2 times [2018-11-23 13:04:22,318 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:04:22,319 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:04:22,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:04:22,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:04:22,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:04:22,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:04:22,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:04:22,376 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:04:22,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 13:04:22,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 13:04:22,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 13:04:22,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-23 13:04:22,377 INFO L87 Difference]: Start difference. First operand 6803 states and 22284 transitions. Second operand 5 states. [2018-11-23 13:04:22,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:04:22,399 INFO L93 Difference]: Finished difference Result 1907 states and 5204 transitions. [2018-11-23 13:04:22,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 13:04:22,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2018-11-23 13:04:22,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:04:22,400 INFO L225 Difference]: With dead ends: 1907 [2018-11-23 13:04:22,400 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 13:04:22,400 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-23 13:04:22,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 13:04:22,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 13:04:22,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 13:04:22,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 13:04:22,401 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2018-11-23 13:04:22,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:04:22,401 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 13:04:22,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 13:04:22,401 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 13:04:22,401 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 13:04:22,403 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-11-23 13:04:22,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:04:22 BasicIcfg [2018-11-23 13:04:22,405 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 13:04:22,405 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 13:04:22,405 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 13:04:22,405 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 13:04:22,405 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:04:17" (3/4) ... [2018-11-23 13:04:22,408 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 13:04:22,412 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reader [2018-11-23 13:04:22,412 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure writer [2018-11-23 13:04:22,415 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2018-11-23 13:04:22,416 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-23 13:04:22,444 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_671571ee-daca-47cd-916d-b959397a29d5/bin-2019/uautomizer/witness.graphml [2018-11-23 13:04:22,444 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 13:04:22,445 INFO L168 Benchmark]: Toolchain (without parser) took 5479.19 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 353.4 MB). Free memory was 957.5 MB in the beginning and 647.1 MB in the end (delta: 310.4 MB). Peak memory consumption was 663.7 MB. Max. memory is 11.5 GB. [2018-11-23 13:04:22,446 INFO L168 Benchmark]: CDTParser took 0.18 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 13:04:22,446 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.7 MB). Free memory was 957.5 MB in the beginning and 1.1 GB in the end (delta: -187.8 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. [2018-11-23 13:04:22,446 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-11-23 13:04:22,447 INFO L168 Benchmark]: Boogie Preprocessor took 14.38 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 13:04:22,447 INFO L168 Benchmark]: RCFGBuilder took 263.94 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: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. [2018-11-23 13:04:22,447 INFO L168 Benchmark]: TraceAbstraction took 4749.07 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 187.7 MB). Free memory was 1.1 GB in the beginning and 655.7 MB in the end (delta: 460.4 MB). Peak memory consumption was 648.1 MB. Max. memory is 11.5 GB. [2018-11-23 13:04:22,447 INFO L168 Benchmark]: Witness Printer took 39.36 ms. Allocated memory is still 1.4 GB. Free memory was 655.7 MB in the beginning and 647.1 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 11.5 GB. [2018-11-23 13:04:22,450 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 380.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.7 MB). Free memory was 957.5 MB in the beginning and 1.1 GB in the end (delta: -187.8 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.38 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 263.94 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: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4749.07 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 187.7 MB). Free memory was 1.1 GB in the beginning and 655.7 MB in the end (delta: 460.4 MB). Peak memory consumption was 648.1 MB. Max. memory is 11.5 GB. * Witness Printer took 39.36 ms. Allocated memory is still 1.4 GB. Free memory was 655.7 MB in the beginning and 647.1 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 659]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 659]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 659]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 99 locations, 3 error locations. SAFE Result, 4.6s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 786 SDtfs, 748 SDslu, 990 SDs, 0 SdLazy, 167 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22596occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 6 MinimizatonAttempts, 23301 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 176 NumberOfCodeBlocks, 176 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 170 ConstructedInterpolants, 0 QuantifiedInterpolants, 12148 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...