./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock_false-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_809da793-6758-41f7-872a-129a31002e06/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_809da793-6758-41f7-872a-129a31002e06/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_809da793-6758-41f7-872a-129a31002e06/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_809da793-6758-41f7-872a-129a31002e06/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_809da793-6758-41f7-872a-129a31002e06/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_809da793-6758-41f7-872a-129a31002e06/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 7a44ec3fe14113a3aba74e37fda369041ad122ce ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_809da793-6758-41f7-872a-129a31002e06/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_809da793-6758-41f7-872a-129a31002e06/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_809da793-6758-41f7-872a-129a31002e06/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_809da793-6758-41f7-872a-129a31002e06/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_809da793-6758-41f7-872a-129a31002e06/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_809da793-6758-41f7-872a-129a31002e06/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 7a44ec3fe14113a3aba74e37fda369041ad122ce ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 10:42:48,945 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 10:42:48,946 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 10:42:48,952 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 10:42:48,952 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 10:42:48,953 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 10:42:48,953 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 10:42:48,954 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 10:42:48,955 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 10:42:48,955 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 10:42:48,956 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 10:42:48,956 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 10:42:48,956 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 10:42:48,957 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 10:42:48,957 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 10:42:48,958 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 10:42:48,958 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 10:42:48,959 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 10:42:48,960 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 10:42:48,961 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 10:42:48,961 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 10:42:48,962 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 10:42:48,963 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 10:42:48,963 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 10:42:48,963 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 10:42:48,964 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 10:42:48,964 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 10:42:48,965 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 10:42:48,965 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 10:42:48,966 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 10:42:48,966 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 10:42:48,966 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 10:42:48,967 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 10:42:48,967 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 10:42:48,967 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 10:42:48,968 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 10:42:48,968 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_809da793-6758-41f7-872a-129a31002e06/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-08 10:42:48,975 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 10:42:48,975 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 10:42:48,976 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 10:42:48,976 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 10:42:48,976 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 10:42:48,976 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 10:42:48,976 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 10:42:48,977 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 10:42:48,977 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 10:42:48,977 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 10:42:48,977 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 10:42:48,977 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 10:42:48,977 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 10:42:48,977 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 10:42:48,977 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 10:42:48,978 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 10:42:48,978 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 10:42:48,978 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 10:42:48,978 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 10:42:48,978 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 10:42:48,978 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 10:42:48,978 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 10:42:48,978 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 10:42:48,979 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 10:42:48,979 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 10:42:48,979 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 10:42:48,979 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 10:42:48,979 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 10:42:48,979 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 10:42:48,979 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 10:42:48,979 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_809da793-6758-41f7-872a-129a31002e06/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 -> 7a44ec3fe14113a3aba74e37fda369041ad122ce [2018-12-08 10:42:48,998 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 10:42:49,006 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 10:42:49,007 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 10:42:49,008 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 10:42:49,009 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 10:42:49,009 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_809da793-6758-41f7-872a-129a31002e06/bin-2019/uautomizer/../../sv-benchmarks/c/pthread-atomic/read_write_lock_false-unreach-call.i [2018-12-08 10:42:49,053 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_809da793-6758-41f7-872a-129a31002e06/bin-2019/uautomizer/data/da12e6eee/58d96e7b1a9d472d883471f916ad64a5/FLAG848df6d02 [2018-12-08 10:42:49,527 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 10:42:49,527 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_809da793-6758-41f7-872a-129a31002e06/sv-benchmarks/c/pthread-atomic/read_write_lock_false-unreach-call.i [2018-12-08 10:42:49,534 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_809da793-6758-41f7-872a-129a31002e06/bin-2019/uautomizer/data/da12e6eee/58d96e7b1a9d472d883471f916ad64a5/FLAG848df6d02 [2018-12-08 10:42:49,542 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_809da793-6758-41f7-872a-129a31002e06/bin-2019/uautomizer/data/da12e6eee/58d96e7b1a9d472d883471f916ad64a5 [2018-12-08 10:42:49,544 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 10:42:49,545 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 10:42:49,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 10:42:49,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 10:42:49,548 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 10:42:49,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 10:42:49" (1/1) ... [2018-12-08 10:42:49,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52fe4f45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:42:49, skipping insertion in model container [2018-12-08 10:42:49,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 10:42:49" (1/1) ... [2018-12-08 10:42:49,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 10:42:49,573 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 10:42:49,728 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 10:42:49,735 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 10:42:49,802 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 10:42:49,830 INFO L195 MainTranslator]: Completed translation [2018-12-08 10:42:49,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:42:49 WrapperNode [2018-12-08 10:42:49,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 10:42:49,831 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 10:42:49,831 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 10:42:49,831 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 10:42:49,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:42:49" (1/1) ... [2018-12-08 10:42:49,846 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:42:49" (1/1) ... [2018-12-08 10:42:49,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 10:42:49,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 10:42:49,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 10:42:49,862 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 10:42:49,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:42:49" (1/1) ... [2018-12-08 10:42:49,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:42:49" (1/1) ... [2018-12-08 10:42:49,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:42:49" (1/1) ... [2018-12-08 10:42:49,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:42:49" (1/1) ... [2018-12-08 10:42:49,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:42:49" (1/1) ... [2018-12-08 10:42:49,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:42:49" (1/1) ... [2018-12-08 10:42:49,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:42:49" (1/1) ... [2018-12-08 10:42:49,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 10:42:49,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 10:42:49,880 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 10:42:49,880 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 10:42:49,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:42:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_809da793-6758-41f7-872a-129a31002e06/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 [2018-12-08 10:42:49,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 10:42:49,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-08 10:42:49,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-08 10:42:49,916 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2018-12-08 10:42:49,916 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2018-12-08 10:42:49,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 10:42:49,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 10:42:49,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 10:42:49,917 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2018-12-08 10:42:49,917 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2018-12-08 10:42:49,918 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-08 10:42:49,988 INFO L1421 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_read_lock_returnLabel [2018-12-08 10:42:50,072 INFO L1421 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_write_lock_returnLabel [2018-12-08 10:42:50,077 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 10:42:50,078 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-08 10:42:50,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 10:42:50 BoogieIcfgContainer [2018-12-08 10:42:50,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 10:42:50,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 10:42:50,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 10:42:50,081 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 10:42:50,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 10:42:49" (1/3) ... [2018-12-08 10:42:50,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13bc82e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 10:42:50, skipping insertion in model container [2018-12-08 10:42:50,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:42:49" (2/3) ... [2018-12-08 10:42:50,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13bc82e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 10:42:50, skipping insertion in model container [2018-12-08 10:42:50,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 10:42:50" (3/3) ... [2018-12-08 10:42:50,084 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock_false-unreach-call.i [2018-12-08 10:42:50,107 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,107 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,107 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,107 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,107 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,108 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,108 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,108 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,108 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,108 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,108 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,109 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,109 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,109 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,109 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,109 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,109 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,110 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,110 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,110 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,110 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,111 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,111 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,111 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,111 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,111 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,112 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,112 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,112 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,112 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,112 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,112 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,112 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,113 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:50,137 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-08 10:42:50,137 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 10:42:50,142 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-08 10:42:50,151 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-08 10:42:50,165 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 10:42:50,166 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 10:42:50,166 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 10:42:50,166 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 10:42:50,166 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 10:42:50,166 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 10:42:50,166 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 10:42:50,166 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 10:42:50,166 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 10:42:50,172 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84places, 93 transitions [2018-12-08 10:42:51,241 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26397 states. [2018-12-08 10:42:51,242 INFO L276 IsEmpty]: Start isEmpty. Operand 26397 states. [2018-12-08 10:42:51,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-08 10:42:51,247 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:42:51,248 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] [2018-12-08 10:42:51,249 INFO L423 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 10:42:51,252 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:42:51,253 INFO L82 PathProgramCache]: Analyzing trace with hash 563310493, now seen corresponding path program 1 times [2018-12-08 10:42:51,254 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:42:51,254 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:42:51,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:42:51,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:42:51,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:42:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:42:51,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:42:51,367 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:42:51,368 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 10:42:51,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 10:42:51,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 10:42:51,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 10:42:51,379 INFO L87 Difference]: Start difference. First operand 26397 states. Second operand 4 states. [2018-12-08 10:42:51,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:42:51,744 INFO L93 Difference]: Finished difference Result 52906 states and 202299 transitions. [2018-12-08 10:42:51,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 10:42:51,746 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-12-08 10:42:51,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:42:51,866 INFO L225 Difference]: With dead ends: 52906 [2018-12-08 10:42:51,866 INFO L226 Difference]: Without dead ends: 36824 [2018-12-08 10:42:51,867 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 [2018-12-08 10:42:51,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36824 states. [2018-12-08 10:42:52,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36824 to 22832. [2018-12-08 10:42:52,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22832 states. [2018-12-08 10:42:52,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22832 states to 22832 states and 87504 transitions. [2018-12-08 10:42:52,526 INFO L78 Accepts]: Start accepts. Automaton has 22832 states and 87504 transitions. Word has length 23 [2018-12-08 10:42:52,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:42:52,526 INFO L480 AbstractCegarLoop]: Abstraction has 22832 states and 87504 transitions. [2018-12-08 10:42:52,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 10:42:52,527 INFO L276 IsEmpty]: Start isEmpty. Operand 22832 states and 87504 transitions. [2018-12-08 10:42:52,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-08 10:42:52,528 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:42:52,528 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] [2018-12-08 10:42:52,528 INFO L423 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 10:42:52,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:42:52,529 INFO L82 PathProgramCache]: Analyzing trace with hash 175754366, now seen corresponding path program 1 times [2018-12-08 10:42:52,529 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:42:52,529 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:42:52,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:42:52,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:42:52,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:42:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:42:52,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:42:52,576 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:42:52,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 10:42:52,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 10:42:52,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 10:42:52,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 10:42:52,577 INFO L87 Difference]: Start difference. First operand 22832 states and 87504 transitions. Second operand 4 states. [2018-12-08 10:42:52,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:42:52,821 INFO L93 Difference]: Finished difference Result 36860 states and 131462 transitions. [2018-12-08 10:42:52,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 10:42:52,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-12-08 10:42:52,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:42:52,913 INFO L225 Difference]: With dead ends: 36860 [2018-12-08 10:42:52,913 INFO L226 Difference]: Without dead ends: 36500 [2018-12-08 10:42:52,914 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 [2018-12-08 10:42:53,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36500 states. [2018-12-08 10:42:53,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36500 to 24815. [2018-12-08 10:42:53,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24815 states. [2018-12-08 10:42:53,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24815 states to 24815 states and 89636 transitions. [2018-12-08 10:42:53,394 INFO L78 Accepts]: Start accepts. Automaton has 24815 states and 89636 transitions. Word has length 25 [2018-12-08 10:42:53,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:42:53,395 INFO L480 AbstractCegarLoop]: Abstraction has 24815 states and 89636 transitions. [2018-12-08 10:42:53,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 10:42:53,395 INFO L276 IsEmpty]: Start isEmpty. Operand 24815 states and 89636 transitions. [2018-12-08 10:42:53,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-08 10:42:53,397 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:42:53,397 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] [2018-12-08 10:42:53,398 INFO L423 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 10:42:53,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:42:53,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1318827774, now seen corresponding path program 2 times [2018-12-08 10:42:53,398 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:42:53,398 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:42:53,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:42:53,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:42:53,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:42:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:42:53,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:42:53,445 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:42:53,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 10:42:53,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 10:42:53,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 10:42:53,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-08 10:42:53,446 INFO L87 Difference]: Start difference. First operand 24815 states and 89636 transitions. Second operand 5 states. [2018-12-08 10:42:53,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:42:53,518 INFO L93 Difference]: Finished difference Result 14369 states and 47935 transitions. [2018-12-08 10:42:53,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 10:42:53,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-12-08 10:42:53,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:42:53,540 INFO L225 Difference]: With dead ends: 14369 [2018-12-08 10:42:53,540 INFO L226 Difference]: Without dead ends: 13889 [2018-12-08 10:42:53,540 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 [2018-12-08 10:42:53,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13889 states. [2018-12-08 10:42:53,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13889 to 13889. [2018-12-08 10:42:53,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13889 states. [2018-12-08 10:42:53,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13889 states to 13889 states and 46343 transitions. [2018-12-08 10:42:53,816 INFO L78 Accepts]: Start accepts. Automaton has 13889 states and 46343 transitions. Word has length 25 [2018-12-08 10:42:53,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:42:53,816 INFO L480 AbstractCegarLoop]: Abstraction has 13889 states and 46343 transitions. [2018-12-08 10:42:53,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 10:42:53,817 INFO L276 IsEmpty]: Start isEmpty. Operand 13889 states and 46343 transitions. [2018-12-08 10:42:53,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-08 10:42:53,818 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:42:53,818 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] [2018-12-08 10:42:53,818 INFO L423 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 10:42:53,818 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:42:53,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1891005508, now seen corresponding path program 1 times [2018-12-08 10:42:53,819 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:42:53,819 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:42:53,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:42:53,821 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 10:42:53,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:42:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:42:53,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:42:53,844 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:42:53,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 10:42:53,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 10:42:53,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 10:42:53,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 10:42:53,844 INFO L87 Difference]: Start difference. First operand 13889 states and 46343 transitions. Second operand 4 states. [2018-12-08 10:42:53,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:42:53,923 INFO L93 Difference]: Finished difference Result 14756 states and 48986 transitions. [2018-12-08 10:42:53,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 10:42:53,924 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-12-08 10:42:53,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:42:53,935 INFO L225 Difference]: With dead ends: 14756 [2018-12-08 10:42:53,935 INFO L226 Difference]: Without dead ends: 8996 [2018-12-08 10:42:53,935 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 [2018-12-08 10:42:53,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8996 states. [2018-12-08 10:42:54,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8996 to 7637. [2018-12-08 10:42:54,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7637 states. [2018-12-08 10:42:54,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7637 states to 7637 states and 24730 transitions. [2018-12-08 10:42:54,027 INFO L78 Accepts]: Start accepts. Automaton has 7637 states and 24730 transitions. Word has length 29 [2018-12-08 10:42:54,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:42:54,028 INFO L480 AbstractCegarLoop]: Abstraction has 7637 states and 24730 transitions. [2018-12-08 10:42:54,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 10:42:54,029 INFO L276 IsEmpty]: Start isEmpty. Operand 7637 states and 24730 transitions. [2018-12-08 10:42:54,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-08 10:42:54,032 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:42:54,032 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:42:54,032 INFO L423 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 10:42:54,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:42:54,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1715420402, now seen corresponding path program 1 times [2018-12-08 10:42:54,033 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:42:54,033 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:42:54,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:42:54,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:42:54,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:42:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:42:54,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:42:54,087 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:42:54,087 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-08 10:42:54,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-08 10:42:54,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-08 10:42:54,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-08 10:42:54,088 INFO L87 Difference]: Start difference. First operand 7637 states and 24730 transitions. Second operand 6 states. [2018-12-08 10:42:54,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:42:54,171 INFO L93 Difference]: Finished difference Result 8537 states and 27535 transitions. [2018-12-08 10:42:54,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-08 10:42:54,171 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2018-12-08 10:42:54,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:42:54,180 INFO L225 Difference]: With dead ends: 8537 [2018-12-08 10:42:54,180 INFO L226 Difference]: Without dead ends: 7898 [2018-12-08 10:42:54,181 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-12-08 10:42:54,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7898 states. [2018-12-08 10:42:54,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7898 to 7322. [2018-12-08 10:42:54,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7322 states. [2018-12-08 10:42:54,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7322 states to 7322 states and 23826 transitions. [2018-12-08 10:42:54,270 INFO L78 Accepts]: Start accepts. Automaton has 7322 states and 23826 transitions. Word has length 38 [2018-12-08 10:42:54,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:42:54,270 INFO L480 AbstractCegarLoop]: Abstraction has 7322 states and 23826 transitions. [2018-12-08 10:42:54,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-08 10:42:54,270 INFO L276 IsEmpty]: Start isEmpty. Operand 7322 states and 23826 transitions. [2018-12-08 10:42:54,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-08 10:42:54,273 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:42:54,273 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:42:54,273 INFO L423 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 10:42:54,273 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:42:54,273 INFO L82 PathProgramCache]: Analyzing trace with hash 140136184, now seen corresponding path program 2 times [2018-12-08 10:42:54,273 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:42:54,274 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:42:54,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:42:54,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:42:54,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:42:54,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 10:42:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 10:42:54,305 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:110) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:87) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.computeIcfgProgramExecution(IcfgProgramExecutionBuilder.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.getIcfgProgramExecution(IcfgProgramExecutionBuilder.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecution(TraceCheck.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:344) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) 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) [2018-12-08 10:42:54,307 INFO L168 Benchmark]: Toolchain (without parser) took 4762.49 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 502.8 MB). Free memory was 949.6 MB in the beginning and 846.2 MB in the end (delta: 103.3 MB). Peak memory consumption was 606.1 MB. Max. memory is 11.5 GB. [2018-12-08 10:42:54,308 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 10:42:54,308 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.85 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -132.4 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. [2018-12-08 10:42:54,308 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.12 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-08 10:42:54,309 INFO L168 Benchmark]: Boogie Preprocessor took 17.36 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. [2018-12-08 10:42:54,309 INFO L168 Benchmark]: RCFGBuilder took 198.49 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: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2018-12-08 10:42:54,309 INFO L168 Benchmark]: TraceAbstraction took 4227.79 ms. Allocated memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: 404.8 MB). Free memory was 1.0 GB in the beginning and 846.2 MB in the end (delta: 202.6 MB). Peak memory consumption was 607.3 MB. Max. memory is 11.5 GB. [2018-12-08 10:42:54,311 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 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 284.85 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -132.4 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.12 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.36 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 198.49 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: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4227.79 ms. Allocated memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: 404.8 MB). Free memory was 1.0 GB in the beginning and 846.2 MB in the end (delta: 202.6 MB). Peak memory consumption was 607.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-08 10:42:55,711 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 10:42:55,712 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 10:42:55,721 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 10:42:55,721 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 10:42:55,722 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 10:42:55,723 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 10:42:55,724 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 10:42:55,724 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 10:42:55,725 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 10:42:55,725 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 10:42:55,725 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 10:42:55,726 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 10:42:55,726 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 10:42:55,727 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 10:42:55,727 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 10:42:55,728 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 10:42:55,729 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 10:42:55,730 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 10:42:55,731 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 10:42:55,732 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 10:42:55,733 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 10:42:55,734 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 10:42:55,735 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 10:42:55,735 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 10:42:55,735 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 10:42:55,736 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 10:42:55,737 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 10:42:55,737 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 10:42:55,738 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 10:42:55,738 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 10:42:55,739 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 10:42:55,739 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 10:42:55,739 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 10:42:55,740 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 10:42:55,740 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 10:42:55,740 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_809da793-6758-41f7-872a-129a31002e06/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-12-08 10:42:55,751 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 10:42:55,751 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 10:42:55,751 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 10:42:55,752 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 10:42:55,752 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 10:42:55,752 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 10:42:55,752 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 10:42:55,753 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 10:42:55,753 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 10:42:55,753 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 10:42:55,753 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 10:42:55,753 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 10:42:55,753 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 10:42:55,753 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 10:42:55,753 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-08 10:42:55,754 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-08 10:42:55,754 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 10:42:55,754 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 10:42:55,754 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 10:42:55,754 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 10:42:55,754 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 10:42:55,754 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 10:42:55,755 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 10:42:55,755 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 10:42:55,755 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 10:42:55,755 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 10:42:55,755 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 10:42:55,755 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 10:42:55,755 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-08 10:42:55,756 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 10:42:55,756 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-08 10:42:55,756 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-08 10:42:55,756 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_809da793-6758-41f7-872a-129a31002e06/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 -> 7a44ec3fe14113a3aba74e37fda369041ad122ce [2018-12-08 10:42:55,779 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 10:42:55,786 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 10:42:55,788 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 10:42:55,789 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 10:42:55,790 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 10:42:55,790 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_809da793-6758-41f7-872a-129a31002e06/bin-2019/uautomizer/../../sv-benchmarks/c/pthread-atomic/read_write_lock_false-unreach-call.i [2018-12-08 10:42:55,826 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_809da793-6758-41f7-872a-129a31002e06/bin-2019/uautomizer/data/8a1fdfc8e/e30a5932bd654a47a11ff362153feee5/FLAG1c79d1866 [2018-12-08 10:42:56,242 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 10:42:56,243 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_809da793-6758-41f7-872a-129a31002e06/sv-benchmarks/c/pthread-atomic/read_write_lock_false-unreach-call.i [2018-12-08 10:42:56,251 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_809da793-6758-41f7-872a-129a31002e06/bin-2019/uautomizer/data/8a1fdfc8e/e30a5932bd654a47a11ff362153feee5/FLAG1c79d1866 [2018-12-08 10:42:56,260 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_809da793-6758-41f7-872a-129a31002e06/bin-2019/uautomizer/data/8a1fdfc8e/e30a5932bd654a47a11ff362153feee5 [2018-12-08 10:42:56,262 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 10:42:56,263 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 10:42:56,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 10:42:56,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 10:42:56,265 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 10:42:56,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 10:42:56" (1/1) ... [2018-12-08 10:42:56,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5554d819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:42:56, skipping insertion in model container [2018-12-08 10:42:56,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 10:42:56" (1/1) ... [2018-12-08 10:42:56,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 10:42:56,290 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 10:42:56,463 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 10:42:56,474 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 10:42:56,533 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 10:42:56,563 INFO L195 MainTranslator]: Completed translation [2018-12-08 10:42:56,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:42:56 WrapperNode [2018-12-08 10:42:56,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 10:42:56,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 10:42:56,564 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 10:42:56,564 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 10:42:56,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:42:56" (1/1) ... [2018-12-08 10:42:56,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:42:56" (1/1) ... [2018-12-08 10:42:56,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 10:42:56,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 10:42:56,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 10:42:56,591 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 10:42:56,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:42:56" (1/1) ... [2018-12-08 10:42:56,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:42:56" (1/1) ... [2018-12-08 10:42:56,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:42:56" (1/1) ... [2018-12-08 10:42:56,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:42:56" (1/1) ... [2018-12-08 10:42:56,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:42:56" (1/1) ... [2018-12-08 10:42:56,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:42:56" (1/1) ... [2018-12-08 10:42:56,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:42:56" (1/1) ... [2018-12-08 10:42:56,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 10:42:56,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 10:42:56,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 10:42:56,606 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 10:42:56,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:42:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_809da793-6758-41f7-872a-129a31002e06/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 [2018-12-08 10:42:56,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 10:42:56,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-08 10:42:56,637 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2018-12-08 10:42:56,637 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2018-12-08 10:42:56,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 10:42:56,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-08 10:42:56,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 10:42:56,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 10:42:56,638 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2018-12-08 10:42:56,638 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2018-12-08 10:42:56,638 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-08 10:42:56,708 INFO L1421 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_read_lock_returnLabel [2018-12-08 10:42:56,793 INFO L1421 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_write_lock_returnLabel [2018-12-08 10:42:56,798 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 10:42:56,799 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-08 10:42:56,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 10:42:56 BoogieIcfgContainer [2018-12-08 10:42:56,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 10:42:56,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 10:42:56,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 10:42:56,801 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 10:42:56,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 10:42:56" (1/3) ... [2018-12-08 10:42:56,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d5e10cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 10:42:56, skipping insertion in model container [2018-12-08 10:42:56,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:42:56" (2/3) ... [2018-12-08 10:42:56,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d5e10cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 10:42:56, skipping insertion in model container [2018-12-08 10:42:56,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 10:42:56" (3/3) ... [2018-12-08 10:42:56,803 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock_false-unreach-call.i [2018-12-08 10:42:56,828 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,828 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,828 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,828 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,829 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,829 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,829 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,830 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,830 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,830 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,830 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,830 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,831 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,831 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,831 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,831 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,831 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,831 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,832 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,832 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,832 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,832 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,833 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,833 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,833 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,833 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,833 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,834 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,834 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,834 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,834 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,834 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,835 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,835 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:42:56,867 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-08 10:42:56,867 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 10:42:56,873 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-08 10:42:56,882 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-08 10:42:56,896 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 10:42:56,896 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 10:42:56,896 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 10:42:56,896 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 10:42:56,896 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 10:42:56,897 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 10:42:56,897 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 10:42:56,897 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 10:42:56,897 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 10:42:56,905 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84places, 93 transitions [2018-12-08 10:42:58,133 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26397 states. [2018-12-08 10:42:58,134 INFO L276 IsEmpty]: Start isEmpty. Operand 26397 states. [2018-12-08 10:42:58,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-08 10:42:58,140 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:42:58,140 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] [2018-12-08 10:42:58,142 INFO L423 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 10:42:58,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:42:58,145 INFO L82 PathProgramCache]: Analyzing trace with hash 563310493, now seen corresponding path program 1 times [2018-12-08 10:42:58,148 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-08 10:42:58,148 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_809da793-6758-41f7-872a-129a31002e06/bin-2019/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-08 10:42:58,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:42:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:42:58,206 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:42:58,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:42:58,235 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 10:42:58,238 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:42:58,238 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 10:42:58,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 10:42:58,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 10:42:58,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 10:42:58,250 INFO L87 Difference]: Start difference. First operand 26397 states. Second operand 4 states. [2018-12-08 10:42:58,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:42:58,629 INFO L93 Difference]: Finished difference Result 52906 states and 202299 transitions. [2018-12-08 10:42:58,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 10:42:58,630 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-12-08 10:42:58,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:42:58,769 INFO L225 Difference]: With dead ends: 52906 [2018-12-08 10:42:58,769 INFO L226 Difference]: Without dead ends: 36824 [2018-12-08 10:42:58,770 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-08 10:42:58,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36824 states. [2018-12-08 10:42:59,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36824 to 22832. [2018-12-08 10:42:59,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22832 states. [2018-12-08 10:42:59,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22832 states to 22832 states and 87504 transitions. [2018-12-08 10:42:59,486 INFO L78 Accepts]: Start accepts. Automaton has 22832 states and 87504 transitions. Word has length 23 [2018-12-08 10:42:59,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:42:59,487 INFO L480 AbstractCegarLoop]: Abstraction has 22832 states and 87504 transitions. [2018-12-08 10:42:59,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 10:42:59,487 INFO L276 IsEmpty]: Start isEmpty. Operand 22832 states and 87504 transitions. [2018-12-08 10:42:59,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-08 10:42:59,489 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:42:59,489 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] [2018-12-08 10:42:59,489 INFO L423 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 10:42:59,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:42:59,490 INFO L82 PathProgramCache]: Analyzing trace with hash 175754366, now seen corresponding path program 1 times [2018-12-08 10:42:59,490 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-08 10:42:59,490 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_809da793-6758-41f7-872a-129a31002e06/bin-2019/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-08 10:42:59,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:42:59,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:42:59,539 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:42:59,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:42:59,554 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 10:42:59,555 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:42:59,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 10:42:59,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 10:42:59,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 10:42:59,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 10:42:59,557 INFO L87 Difference]: Start difference. First operand 22832 states and 87504 transitions. Second operand 4 states. [2018-12-08 10:42:59,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:42:59,791 INFO L93 Difference]: Finished difference Result 44834 states and 165805 transitions. [2018-12-08 10:42:59,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 10:42:59,792 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-12-08 10:42:59,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:42:59,900 INFO L225 Difference]: With dead ends: 44834 [2018-12-08 10:42:59,900 INFO L226 Difference]: Without dead ends: 44474 [2018-12-08 10:42:59,901 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 10:43:00,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44474 states. [2018-12-08 10:43:00,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44474 to 24815. [2018-12-08 10:43:00,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24815 states. [2018-12-08 10:43:00,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24815 states to 24815 states and 92018 transitions. [2018-12-08 10:43:00,454 INFO L78 Accepts]: Start accepts. Automaton has 24815 states and 92018 transitions. Word has length 25 [2018-12-08 10:43:00,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:43:00,455 INFO L480 AbstractCegarLoop]: Abstraction has 24815 states and 92018 transitions. [2018-12-08 10:43:00,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 10:43:00,455 INFO L276 IsEmpty]: Start isEmpty. Operand 24815 states and 92018 transitions. [2018-12-08 10:43:00,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-08 10:43:00,457 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:43:00,457 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] [2018-12-08 10:43:00,457 INFO L423 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 10:43:00,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:43:00,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1318827774, now seen corresponding path program 2 times [2018-12-08 10:43:00,458 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-08 10:43:00,458 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_809da793-6758-41f7-872a-129a31002e06/bin-2019/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-08 10:43:00,475 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-12-08 10:43:00,491 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-12-08 10:43:00,491 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 10:43:00,493 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:43:00,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:43:00,498 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 10:43:00,500 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:43:00,500 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 10:43:00,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 10:43:00,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 10:43:00,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 10:43:00,500 INFO L87 Difference]: Start difference. First operand 24815 states and 92018 transitions. Second operand 3 states. [2018-12-08 10:43:00,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:43:00,558 INFO L93 Difference]: Finished difference Result 18827 states and 66927 transitions. [2018-12-08 10:43:00,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 10:43:00,558 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-12-08 10:43:00,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:43:00,588 INFO L225 Difference]: With dead ends: 18827 [2018-12-08 10:43:00,589 INFO L226 Difference]: Without dead ends: 18347 [2018-12-08 10:43:00,589 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 10:43:00,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18347 states. [2018-12-08 10:43:00,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18347 to 18347. [2018-12-08 10:43:00,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18347 states. [2018-12-08 10:43:00,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18347 states to 18347 states and 65335 transitions. [2018-12-08 10:43:00,917 INFO L78 Accepts]: Start accepts. Automaton has 18347 states and 65335 transitions. Word has length 25 [2018-12-08 10:43:00,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:43:00,917 INFO L480 AbstractCegarLoop]: Abstraction has 18347 states and 65335 transitions. [2018-12-08 10:43:00,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 10:43:00,918 INFO L276 IsEmpty]: Start isEmpty. Operand 18347 states and 65335 transitions. [2018-12-08 10:43:00,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-08 10:43:00,920 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:43:00,920 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] [2018-12-08 10:43:00,920 INFO L423 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 10:43:00,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:43:00,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1891005508, now seen corresponding path program 1 times [2018-12-08 10:43:00,921 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-08 10:43:00,921 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_809da793-6758-41f7-872a-129a31002e06/bin-2019/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-08 10:43:00,937 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 10:43:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:43:00,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:43:00,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:43:00,967 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 10:43:00,969 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:43:00,969 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 10:43:00,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 10:43:00,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 10:43:00,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 10:43:00,969 INFO L87 Difference]: Start difference. First operand 18347 states and 65335 transitions. Second operand 4 states. [2018-12-08 10:43:01,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:43:01,108 INFO L93 Difference]: Finished difference Result 32444 states and 115032 transitions. [2018-12-08 10:43:01,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 10:43:01,108 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-12-08 10:43:01,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:43:01,153 INFO L225 Difference]: With dead ends: 32444 [2018-12-08 10:43:01,153 INFO L226 Difference]: Without dead ends: 25844 [2018-12-08 10:43:01,154 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-08 10:43:01,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25844 states. [2018-12-08 10:43:01,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25844 to 15197. [2018-12-08 10:43:01,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15197 states. [2018-12-08 10:43:01,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15197 states to 15197 states and 54478 transitions. [2018-12-08 10:43:01,415 INFO L78 Accepts]: Start accepts. Automaton has 15197 states and 54478 transitions. Word has length 29 [2018-12-08 10:43:01,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:43:01,416 INFO L480 AbstractCegarLoop]: Abstraction has 15197 states and 54478 transitions. [2018-12-08 10:43:01,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 10:43:01,416 INFO L276 IsEmpty]: Start isEmpty. Operand 15197 states and 54478 transitions. [2018-12-08 10:43:01,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-08 10:43:01,418 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:43:01,418 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] [2018-12-08 10:43:01,419 INFO L423 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 10:43:01,419 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:43:01,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1356359066, now seen corresponding path program 1 times [2018-12-08 10:43:01,419 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-08 10:43:01,419 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_809da793-6758-41f7-872a-129a31002e06/bin-2019/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-08 10:43:01,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:43:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:43:01,458 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:43:01,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:43:01,475 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 10:43:01,477 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:43:01,477 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 10:43:01,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 10:43:01,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 10:43:01,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 10:43:01,478 INFO L87 Difference]: Start difference. First operand 15197 states and 54478 transitions. Second operand 5 states. [2018-12-08 10:43:01,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:43:01,539 INFO L93 Difference]: Finished difference Result 8213 states and 26746 transitions. [2018-12-08 10:43:01,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 10:43:01,540 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2018-12-08 10:43:01,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:43:01,550 INFO L225 Difference]: With dead ends: 8213 [2018-12-08 10:43:01,551 INFO L226 Difference]: Without dead ends: 8213 [2018-12-08 10:43:01,551 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 10:43:01,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8213 states. [2018-12-08 10:43:01,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8213 to 7637. [2018-12-08 10:43:01,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7637 states. [2018-12-08 10:43:01,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7637 states to 7637 states and 24730 transitions. [2018-12-08 10:43:01,670 INFO L78 Accepts]: Start accepts. Automaton has 7637 states and 24730 transitions. Word has length 33 [2018-12-08 10:43:01,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:43:01,670 INFO L480 AbstractCegarLoop]: Abstraction has 7637 states and 24730 transitions. [2018-12-08 10:43:01,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 10:43:01,670 INFO L276 IsEmpty]: Start isEmpty. Operand 7637 states and 24730 transitions. [2018-12-08 10:43:01,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-08 10:43:01,674 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:43:01,674 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:43:01,675 INFO L423 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 10:43:01,675 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:43:01,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1715420402, now seen corresponding path program 1 times [2018-12-08 10:43:01,675 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-08 10:43:01,675 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_809da793-6758-41f7-872a-129a31002e06/bin-2019/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-08 10:43:01,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:43:01,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:43:01,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:43:01,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:43:01,731 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 10:43:01,732 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:43:01,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 10:43:01,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 10:43:01,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 10:43:01,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 10:43:01,734 INFO L87 Difference]: Start difference. First operand 7637 states and 24730 transitions. Second operand 5 states. [2018-12-08 10:43:01,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:43:01,844 INFO L93 Difference]: Finished difference Result 11390 states and 37095 transitions. [2018-12-08 10:43:01,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-08 10:43:01,845 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2018-12-08 10:43:01,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:43:01,859 INFO L225 Difference]: With dead ends: 11390 [2018-12-08 10:43:01,859 INFO L226 Difference]: Without dead ends: 10751 [2018-12-08 10:43:01,859 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-12-08 10:43:01,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10751 states. [2018-12-08 10:43:01,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10751 to 7322. [2018-12-08 10:43:01,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7322 states. [2018-12-08 10:43:02,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7322 states to 7322 states and 23826 transitions. [2018-12-08 10:43:02,008 INFO L78 Accepts]: Start accepts. Automaton has 7322 states and 23826 transitions. Word has length 38 [2018-12-08 10:43:02,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:43:02,008 INFO L480 AbstractCegarLoop]: Abstraction has 7322 states and 23826 transitions. [2018-12-08 10:43:02,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 10:43:02,009 INFO L276 IsEmpty]: Start isEmpty. Operand 7322 states and 23826 transitions. [2018-12-08 10:43:02,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-08 10:43:02,011 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:43:02,011 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:43:02,011 INFO L423 AbstractCegarLoop]: === Iteration 7 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 10:43:02,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:43:02,012 INFO L82 PathProgramCache]: Analyzing trace with hash 140136184, now seen corresponding path program 2 times [2018-12-08 10:43:02,012 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-08 10:43:02,012 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_809da793-6758-41f7-872a-129a31002e06/bin-2019/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-08 10:43:02,028 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-12-08 10:43:02,088 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-12-08 10:43:02,088 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2018-12-08 10:43:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 10:43:02,365 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-08 10:43:02,367 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:110) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:87) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.computeIcfgProgramExecution(IcfgProgramExecutionBuilder.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.getIcfgProgramExecution(IcfgProgramExecutionBuilder.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecution(TraceCheck.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:344) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) 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) [2018-12-08 10:43:02,372 INFO L168 Benchmark]: Toolchain (without parser) took 6109.80 ms. Allocated memory was 1.0 GB in the beginning and 1.9 GB in the end (delta: 839.9 MB). Free memory was 939.3 MB in the beginning and 1.4 GB in the end (delta: -449.2 MB). Peak memory consumption was 390.7 MB. Max. memory is 11.5 GB. [2018-12-08 10:43:02,375 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 10:43:02,376 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -178.7 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. [2018-12-08 10:43:02,377 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.49 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 10:43:02,378 INFO L168 Benchmark]: Boogie Preprocessor took 15.36 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 10:43:02,379 INFO L168 Benchmark]: RCFGBuilder took 192.78 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: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2018-12-08 10:43:02,380 INFO L168 Benchmark]: TraceAbstraction took 5571.84 ms. Allocated memory was 1.2 GB in the beginning and 1.9 GB in the end (delta: 695.7 MB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -295.3 MB). Peak memory consumption was 400.4 MB. Max. memory is 11.5 GB. [2018-12-08 10:43:02,390 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 300.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -178.7 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.49 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.36 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 192.78 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: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5571.84 ms. Allocated memory was 1.2 GB in the beginning and 1.9 GB in the end (delta: 695.7 MB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -295.3 MB). Peak memory consumption was 400.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...