./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 aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d08a0c73-4914-4567-884c-5d9b20627a6c/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d08a0c73-4914-4567-884c-5d9b20627a6c/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d08a0c73-4914-4567-884c-5d9b20627a6c/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d08a0c73-4914-4567-884c-5d9b20627a6c/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_d08a0c73-4914-4567-884c-5d9b20627a6c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d08a0c73-4914-4567-884c-5d9b20627a6c/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_d08a0c73-4914-4567-884c-5d9b20627a6c/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d08a0c73-4914-4567-884c-5d9b20627a6c/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d08a0c73-4914-4567-884c-5d9b20627a6c/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d08a0c73-4914-4567-884c-5d9b20627a6c/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_d08a0c73-4914-4567-884c-5d9b20627a6c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d08a0c73-4914-4567-884c-5d9b20627a6c/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-aa41828 [2018-11-23 05:36:00,966 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 05:36:00,967 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 05:36:00,974 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 05:36:00,974 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 05:36:00,975 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 05:36:00,975 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 05:36:00,977 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 05:36:00,978 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 05:36:00,978 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 05:36:00,979 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 05:36:00,979 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 05:36:00,980 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 05:36:00,981 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 05:36:00,981 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 05:36:00,982 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 05:36:00,983 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 05:36:00,984 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 05:36:00,985 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 05:36:00,986 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 05:36:00,987 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 05:36:00,988 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 05:36:00,990 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 05:36:00,990 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 05:36:00,990 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 05:36:00,991 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 05:36:00,991 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 05:36:00,992 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 05:36:00,992 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 05:36:00,993 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 05:36:00,993 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 05:36:00,994 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 05:36:00,994 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 05:36:00,994 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 05:36:00,995 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 05:36:00,996 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 05:36:00,996 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d08a0c73-4914-4567-884c-5d9b20627a6c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-23 05:36:01,005 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 05:36:01,006 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 05:36:01,006 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 05:36:01,006 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 05:36:01,007 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 05:36:01,007 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 05:36:01,007 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 05:36:01,007 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 05:36:01,007 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 05:36:01,008 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 05:36:01,008 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 05:36:01,008 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 05:36:01,008 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 05:36:01,008 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 05:36:01,008 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 05:36:01,008 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 05:36:01,008 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 05:36:01,008 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 05:36:01,009 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 05:36:01,009 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 05:36:01,009 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 05:36:01,009 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 05:36:01,009 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 05:36:01,009 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 05:36:01,009 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 05:36:01,010 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 05:36:01,010 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 05:36:01,010 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 05:36:01,010 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 05:36:01,010 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 05:36:01,010 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_d08a0c73-4914-4567-884c-5d9b20627a6c/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 [2018-11-23 05:36:01,036 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 05:36:01,044 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 05:36:01,046 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 05:36:01,047 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 05:36:01,047 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 05:36:01,047 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d08a0c73-4914-4567-884c-5d9b20627a6c/bin-2019/uautomizer/../../sv-benchmarks/c/pthread-atomic/read_write_lock_false-unreach-call.i [2018-11-23 05:36:01,083 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d08a0c73-4914-4567-884c-5d9b20627a6c/bin-2019/uautomizer/data/9e3431bfe/abe3ad4a2c91468baf25998c663b0eca/FLAG9a60b9aa8 [2018-11-23 05:36:01,520 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 05:36:01,521 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d08a0c73-4914-4567-884c-5d9b20627a6c/sv-benchmarks/c/pthread-atomic/read_write_lock_false-unreach-call.i [2018-11-23 05:36:01,528 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d08a0c73-4914-4567-884c-5d9b20627a6c/bin-2019/uautomizer/data/9e3431bfe/abe3ad4a2c91468baf25998c663b0eca/FLAG9a60b9aa8 [2018-11-23 05:36:01,540 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d08a0c73-4914-4567-884c-5d9b20627a6c/bin-2019/uautomizer/data/9e3431bfe/abe3ad4a2c91468baf25998c663b0eca [2018-11-23 05:36:01,542 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 05:36:01,543 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 05:36:01,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 05:36:01,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 05:36:01,547 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 05:36:01,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:36:01" (1/1) ... [2018-11-23 05:36:01,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@658711a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:36:01, skipping insertion in model container [2018-11-23 05:36:01,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:36:01" (1/1) ... [2018-11-23 05:36:01,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 05:36:01,588 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 05:36:01,839 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 05:36:01,849 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 05:36:01,924 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 05:36:01,957 INFO L195 MainTranslator]: Completed translation [2018-11-23 05:36:01,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:36:01 WrapperNode [2018-11-23 05:36:01,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 05:36:01,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 05:36:01,959 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 05:36:01,959 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 05:36:01,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:36:01" (1/1) ... [2018-11-23 05:36:01,975 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:36:01" (1/1) ... [2018-11-23 05:36:01,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 05:36:01,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 05:36:01,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 05:36:01,991 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 05:36:01,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:36:01" (1/1) ... [2018-11-23 05:36:01,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:36:01" (1/1) ... [2018-11-23 05:36:01,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:36:01" (1/1) ... [2018-11-23 05:36:01,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:36:01" (1/1) ... [2018-11-23 05:36:02,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:36:01" (1/1) ... [2018-11-23 05:36:02,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:36:01" (1/1) ... [2018-11-23 05:36:02,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:36:01" (1/1) ... [2018-11-23 05:36:02,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 05:36:02,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 05:36:02,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 05:36:02,005 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 05:36:02,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:36:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d08a0c73-4914-4567-884c-5d9b20627a6c/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 05:36:02,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 05:36:02,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-23 05:36:02,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-23 05:36:02,045 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2018-11-23 05:36:02,045 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2018-11-23 05:36:02,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 05:36:02,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 05:36:02,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 05:36:02,046 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2018-11-23 05:36:02,046 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2018-11-23 05:36:02,047 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-11-23 05:36:02,119 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_read_lock_returnLabel [2018-11-23 05:36:02,226 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_write_lock_returnLabel [2018-11-23 05:36:02,243 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 05:36:02,243 INFO L280 CfgBuilder]: Removed 8 assue(true) statements. [2018-11-23 05:36:02,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:36:02 BoogieIcfgContainer [2018-11-23 05:36:02,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 05:36:02,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 05:36:02,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 05:36:02,247 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 05:36:02,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:36:01" (1/3) ... [2018-11-23 05:36:02,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43bab556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:36:02, skipping insertion in model container [2018-11-23 05:36:02,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:36:01" (2/3) ... [2018-11-23 05:36:02,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43bab556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:36:02, skipping insertion in model container [2018-11-23 05:36:02,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:36:02" (3/3) ... [2018-11-23 05:36:02,250 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock_false-unreach-call.i [2018-11-23 05:36:02,274 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,274 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,274 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,274 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,275 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,275 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,275 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,275 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,275 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,276 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,276 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,276 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,276 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,276 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,276 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,276 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,277 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,277 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,277 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,277 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,277 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,277 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,277 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,278 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,278 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,278 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,278 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,278 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,278 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,278 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,279 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,279 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,279 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,279 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:02,314 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-11-23 05:36:02,314 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 05:36:02,320 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-23 05:36:02,329 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-23 05:36:02,347 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 05:36:02,347 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 05:36:02,347 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 05:36:02,348 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 05:36:02,348 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 05:36:02,348 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 05:36:02,348 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 05:36:02,348 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 05:36:02,348 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 05:36:02,356 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84places, 93 transitions [2018-11-23 05:36:04,035 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26397 states. [2018-11-23 05:36:04,037 INFO L276 IsEmpty]: Start isEmpty. Operand 26397 states. [2018-11-23 05:36:04,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-23 05:36:04,044 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:36:04,045 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:36:04,046 INFO L423 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:36:04,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:36:04,050 INFO L82 PathProgramCache]: Analyzing trace with hash 563310493, now seen corresponding path program 1 times [2018-11-23 05:36:04,051 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:36:04,051 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:36:04,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:36:04,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:36:04,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:36:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:36:04,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:36:04,207 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:36:04,207 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 05:36:04,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 05:36:04,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 05:36:04,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 05:36:04,219 INFO L87 Difference]: Start difference. First operand 26397 states. Second operand 4 states. [2018-11-23 05:36:04,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:36:04,667 INFO L93 Difference]: Finished difference Result 52906 states and 202299 transitions. [2018-11-23 05:36:04,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 05:36:04,669 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-23 05:36:04,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:36:04,828 INFO L225 Difference]: With dead ends: 52906 [2018-11-23 05:36:04,828 INFO L226 Difference]: Without dead ends: 36824 [2018-11-23 05:36:04,829 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-23 05:36:04,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36824 states. [2018-11-23 05:36:05,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36824 to 22832. [2018-11-23 05:36:05,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22832 states. [2018-11-23 05:36:05,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22832 states to 22832 states and 87504 transitions. [2018-11-23 05:36:05,632 INFO L78 Accepts]: Start accepts. Automaton has 22832 states and 87504 transitions. Word has length 23 [2018-11-23 05:36:05,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:36:05,632 INFO L480 AbstractCegarLoop]: Abstraction has 22832 states and 87504 transitions. [2018-11-23 05:36:05,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 05:36:05,632 INFO L276 IsEmpty]: Start isEmpty. Operand 22832 states and 87504 transitions. [2018-11-23 05:36:05,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-23 05:36:05,634 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:36:05,635 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:36:05,635 INFO L423 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:36:05,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:36:05,635 INFO L82 PathProgramCache]: Analyzing trace with hash 175754366, now seen corresponding path program 1 times [2018-11-23 05:36:05,635 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:36:05,636 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:36:05,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:36:05,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:36:05,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:36:05,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:36:05,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:36:05,706 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:36:05,706 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 05:36:05,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 05:36:05,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 05:36:05,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 05:36:05,708 INFO L87 Difference]: Start difference. First operand 22832 states and 87504 transitions. Second operand 4 states. [2018-11-23 05:36:05,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:36:05,991 INFO L93 Difference]: Finished difference Result 36860 states and 131462 transitions. [2018-11-23 05:36:05,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 05:36:05,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-11-23 05:36:05,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:36:06,100 INFO L225 Difference]: With dead ends: 36860 [2018-11-23 05:36:06,100 INFO L226 Difference]: Without dead ends: 36500 [2018-11-23 05:36:06,101 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 05:36:06,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36500 states. [2018-11-23 05:36:06,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36500 to 24815. [2018-11-23 05:36:06,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24815 states. [2018-11-23 05:36:06,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24815 states to 24815 states and 89636 transitions. [2018-11-23 05:36:06,940 INFO L78 Accepts]: Start accepts. Automaton has 24815 states and 89636 transitions. Word has length 25 [2018-11-23 05:36:06,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:36:06,940 INFO L480 AbstractCegarLoop]: Abstraction has 24815 states and 89636 transitions. [2018-11-23 05:36:06,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 05:36:06,940 INFO L276 IsEmpty]: Start isEmpty. Operand 24815 states and 89636 transitions. [2018-11-23 05:36:06,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-23 05:36:06,942 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:36:06,942 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:36:06,942 INFO L423 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:36:06,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:36:06,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1318827774, now seen corresponding path program 2 times [2018-11-23 05:36:06,943 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:36:06,943 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:36:06,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:36:06,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:36:06,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:36:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:36:07,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:36:07,016 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:36:07,016 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 05:36:07,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 05:36:07,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 05:36:07,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-23 05:36:07,017 INFO L87 Difference]: Start difference. First operand 24815 states and 89636 transitions. Second operand 5 states. [2018-11-23 05:36:07,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:36:07,136 INFO L93 Difference]: Finished difference Result 14369 states and 47935 transitions. [2018-11-23 05:36:07,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 05:36:07,136 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-11-23 05:36:07,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:36:07,181 INFO L225 Difference]: With dead ends: 14369 [2018-11-23 05:36:07,181 INFO L226 Difference]: Without dead ends: 13889 [2018-11-23 05:36:07,182 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-23 05:36:07,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13889 states. [2018-11-23 05:36:07,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13889 to 13889. [2018-11-23 05:36:07,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13889 states. [2018-11-23 05:36:07,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13889 states to 13889 states and 46343 transitions. [2018-11-23 05:36:07,623 INFO L78 Accepts]: Start accepts. Automaton has 13889 states and 46343 transitions. Word has length 25 [2018-11-23 05:36:07,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:36:07,623 INFO L480 AbstractCegarLoop]: Abstraction has 13889 states and 46343 transitions. [2018-11-23 05:36:07,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 05:36:07,623 INFO L276 IsEmpty]: Start isEmpty. Operand 13889 states and 46343 transitions. [2018-11-23 05:36:07,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-23 05:36:07,625 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:36:07,626 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:36:07,626 INFO L423 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:36:07,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:36:07,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1891005508, now seen corresponding path program 1 times [2018-11-23 05:36:07,626 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:36:07,626 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:36:07,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:36:07,628 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 05:36:07,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:36:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:36:07,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:36:07,656 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:36:07,656 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 05:36:07,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 05:36:07,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 05:36:07,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 05:36:07,657 INFO L87 Difference]: Start difference. First operand 13889 states and 46343 transitions. Second operand 4 states. [2018-11-23 05:36:07,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:36:07,754 INFO L93 Difference]: Finished difference Result 14756 states and 48986 transitions. [2018-11-23 05:36:07,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 05:36:07,755 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-11-23 05:36:07,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:36:07,770 INFO L225 Difference]: With dead ends: 14756 [2018-11-23 05:36:07,770 INFO L226 Difference]: Without dead ends: 8996 [2018-11-23 05:36:07,770 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-23 05:36:07,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8996 states. [2018-11-23 05:36:07,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8996 to 7637. [2018-11-23 05:36:07,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7637 states. [2018-11-23 05:36:07,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7637 states to 7637 states and 24730 transitions. [2018-11-23 05:36:07,915 INFO L78 Accepts]: Start accepts. Automaton has 7637 states and 24730 transitions. Word has length 29 [2018-11-23 05:36:07,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:36:07,916 INFO L480 AbstractCegarLoop]: Abstraction has 7637 states and 24730 transitions. [2018-11-23 05:36:07,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 05:36:07,916 INFO L276 IsEmpty]: Start isEmpty. Operand 7637 states and 24730 transitions. [2018-11-23 05:36:07,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-23 05:36:07,921 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:36:07,921 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] [2018-11-23 05:36:07,921 INFO L423 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:36:07,921 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:36:07,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1715420402, now seen corresponding path program 1 times [2018-11-23 05:36:07,922 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:36:07,922 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:36:07,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:36:07,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:36:07,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:36:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:36:07,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:36:07,987 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:36:07,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-23 05:36:07,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 05:36:07,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 05:36:07,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 05:36:07,988 INFO L87 Difference]: Start difference. First operand 7637 states and 24730 transitions. Second operand 6 states. [2018-11-23 05:36:08,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:36:08,088 INFO L93 Difference]: Finished difference Result 8537 states and 27535 transitions. [2018-11-23 05:36:08,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 05:36:08,089 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2018-11-23 05:36:08,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:36:08,098 INFO L225 Difference]: With dead ends: 8537 [2018-11-23 05:36:08,098 INFO L226 Difference]: Without dead ends: 7898 [2018-11-23 05:36:08,099 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 [2018-11-23 05:36:08,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7898 states. [2018-11-23 05:36:08,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7898 to 7322. [2018-11-23 05:36:08,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7322 states. [2018-11-23 05:36:08,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7322 states to 7322 states and 23826 transitions. [2018-11-23 05:36:08,213 INFO L78 Accepts]: Start accepts. Automaton has 7322 states and 23826 transitions. Word has length 38 [2018-11-23 05:36:08,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:36:08,213 INFO L480 AbstractCegarLoop]: Abstraction has 7322 states and 23826 transitions. [2018-11-23 05:36:08,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 05:36:08,213 INFO L276 IsEmpty]: Start isEmpty. Operand 7322 states and 23826 transitions. [2018-11-23 05:36:08,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-23 05:36:08,218 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:36:08,218 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] [2018-11-23 05:36:08,218 INFO L423 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:36:08,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:36:08,218 INFO L82 PathProgramCache]: Analyzing trace with hash 140136184, now seen corresponding path program 2 times [2018-11-23 05:36:08,218 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:36:08,218 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:36:08,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:36:08,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:36:08,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:36:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 05:36:08,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 05:36:08,260 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) [2018-11-23 05:36:08,262 INFO L168 Benchmark]: Toolchain (without parser) took 6719.99 ms. Allocated memory was 1.0 GB in the beginning and 1.9 GB in the end (delta: 844.1 MB). Free memory was 955.8 MB in the beginning and 1.1 GB in the end (delta: -116.1 MB). Peak memory consumption was 728.0 MB. Max. memory is 11.5 GB. [2018-11-23 05:36:08,264 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 05:36:08,264 INFO L168 Benchmark]: CACSL2BoogieTranslator took 414.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 955.8 MB in the beginning and 1.1 GB in the end (delta: -181.9 MB). Peak memory consumption was 34.3 MB. Max. memory is 11.5 GB. [2018-11-23 05:36:08,269 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-23 05:36:08,269 INFO L168 Benchmark]: Boogie Preprocessor took 14.42 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 05:36:08,269 INFO L168 Benchmark]: RCFGBuilder took 238.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 11.5 GB. [2018-11-23 05:36:08,270 INFO L168 Benchmark]: TraceAbstraction took 6017.63 ms. Allocated memory was 1.2 GB in the beginning and 1.9 GB in the end (delta: 687.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.3 MB). Peak memory consumption was 718.7 MB. Max. memory is 11.5 GB. [2018-11-23 05:36:08,272 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 414.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 955.8 MB in the beginning and 1.1 GB in the end (delta: -181.9 MB). Peak memory consumption was 34.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.42 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 238.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6017.63 ms. Allocated memory was 1.2 GB in the beginning and 1.9 GB in the end (delta: 687.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.3 MB). Peak memory consumption was 718.7 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-aa41828 [2018-11-23 05:36:09,766 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 05:36:09,767 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 05:36:09,775 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 05:36:09,775 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 05:36:09,775 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 05:36:09,776 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 05:36:09,777 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 05:36:09,778 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 05:36:09,779 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 05:36:09,780 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 05:36:09,780 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 05:36:09,781 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 05:36:09,782 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 05:36:09,782 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 05:36:09,783 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 05:36:09,783 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 05:36:09,785 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 05:36:09,787 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 05:36:09,788 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 05:36:09,789 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 05:36:09,790 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 05:36:09,792 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 05:36:09,792 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 05:36:09,792 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 05:36:09,793 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 05:36:09,793 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 05:36:09,794 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 05:36:09,794 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 05:36:09,796 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 05:36:09,796 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 05:36:09,796 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 05:36:09,796 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 05:36:09,796 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 05:36:09,797 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 05:36:09,798 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 05:36:09,798 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d08a0c73-4914-4567-884c-5d9b20627a6c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-23 05:36:09,809 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 05:36:09,809 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 05:36:09,810 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 05:36:09,810 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 05:36:09,810 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 05:36:09,810 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 05:36:09,810 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 05:36:09,810 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 05:36:09,811 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 05:36:09,811 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 05:36:09,811 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 05:36:09,811 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 05:36:09,811 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 05:36:09,811 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 05:36:09,811 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-23 05:36:09,811 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-23 05:36:09,811 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 05:36:09,812 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 05:36:09,812 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 05:36:09,812 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 05:36:09,812 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 05:36:09,813 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 05:36:09,813 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 05:36:09,814 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 05:36:09,814 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 05:36:09,814 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 05:36:09,814 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 05:36:09,814 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 05:36:09,814 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-23 05:36:09,814 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 05:36:09,814 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-23 05:36:09,814 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-23 05:36:09,814 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_d08a0c73-4914-4567-884c-5d9b20627a6c/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 [2018-11-23 05:36:09,842 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 05:36:09,850 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 05:36:09,852 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 05:36:09,853 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 05:36:09,853 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 05:36:09,854 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d08a0c73-4914-4567-884c-5d9b20627a6c/bin-2019/uautomizer/../../sv-benchmarks/c/pthread-atomic/read_write_lock_false-unreach-call.i [2018-11-23 05:36:09,893 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d08a0c73-4914-4567-884c-5d9b20627a6c/bin-2019/uautomizer/data/b6ee83c7c/764050b9dc7e456d82cdeafc01443f15/FLAGdb6b66b38 [2018-11-23 05:36:10,341 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 05:36:10,342 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d08a0c73-4914-4567-884c-5d9b20627a6c/sv-benchmarks/c/pthread-atomic/read_write_lock_false-unreach-call.i [2018-11-23 05:36:10,352 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d08a0c73-4914-4567-884c-5d9b20627a6c/bin-2019/uautomizer/data/b6ee83c7c/764050b9dc7e456d82cdeafc01443f15/FLAGdb6b66b38 [2018-11-23 05:36:10,362 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d08a0c73-4914-4567-884c-5d9b20627a6c/bin-2019/uautomizer/data/b6ee83c7c/764050b9dc7e456d82cdeafc01443f15 [2018-11-23 05:36:10,364 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 05:36:10,365 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 05:36:10,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 05:36:10,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 05:36:10,368 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 05:36:10,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:36:10" (1/1) ... [2018-11-23 05:36:10,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb134ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:36:10, skipping insertion in model container [2018-11-23 05:36:10,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:36:10" (1/1) ... [2018-11-23 05:36:10,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 05:36:10,409 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 05:36:10,653 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 05:36:10,667 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 05:36:10,710 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 05:36:10,763 INFO L195 MainTranslator]: Completed translation [2018-11-23 05:36:10,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:36:10 WrapperNode [2018-11-23 05:36:10,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 05:36:10,764 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 05:36:10,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 05:36:10,765 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 05:36:10,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:36:10" (1/1) ... [2018-11-23 05:36:10,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:36:10" (1/1) ... [2018-11-23 05:36:10,854 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 05:36:10,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 05:36:10,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 05:36:10,854 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 05:36:10,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:36:10" (1/1) ... [2018-11-23 05:36:10,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:36:10" (1/1) ... [2018-11-23 05:36:10,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:36:10" (1/1) ... [2018-11-23 05:36:10,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:36:10" (1/1) ... [2018-11-23 05:36:10,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:36:10" (1/1) ... [2018-11-23 05:36:10,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:36:10" (1/1) ... [2018-11-23 05:36:10,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:36:10" (1/1) ... [2018-11-23 05:36:10,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 05:36:10,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 05:36:10,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 05:36:10,874 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 05:36:10,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:36:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d08a0c73-4914-4567-884c-5d9b20627a6c/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 05:36:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 05:36:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-23 05:36:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2018-11-23 05:36:10,911 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2018-11-23 05:36:10,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 05:36:10,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-23 05:36:10,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 05:36:10,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 05:36:10,911 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2018-11-23 05:36:10,911 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2018-11-23 05:36:10,912 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-11-23 05:36:10,999 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_read_lock_returnLabel [2018-11-23 05:36:11,148 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_write_lock_returnLabel [2018-11-23 05:36:11,161 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 05:36:11,161 INFO L280 CfgBuilder]: Removed 8 assue(true) statements. [2018-11-23 05:36:11,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:36:11 BoogieIcfgContainer [2018-11-23 05:36:11,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 05:36:11,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 05:36:11,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 05:36:11,166 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 05:36:11,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:36:10" (1/3) ... [2018-11-23 05:36:11,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322653f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:36:11, skipping insertion in model container [2018-11-23 05:36:11,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:36:10" (2/3) ... [2018-11-23 05:36:11,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322653f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:36:11, skipping insertion in model container [2018-11-23 05:36:11,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:36:11" (3/3) ... [2018-11-23 05:36:11,170 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock_false-unreach-call.i [2018-11-23 05:36:11,198 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,199 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,199 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,199 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,199 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,200 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,200 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,200 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,201 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,201 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,201 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,201 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,202 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,202 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,202 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,202 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,202 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,203 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,203 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,203 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,203 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,203 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,204 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,204 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,204 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,204 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,205 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,205 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,205 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,205 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,206 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,206 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,206 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,206 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 05:36:11,247 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-11-23 05:36:11,247 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 05:36:11,253 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-23 05:36:11,264 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-23 05:36:11,283 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 05:36:11,283 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 05:36:11,283 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 05:36:11,284 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 05:36:11,284 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 05:36:11,284 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 05:36:11,284 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 05:36:11,284 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 05:36:11,284 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 05:36:11,294 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84places, 93 transitions [2018-11-23 05:36:12,980 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26397 states. [2018-11-23 05:36:12,982 INFO L276 IsEmpty]: Start isEmpty. Operand 26397 states. [2018-11-23 05:36:12,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-23 05:36:12,989 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:36:12,990 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:36:12,992 INFO L423 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:36:12,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:36:12,998 INFO L82 PathProgramCache]: Analyzing trace with hash 563310493, now seen corresponding path program 1 times [2018-11-23 05:36:13,003 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 05:36:13,004 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d08a0c73-4914-4567-884c-5d9b20627a6c/bin-2019/uautomizer/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 05:36:13,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:36:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:36:13,072 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:36:13,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:36:13,118 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (2)] Exception during sending of exit command (exit): Broken pipe [2018-11-23 05:36:13,122 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:36:13,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 05:36:13,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 05:36:13,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 05:36:13,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 05:36:13,138 INFO L87 Difference]: Start difference. First operand 26397 states. Second operand 4 states. [2018-11-23 05:36:13,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:36:13,683 INFO L93 Difference]: Finished difference Result 52906 states and 202299 transitions. [2018-11-23 05:36:13,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 05:36:13,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-23 05:36:13,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:36:13,878 INFO L225 Difference]: With dead ends: 52906 [2018-11-23 05:36:13,878 INFO L226 Difference]: Without dead ends: 36824 [2018-11-23 05:36:13,879 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 [2018-11-23 05:36:14,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36824 states. [2018-11-23 05:36:14,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36824 to 22832. [2018-11-23 05:36:14,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22832 states. [2018-11-23 05:36:14,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22832 states to 22832 states and 87504 transitions. [2018-11-23 05:36:14,841 INFO L78 Accepts]: Start accepts. Automaton has 22832 states and 87504 transitions. Word has length 23 [2018-11-23 05:36:14,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:36:14,841 INFO L480 AbstractCegarLoop]: Abstraction has 22832 states and 87504 transitions. [2018-11-23 05:36:14,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 05:36:14,841 INFO L276 IsEmpty]: Start isEmpty. Operand 22832 states and 87504 transitions. [2018-11-23 05:36:14,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-23 05:36:14,843 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:36:14,843 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:36:14,843 INFO L423 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:36:14,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:36:14,844 INFO L82 PathProgramCache]: Analyzing trace with hash 175754366, now seen corresponding path program 1 times [2018-11-23 05:36:14,844 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 05:36:14,844 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d08a0c73-4914-4567-884c-5d9b20627a6c/bin-2019/uautomizer/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 05:36:14,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:36:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:36:14,888 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:36:14,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:36:14,925 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 05:36:14,926 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:36:14,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 05:36:14,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 05:36:14,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 05:36:14,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 05:36:14,929 INFO L87 Difference]: Start difference. First operand 22832 states and 87504 transitions. Second operand 4 states. [2018-11-23 05:36:15,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:36:15,257 INFO L93 Difference]: Finished difference Result 44834 states and 165805 transitions. [2018-11-23 05:36:15,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 05:36:15,258 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-11-23 05:36:15,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:36:15,360 INFO L225 Difference]: With dead ends: 44834 [2018-11-23 05:36:15,361 INFO L226 Difference]: Without dead ends: 44474 [2018-11-23 05:36:15,361 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 [2018-11-23 05:36:15,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44474 states. [2018-11-23 05:36:15,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44474 to 24815. [2018-11-23 05:36:15,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24815 states. [2018-11-23 05:36:16,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24815 states to 24815 states and 92018 transitions. [2018-11-23 05:36:16,018 INFO L78 Accepts]: Start accepts. Automaton has 24815 states and 92018 transitions. Word has length 25 [2018-11-23 05:36:16,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:36:16,018 INFO L480 AbstractCegarLoop]: Abstraction has 24815 states and 92018 transitions. [2018-11-23 05:36:16,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 05:36:16,018 INFO L276 IsEmpty]: Start isEmpty. Operand 24815 states and 92018 transitions. [2018-11-23 05:36:16,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-23 05:36:16,020 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:36:16,020 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:36:16,020 INFO L423 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:36:16,020 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:36:16,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1318827774, now seen corresponding path program 2 times [2018-11-23 05:36:16,020 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 05:36:16,021 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d08a0c73-4914-4567-884c-5d9b20627a6c/bin-2019/uautomizer/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 05:36:16,034 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-23 05:36:16,050 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-23 05:36:16,050 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 05:36:16,053 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:36:16,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:36:16,061 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 05:36:16,070 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:36:16,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 05:36:16,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 05:36:16,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 05:36:16,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 05:36:16,070 INFO L87 Difference]: Start difference. First operand 24815 states and 92018 transitions. Second operand 3 states. [2018-11-23 05:36:16,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:36:16,152 INFO L93 Difference]: Finished difference Result 18827 states and 66927 transitions. [2018-11-23 05:36:16,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 05:36:16,153 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-11-23 05:36:16,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:36:16,184 INFO L225 Difference]: With dead ends: 18827 [2018-11-23 05:36:16,184 INFO L226 Difference]: Without dead ends: 18347 [2018-11-23 05:36:16,184 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 [2018-11-23 05:36:16,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18347 states. [2018-11-23 05:36:16,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18347 to 18347. [2018-11-23 05:36:16,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18347 states. [2018-11-23 05:36:16,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18347 states to 18347 states and 65335 transitions. [2018-11-23 05:36:16,637 INFO L78 Accepts]: Start accepts. Automaton has 18347 states and 65335 transitions. Word has length 25 [2018-11-23 05:36:16,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:36:16,637 INFO L480 AbstractCegarLoop]: Abstraction has 18347 states and 65335 transitions. [2018-11-23 05:36:16,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 05:36:16,638 INFO L276 IsEmpty]: Start isEmpty. Operand 18347 states and 65335 transitions. [2018-11-23 05:36:16,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-23 05:36:16,640 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:36:16,640 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:36:16,640 INFO L423 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:36:16,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:36:16,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1891005508, now seen corresponding path program 1 times [2018-11-23 05:36:16,641 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 05:36:16,641 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d08a0c73-4914-4567-884c-5d9b20627a6c/bin-2019/uautomizer/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 05:36:16,656 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 05:36:16,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:36:16,673 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:36:16,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:36:16,684 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 05:36:16,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:36:16,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 05:36:16,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 05:36:16,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 05:36:16,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 05:36:16,686 INFO L87 Difference]: Start difference. First operand 18347 states and 65335 transitions. Second operand 4 states. [2018-11-23 05:36:16,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:36:16,851 INFO L93 Difference]: Finished difference Result 32444 states and 115032 transitions. [2018-11-23 05:36:16,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 05:36:16,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-11-23 05:36:16,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:36:16,896 INFO L225 Difference]: With dead ends: 32444 [2018-11-23 05:36:16,896 INFO L226 Difference]: Without dead ends: 25844 [2018-11-23 05:36:16,897 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 [2018-11-23 05:36:16,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25844 states. [2018-11-23 05:36:17,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25844 to 15197. [2018-11-23 05:36:17,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15197 states. [2018-11-23 05:36:17,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15197 states to 15197 states and 54478 transitions. [2018-11-23 05:36:17,158 INFO L78 Accepts]: Start accepts. Automaton has 15197 states and 54478 transitions. Word has length 29 [2018-11-23 05:36:17,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:36:17,159 INFO L480 AbstractCegarLoop]: Abstraction has 15197 states and 54478 transitions. [2018-11-23 05:36:17,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 05:36:17,159 INFO L276 IsEmpty]: Start isEmpty. Operand 15197 states and 54478 transitions. [2018-11-23 05:36:17,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-23 05:36:17,161 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:36:17,161 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] [2018-11-23 05:36:17,162 INFO L423 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:36:17,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:36:17,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1356359066, now seen corresponding path program 1 times [2018-11-23 05:36:17,162 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 05:36:17,162 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d08a0c73-4914-4567-884c-5d9b20627a6c/bin-2019/uautomizer/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 05:36:17,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:36:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:36:17,195 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:36:17,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:36:17,219 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 05:36:17,221 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:36:17,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 05:36:17,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 05:36:17,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 05:36:17,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 05:36:17,222 INFO L87 Difference]: Start difference. First operand 15197 states and 54478 transitions. Second operand 5 states. [2018-11-23 05:36:17,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:36:17,293 INFO L93 Difference]: Finished difference Result 8213 states and 26746 transitions. [2018-11-23 05:36:17,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 05:36:17,294 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2018-11-23 05:36:17,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:36:17,303 INFO L225 Difference]: With dead ends: 8213 [2018-11-23 05:36:17,304 INFO L226 Difference]: Without dead ends: 8213 [2018-11-23 05:36:17,304 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 [2018-11-23 05:36:17,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8213 states. [2018-11-23 05:36:17,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8213 to 7637. [2018-11-23 05:36:17,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7637 states. [2018-11-23 05:36:17,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7637 states to 7637 states and 24730 transitions. [2018-11-23 05:36:17,405 INFO L78 Accepts]: Start accepts. Automaton has 7637 states and 24730 transitions. Word has length 33 [2018-11-23 05:36:17,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:36:17,405 INFO L480 AbstractCegarLoop]: Abstraction has 7637 states and 24730 transitions. [2018-11-23 05:36:17,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 05:36:17,405 INFO L276 IsEmpty]: Start isEmpty. Operand 7637 states and 24730 transitions. [2018-11-23 05:36:17,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-23 05:36:17,410 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:36:17,410 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] [2018-11-23 05:36:17,410 INFO L423 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:36:17,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:36:17,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1715420402, now seen corresponding path program 1 times [2018-11-23 05:36:17,411 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 05:36:17,411 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d08a0c73-4914-4567-884c-5d9b20627a6c/bin-2019/uautomizer/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 05:36:17,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:36:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:36:17,466 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:36:17,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:36:17,486 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 05:36:17,492 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:36:17,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 05:36:17,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 05:36:17,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 05:36:17,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 05:36:17,493 INFO L87 Difference]: Start difference. First operand 7637 states and 24730 transitions. Second operand 5 states. [2018-11-23 05:36:17,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:36:17,584 INFO L93 Difference]: Finished difference Result 11390 states and 37095 transitions. [2018-11-23 05:36:17,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 05:36:17,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2018-11-23 05:36:17,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:36:17,600 INFO L225 Difference]: With dead ends: 11390 [2018-11-23 05:36:17,600 INFO L226 Difference]: Without dead ends: 10751 [2018-11-23 05:36:17,601 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 [2018-11-23 05:36:17,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10751 states. [2018-11-23 05:36:17,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10751 to 7322. [2018-11-23 05:36:17,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7322 states. [2018-11-23 05:36:17,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7322 states to 7322 states and 23826 transitions. [2018-11-23 05:36:17,726 INFO L78 Accepts]: Start accepts. Automaton has 7322 states and 23826 transitions. Word has length 38 [2018-11-23 05:36:17,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:36:17,727 INFO L480 AbstractCegarLoop]: Abstraction has 7322 states and 23826 transitions. [2018-11-23 05:36:17,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 05:36:17,727 INFO L276 IsEmpty]: Start isEmpty. Operand 7322 states and 23826 transitions. [2018-11-23 05:36:17,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-23 05:36:17,730 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:36:17,730 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] [2018-11-23 05:36:17,731 INFO L423 AbstractCegarLoop]: === Iteration 7 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:36:17,731 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:36:17,731 INFO L82 PathProgramCache]: Analyzing trace with hash 140136184, now seen corresponding path program 2 times [2018-11-23 05:36:17,731 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 05:36:17,731 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d08a0c73-4914-4567-884c-5d9b20627a6c/bin-2019/uautomizer/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 05:36:17,748 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-23 05:36:17,798 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-23 05:36:17,798 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2018-11-23 05:36:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 05:36:18,162 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 05:36:18,162 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) [2018-11-23 05:36:18,164 INFO L168 Benchmark]: Toolchain (without parser) took 7799.94 ms. Allocated memory was 1.0 GB in the beginning and 1.9 GB in the end (delta: 862.5 MB). Free memory was 945.4 MB in the beginning and 1.4 GB in the end (delta: -444.7 MB). Peak memory consumption was 1.2 GB. Max. memory is 11.5 GB. [2018-11-23 05:36:18,165 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 05:36:18,166 INFO L168 Benchmark]: CACSL2BoogieTranslator took 398.43 ms. Allocated memory is still 1.0 GB. Free memory was 945.4 MB in the beginning and 913.2 MB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2018-11-23 05:36:18,166 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 913.2 MB in the beginning and 1.1 GB in the end (delta: -217.8 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. [2018-11-23 05:36:18,166 INFO L168 Benchmark]: Boogie Preprocessor took 19.26 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 05:36:18,166 INFO L168 Benchmark]: RCFGBuilder took 288.07 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: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. [2018-11-23 05:36:18,167 INFO L168 Benchmark]: TraceAbstraction took 7001.62 ms. Allocated memory was 1.2 GB in the beginning and 1.9 GB in the end (delta: 718.3 MB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -285.6 MB). Peak memory consumption was 1.3 GB. Max. memory is 11.5 GB. [2018-11-23 05:36:18,169 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 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 398.43 ms. Allocated memory is still 1.0 GB. Free memory was 945.4 MB in the beginning and 913.2 MB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 89.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 913.2 MB in the beginning and 1.1 GB in the end (delta: -217.8 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.26 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 288.07 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: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7001.62 ms. Allocated memory was 1.2 GB in the beginning and 1.9 GB in the end (delta: 718.3 MB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -285.6 MB). Peak memory consumption was 1.3 GB. 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...