./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock_false-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7a44ec3fe14113a3aba74e37fda369041ad122ce ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 11:23:54,438 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 11:23:54,439 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 11:23:54,445 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 11:23:54,445 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 11:23:54,445 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 11:23:54,446 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 11:23:54,447 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 11:23:54,448 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 11:23:54,448 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 11:23:54,449 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 11:23:54,449 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 11:23:54,449 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 11:23:54,450 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 11:23:54,451 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 11:23:54,451 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 11:23:54,451 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 11:23:54,452 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 11:23:54,453 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 11:23:54,454 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 11:23:54,455 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 11:23:54,455 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 11:23:54,456 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 11:23:54,456 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 11:23:54,457 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 11:23:54,457 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 11:23:54,458 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 11:23:54,458 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 11:23:54,458 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 11:23:54,459 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 11:23:54,459 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 11:23:54,459 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 11:23:54,460 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 11:23:54,460 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 11:23:54,460 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 11:23:54,461 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 11:23:54,461 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 11:23:54,468 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 11:23:54,468 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 11:23:54,469 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 11:23:54,469 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 11:23:54,469 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 11:23:54,469 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 11:23:54,469 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 11:23:54,469 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 11:23:54,469 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 11:23:54,469 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 11:23:54,470 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 11:23:54,470 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 11:23:54,470 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 11:23:54,470 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 11:23:54,470 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 11:23:54,471 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 11:23:54,471 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 11:23:54,471 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 11:23:54,471 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 11:23:54,471 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 11:23:54,471 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 11:23:54,471 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 11:23:54,471 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 11:23:54,472 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 11:23:54,472 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 11:23:54,472 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 11:23:54,472 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 11:23:54,472 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 11:23:54,472 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 11:23:54,472 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 11:23:54,472 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 11:23:54,473 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 11:23:54,473 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 11:23:54,473 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 11:23:54,473 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 11:23:54,473 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 11:23:54,473 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a44ec3fe14113a3aba74e37fda369041ad122ce [2018-12-09 11:23:54,490 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 11:23:54,497 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 11:23:54,499 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 11:23:54,499 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 11:23:54,500 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 11:23:54,500 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan/../../sv-benchmarks/c/pthread-atomic/read_write_lock_false-unreach-call.i [2018-12-09 11:23:54,534 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan/data/1d121b982/73a5e48b32304b288c4cbc12f0aaed02/FLAG060f7fa45 [2018-12-09 11:23:54,977 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 11:23:54,978 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/sv-benchmarks/c/pthread-atomic/read_write_lock_false-unreach-call.i [2018-12-09 11:23:54,985 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan/data/1d121b982/73a5e48b32304b288c4cbc12f0aaed02/FLAG060f7fa45 [2018-12-09 11:23:54,992 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan/data/1d121b982/73a5e48b32304b288c4cbc12f0aaed02 [2018-12-09 11:23:54,994 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 11:23:54,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 11:23:54,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 11:23:54,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 11:23:54,998 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 11:23:54,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:23:54" (1/1) ... [2018-12-09 11:23:55,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7300e139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:23:54, skipping insertion in model container [2018-12-09 11:23:55,000 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:23:54" (1/1) ... [2018-12-09 11:23:55,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 11:23:55,023 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 11:23:55,190 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 11:23:55,199 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 11:23:55,261 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 11:23:55,289 INFO L195 MainTranslator]: Completed translation [2018-12-09 11:23:55,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:23:55 WrapperNode [2018-12-09 11:23:55,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 11:23:55,290 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 11:23:55,290 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 11:23:55,290 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 11:23:55,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:23:55" (1/1) ... [2018-12-09 11:23:55,304 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:23:55" (1/1) ... [2018-12-09 11:23:55,318 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 11:23:55,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 11:23:55,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 11:23:55,318 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 11:23:55,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:23:55" (1/1) ... [2018-12-09 11:23:55,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:23:55" (1/1) ... [2018-12-09 11:23:55,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:23:55" (1/1) ... [2018-12-09 11:23:55,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:23:55" (1/1) ... [2018-12-09 11:23:55,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:23:55" (1/1) ... [2018-12-09 11:23:55,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:23:55" (1/1) ... [2018-12-09 11:23:55,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:23:55" (1/1) ... [2018-12-09 11:23:55,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 11:23:55,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 11:23:55,332 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 11:23:55,332 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 11:23:55,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:23:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 11:23:55,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 11:23:55,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 11:23:55,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 11:23:55,367 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2018-12-09 11:23:55,367 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2018-12-09 11:23:55,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 11:23:55,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 11:23:55,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 11:23:55,367 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2018-12-09 11:23:55,367 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2018-12-09 11:23:55,368 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-09 11:23:55,447 INFO L1421 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_read_lock_returnLabel [2018-12-09 11:23:55,529 INFO L1421 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_write_lock_returnLabel [2018-12-09 11:23:55,534 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 11:23:55,534 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-09 11:23:55,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:23:55 BoogieIcfgContainer [2018-12-09 11:23:55,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 11:23:55,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 11:23:55,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 11:23:55,537 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 11:23:55,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 11:23:54" (1/3) ... [2018-12-09 11:23:55,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28beab7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:23:55, skipping insertion in model container [2018-12-09 11:23:55,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:23:55" (2/3) ... [2018-12-09 11:23:55,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28beab7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:23:55, skipping insertion in model container [2018-12-09 11:23:55,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:23:55" (3/3) ... [2018-12-09 11:23:55,539 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock_false-unreach-call.i [2018-12-09 11:23:55,562 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,562 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,562 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,562 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,562 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,563 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,563 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,563 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,563 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,564 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,564 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,564 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,564 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,564 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,564 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,565 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,565 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,565 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,565 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,566 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,566 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,566 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,566 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,566 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,567 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,567 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,567 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,567 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,567 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,568 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,568 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,568 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,568 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,568 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:23:55,595 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-09 11:23:55,595 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 11:23:55,602 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-09 11:23:55,612 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-09 11:23:55,627 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 11:23:55,627 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 11:23:55,628 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 11:23:55,628 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 11:23:55,628 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 11:23:55,628 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 11:23:55,628 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 11:23:55,628 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 11:23:55,637 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84places, 93 transitions [2018-12-09 11:23:56,721 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26397 states. [2018-12-09 11:23:56,723 INFO L276 IsEmpty]: Start isEmpty. Operand 26397 states. [2018-12-09 11:23:56,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 11:23:56,728 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:23:56,728 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:23:56,730 INFO L423 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:23:56,735 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:23:56,735 INFO L82 PathProgramCache]: Analyzing trace with hash 563310493, now seen corresponding path program 1 times [2018-12-09 11:23:56,736 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:23:56,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:23:56,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:23:56,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:23:56,771 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:23:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:23:56,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:23:56,866 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:23:56,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 11:23:56,866 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 11:23:56,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 11:23:56,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 11:23:56,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 11:23:56,878 INFO L87 Difference]: Start difference. First operand 26397 states. Second operand 4 states. [2018-12-09 11:23:57,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:23:57,222 INFO L93 Difference]: Finished difference Result 52906 states and 202299 transitions. [2018-12-09 11:23:57,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 11:23:57,223 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-12-09 11:23:57,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:23:57,349 INFO L225 Difference]: With dead ends: 52906 [2018-12-09 11:23:57,349 INFO L226 Difference]: Without dead ends: 36824 [2018-12-09 11:23:57,351 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-09 11:23:57,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36824 states. [2018-12-09 11:23:57,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36824 to 22832. [2018-12-09 11:23:57,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22832 states. [2018-12-09 11:23:58,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22832 states to 22832 states and 87504 transitions. [2018-12-09 11:23:58,017 INFO L78 Accepts]: Start accepts. Automaton has 22832 states and 87504 transitions. Word has length 23 [2018-12-09 11:23:58,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:23:58,017 INFO L480 AbstractCegarLoop]: Abstraction has 22832 states and 87504 transitions. [2018-12-09 11:23:58,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 11:23:58,018 INFO L276 IsEmpty]: Start isEmpty. Operand 22832 states and 87504 transitions. [2018-12-09 11:23:58,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-09 11:23:58,020 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:23:58,020 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] [2018-12-09 11:23:58,020 INFO L423 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:23:58,020 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:23:58,021 INFO L82 PathProgramCache]: Analyzing trace with hash 175754366, now seen corresponding path program 1 times [2018-12-09 11:23:58,021 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:23:58,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:23:58,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:23:58,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:23:58,026 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:23:58,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:23:58,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:23:58,080 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:23:58,081 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 11:23:58,081 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 11:23:58,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 11:23:58,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 11:23:58,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 11:23:58,082 INFO L87 Difference]: Start difference. First operand 22832 states and 87504 transitions. Second operand 4 states. [2018-12-09 11:23:58,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:23:58,290 INFO L93 Difference]: Finished difference Result 36860 states and 131462 transitions. [2018-12-09 11:23:58,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 11:23:58,290 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-12-09 11:23:58,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:23:58,381 INFO L225 Difference]: With dead ends: 36860 [2018-12-09 11:23:58,381 INFO L226 Difference]: Without dead ends: 36500 [2018-12-09 11:23:58,381 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 11:23:58,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36500 states. [2018-12-09 11:23:58,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36500 to 24815. [2018-12-09 11:23:58,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24815 states. [2018-12-09 11:23:58,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24815 states to 24815 states and 89636 transitions. [2018-12-09 11:23:58,843 INFO L78 Accepts]: Start accepts. Automaton has 24815 states and 89636 transitions. Word has length 25 [2018-12-09 11:23:58,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:23:58,843 INFO L480 AbstractCegarLoop]: Abstraction has 24815 states and 89636 transitions. [2018-12-09 11:23:58,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 11:23:58,843 INFO L276 IsEmpty]: Start isEmpty. Operand 24815 states and 89636 transitions. [2018-12-09 11:23:58,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-09 11:23:58,845 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:23:58,845 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:23:58,845 INFO L423 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:23:58,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:23:58,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1318827774, now seen corresponding path program 2 times [2018-12-09 11:23:58,845 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:23:58,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:23:58,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:23:58,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:23:58,848 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:23:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:23:58,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:23:58,884 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:23:58,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 11:23:58,884 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 11:23:58,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 11:23:58,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 11:23:58,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-09 11:23:58,885 INFO L87 Difference]: Start difference. First operand 24815 states and 89636 transitions. Second operand 5 states. [2018-12-09 11:23:58,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:23:58,949 INFO L93 Difference]: Finished difference Result 14369 states and 47935 transitions. [2018-12-09 11:23:58,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 11:23:58,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-12-09 11:23:58,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:23:58,967 INFO L225 Difference]: With dead ends: 14369 [2018-12-09 11:23:58,967 INFO L226 Difference]: Without dead ends: 13889 [2018-12-09 11:23:58,968 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-09 11:23:58,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13889 states. [2018-12-09 11:23:59,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13889 to 13889. [2018-12-09 11:23:59,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13889 states. [2018-12-09 11:23:59,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13889 states to 13889 states and 46343 transitions. [2018-12-09 11:23:59,206 INFO L78 Accepts]: Start accepts. Automaton has 13889 states and 46343 transitions. Word has length 25 [2018-12-09 11:23:59,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:23:59,206 INFO L480 AbstractCegarLoop]: Abstraction has 13889 states and 46343 transitions. [2018-12-09 11:23:59,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 11:23:59,207 INFO L276 IsEmpty]: Start isEmpty. Operand 13889 states and 46343 transitions. [2018-12-09 11:23:59,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-09 11:23:59,208 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:23:59,208 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:23:59,208 INFO L423 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:23:59,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:23:59,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1891005508, now seen corresponding path program 1 times [2018-12-09 11:23:59,208 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:23:59,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:23:59,210 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 11:23:59,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:23:59,210 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:23:59,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:23:59,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:23:59,229 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:23:59,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 11:23:59,229 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 11:23:59,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 11:23:59,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 11:23:59,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 11:23:59,230 INFO L87 Difference]: Start difference. First operand 13889 states and 46343 transitions. Second operand 4 states. [2018-12-09 11:23:59,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:23:59,301 INFO L93 Difference]: Finished difference Result 14756 states and 48986 transitions. [2018-12-09 11:23:59,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 11:23:59,301 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-12-09 11:23:59,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:23:59,311 INFO L225 Difference]: With dead ends: 14756 [2018-12-09 11:23:59,312 INFO L226 Difference]: Without dead ends: 8996 [2018-12-09 11:23:59,312 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-09 11:23:59,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8996 states. [2018-12-09 11:23:59,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8996 to 7637. [2018-12-09 11:23:59,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7637 states. [2018-12-09 11:23:59,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7637 states to 7637 states and 24730 transitions. [2018-12-09 11:23:59,400 INFO L78 Accepts]: Start accepts. Automaton has 7637 states and 24730 transitions. Word has length 29 [2018-12-09 11:23:59,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:23:59,401 INFO L480 AbstractCegarLoop]: Abstraction has 7637 states and 24730 transitions. [2018-12-09 11:23:59,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 11:23:59,401 INFO L276 IsEmpty]: Start isEmpty. Operand 7637 states and 24730 transitions. [2018-12-09 11:23:59,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-09 11:23:59,405 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:23:59,406 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:23:59,406 INFO L423 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:23:59,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:23:59,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1715420402, now seen corresponding path program 1 times [2018-12-09 11:23:59,406 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:23:59,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:23:59,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:23:59,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:23:59,409 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:23:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:23:59,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:23:59,456 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:23:59,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 11:23:59,457 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 11:23:59,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 11:23:59,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 11:23:59,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-09 11:23:59,457 INFO L87 Difference]: Start difference. First operand 7637 states and 24730 transitions. Second operand 6 states. [2018-12-09 11:23:59,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:23:59,525 INFO L93 Difference]: Finished difference Result 8537 states and 27535 transitions. [2018-12-09 11:23:59,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 11:23:59,526 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2018-12-09 11:23:59,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:23:59,535 INFO L225 Difference]: With dead ends: 8537 [2018-12-09 11:23:59,535 INFO L226 Difference]: Without dead ends: 7898 [2018-12-09 11:23:59,535 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-12-09 11:23:59,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7898 states. [2018-12-09 11:23:59,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7898 to 7322. [2018-12-09 11:23:59,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7322 states. [2018-12-09 11:23:59,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7322 states to 7322 states and 23826 transitions. [2018-12-09 11:23:59,623 INFO L78 Accepts]: Start accepts. Automaton has 7322 states and 23826 transitions. Word has length 38 [2018-12-09 11:23:59,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:23:59,623 INFO L480 AbstractCegarLoop]: Abstraction has 7322 states and 23826 transitions. [2018-12-09 11:23:59,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 11:23:59,623 INFO L276 IsEmpty]: Start isEmpty. Operand 7322 states and 23826 transitions. [2018-12-09 11:23:59,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-09 11:23:59,628 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:23:59,628 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:23:59,628 INFO L423 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:23:59,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:23:59,628 INFO L82 PathProgramCache]: Analyzing trace with hash 140136184, now seen corresponding path program 2 times [2018-12-09 11:23:59,629 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:23:59,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:23:59,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:23:59,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:23:59,631 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:23:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 11:23:59,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 11:23:59,665 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.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:214) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-12-09 11:23:59,667 INFO L168 Benchmark]: Toolchain (without parser) took 4672.37 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 493.4 MB). Free memory was 947.0 MB in the beginning and 826.6 MB in the end (delta: 120.4 MB). Peak memory consumption was 613.8 MB. Max. memory is 11.5 GB. [2018-12-09 11:23:59,668 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 11:23:59,668 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -158.0 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2018-12-09 11:23:59,668 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 11:23:59,669 INFO L168 Benchmark]: Boogie Preprocessor took 13.99 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 11:23:59,669 INFO L168 Benchmark]: RCFGBuilder took 202.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. [2018-12-09 11:23:59,669 INFO L168 Benchmark]: TraceAbstraction took 4131.57 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 372.2 MB). Free memory was 1.1 GB in the beginning and 826.6 MB in the end (delta: 247.9 MB). Peak memory consumption was 620.2 MB. Max. memory is 11.5 GB. [2018-12-09 11:23:59,671 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 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 294.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -158.0 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.99 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 202.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4131.57 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 372.2 MB). Free memory was 1.1 GB in the beginning and 826.6 MB in the end (delta: 247.9 MB). Peak memory consumption was 620.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-09 11:24:01,012 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 11:24:01,013 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 11:24:01,019 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 11:24:01,019 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 11:24:01,020 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 11:24:01,020 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 11:24:01,021 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 11:24:01,022 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 11:24:01,022 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 11:24:01,023 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 11:24:01,023 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 11:24:01,023 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 11:24:01,024 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 11:24:01,024 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 11:24:01,025 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 11:24:01,025 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 11:24:01,026 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 11:24:01,027 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 11:24:01,028 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 11:24:01,028 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 11:24:01,029 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 11:24:01,030 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 11:24:01,030 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 11:24:01,030 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 11:24:01,030 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 11:24:01,031 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 11:24:01,031 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 11:24:01,032 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 11:24:01,032 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 11:24:01,032 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 11:24:01,033 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 11:24:01,033 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 11:24:01,033 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 11:24:01,033 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 11:24:01,034 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 11:24:01,034 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-09 11:24:01,041 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 11:24:01,041 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 11:24:01,042 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 11:24:01,042 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 11:24:01,042 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 11:24:01,042 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 11:24:01,042 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 11:24:01,042 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 11:24:01,042 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 11:24:01,043 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 11:24:01,043 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 11:24:01,043 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 11:24:01,043 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 11:24:01,043 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 11:24:01,043 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 11:24:01,044 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 11:24:01,044 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 11:24:01,044 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 11:24:01,044 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 11:24:01,044 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 11:24:01,044 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 11:24:01,044 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 11:24:01,044 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 11:24:01,045 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 11:24:01,045 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 11:24:01,045 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 11:24:01,045 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 11:24:01,045 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 11:24:01,045 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 11:24:01,045 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 11:24:01,045 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 11:24:01,046 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-09 11:24:01,046 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 11:24:01,046 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 11:24:01,046 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 11:24:01,046 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_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a44ec3fe14113a3aba74e37fda369041ad122ce [2018-12-09 11:24:01,064 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 11:24:01,072 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 11:24:01,074 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 11:24:01,075 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 11:24:01,076 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 11:24:01,076 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan/../../sv-benchmarks/c/pthread-atomic/read_write_lock_false-unreach-call.i [2018-12-09 11:24:01,114 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan/data/6c2b83e48/1116ef29f7cc4768b8ac4b7a62b58a30/FLAGbcab559b5 [2018-12-09 11:24:01,549 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 11:24:01,549 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/sv-benchmarks/c/pthread-atomic/read_write_lock_false-unreach-call.i [2018-12-09 11:24:01,555 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan/data/6c2b83e48/1116ef29f7cc4768b8ac4b7a62b58a30/FLAGbcab559b5 [2018-12-09 11:24:01,563 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan/data/6c2b83e48/1116ef29f7cc4768b8ac4b7a62b58a30 [2018-12-09 11:24:01,565 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 11:24:01,566 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 11:24:01,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 11:24:01,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 11:24:01,568 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 11:24:01,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:24:01" (1/1) ... [2018-12-09 11:24:01,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5554d819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:24:01, skipping insertion in model container [2018-12-09 11:24:01,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:24:01" (1/1) ... [2018-12-09 11:24:01,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 11:24:01,602 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 11:24:01,761 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 11:24:01,769 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 11:24:01,844 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 11:24:01,873 INFO L195 MainTranslator]: Completed translation [2018-12-09 11:24:01,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:24:01 WrapperNode [2018-12-09 11:24:01,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 11:24:01,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 11:24:01,874 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 11:24:01,874 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 11:24:01,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:24:01" (1/1) ... [2018-12-09 11:24:01,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:24:01" (1/1) ... [2018-12-09 11:24:01,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 11:24:01,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 11:24:01,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 11:24:01,900 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 11:24:01,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:24:01" (1/1) ... [2018-12-09 11:24:01,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:24:01" (1/1) ... [2018-12-09 11:24:01,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:24:01" (1/1) ... [2018-12-09 11:24:01,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:24:01" (1/1) ... [2018-12-09 11:24:01,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:24:01" (1/1) ... [2018-12-09 11:24:01,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:24:01" (1/1) ... [2018-12-09 11:24:01,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:24:01" (1/1) ... [2018-12-09 11:24:01,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 11:24:01,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 11:24:01,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 11:24:01,916 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 11:24:01,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:24:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 11:24:01,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 11:24:01,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-09 11:24:01,946 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2018-12-09 11:24:01,946 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2018-12-09 11:24:01,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 11:24:01,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-09 11:24:01,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 11:24:01,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 11:24:01,946 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2018-12-09 11:24:01,946 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2018-12-09 11:24:01,947 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-09 11:24:02,013 INFO L1421 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_read_lock_returnLabel [2018-12-09 11:24:02,103 INFO L1421 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_write_lock_returnLabel [2018-12-09 11:24:02,108 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 11:24:02,108 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-09 11:24:02,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:24:02 BoogieIcfgContainer [2018-12-09 11:24:02,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 11:24:02,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 11:24:02,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 11:24:02,111 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 11:24:02,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 11:24:01" (1/3) ... [2018-12-09 11:24:02,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d5e10cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:24:02, skipping insertion in model container [2018-12-09 11:24:02,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:24:01" (2/3) ... [2018-12-09 11:24:02,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d5e10cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:24:02, skipping insertion in model container [2018-12-09 11:24:02,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:24:02" (3/3) ... [2018-12-09 11:24:02,113 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock_false-unreach-call.i [2018-12-09 11:24:02,132 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,132 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,132 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,132 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,132 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,132 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,132 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,133 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,133 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,133 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,133 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,133 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,133 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,133 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,133 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,134 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,134 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,134 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,134 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,134 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,134 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,134 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,134 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,135 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,135 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,135 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,135 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,135 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,135 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,135 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,135 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,135 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,135 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,136 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:24:02,155 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-09 11:24:02,155 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 11:24:02,160 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-09 11:24:02,168 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-09 11:24:02,182 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 11:24:02,182 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 11:24:02,182 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 11:24:02,182 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 11:24:02,183 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 11:24:02,183 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 11:24:02,183 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 11:24:02,183 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 11:24:02,183 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 11:24:02,188 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84places, 93 transitions [2018-12-09 11:24:03,350 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26397 states. [2018-12-09 11:24:03,351 INFO L276 IsEmpty]: Start isEmpty. Operand 26397 states. [2018-12-09 11:24:03,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 11:24:03,356 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:24:03,357 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:24:03,359 INFO L423 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:24:03,363 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:24:03,363 INFO L82 PathProgramCache]: Analyzing trace with hash 563310493, now seen corresponding path program 1 times [2018-12-09 11:24:03,367 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 11:24:03,367 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 11:24:03,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:24:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:24:03,421 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:24:03,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:24:03,449 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 11:24:03,451 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:24:03,451 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 11:24:03,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 11:24:03,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 11:24:03,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 11:24:03,463 INFO L87 Difference]: Start difference. First operand 26397 states. Second operand 4 states. [2018-12-09 11:24:03,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:24:03,792 INFO L93 Difference]: Finished difference Result 52906 states and 202299 transitions. [2018-12-09 11:24:03,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 11:24:03,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-12-09 11:24:03,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:24:03,938 INFO L225 Difference]: With dead ends: 52906 [2018-12-09 11:24:03,938 INFO L226 Difference]: Without dead ends: 36824 [2018-12-09 11:24:03,939 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-09 11:24:04,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36824 states. [2018-12-09 11:24:04,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36824 to 22832. [2018-12-09 11:24:04,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22832 states. [2018-12-09 11:24:04,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22832 states to 22832 states and 87504 transitions. [2018-12-09 11:24:04,589 INFO L78 Accepts]: Start accepts. Automaton has 22832 states and 87504 transitions. Word has length 23 [2018-12-09 11:24:04,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:24:04,589 INFO L480 AbstractCegarLoop]: Abstraction has 22832 states and 87504 transitions. [2018-12-09 11:24:04,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 11:24:04,589 INFO L276 IsEmpty]: Start isEmpty. Operand 22832 states and 87504 transitions. [2018-12-09 11:24:04,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-09 11:24:04,591 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:24:04,591 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:24:04,592 INFO L423 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:24:04,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:24:04,592 INFO L82 PathProgramCache]: Analyzing trace with hash 175754366, now seen corresponding path program 1 times [2018-12-09 11:24:04,592 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 11:24:04,592 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 11:24:04,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:24:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:24:04,628 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:24:04,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:24:04,644 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 11:24:04,645 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:24:04,645 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 11:24:04,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 11:24:04,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 11:24:04,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 11:24:04,647 INFO L87 Difference]: Start difference. First operand 22832 states and 87504 transitions. Second operand 4 states. [2018-12-09 11:24:04,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:24:04,854 INFO L93 Difference]: Finished difference Result 44834 states and 165805 transitions. [2018-12-09 11:24:04,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 11:24:04,855 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-12-09 11:24:04,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:24:04,959 INFO L225 Difference]: With dead ends: 44834 [2018-12-09 11:24:04,959 INFO L226 Difference]: Without dead ends: 44474 [2018-12-09 11:24:04,959 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 11:24:05,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44474 states. [2018-12-09 11:24:05,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44474 to 24815. [2018-12-09 11:24:05,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24815 states. [2018-12-09 11:24:05,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24815 states to 24815 states and 92018 transitions. [2018-12-09 11:24:05,495 INFO L78 Accepts]: Start accepts. Automaton has 24815 states and 92018 transitions. Word has length 25 [2018-12-09 11:24:05,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:24:05,495 INFO L480 AbstractCegarLoop]: Abstraction has 24815 states and 92018 transitions. [2018-12-09 11:24:05,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 11:24:05,495 INFO L276 IsEmpty]: Start isEmpty. Operand 24815 states and 92018 transitions. [2018-12-09 11:24:05,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-09 11:24:05,497 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:24:05,497 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:24:05,497 INFO L423 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:24:05,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:24:05,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1318827774, now seen corresponding path program 2 times [2018-12-09 11:24:05,497 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 11:24:05,497 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 11:24:05,515 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-12-09 11:24:05,532 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-12-09 11:24:05,532 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 11:24:05,533 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:24:05,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:24:05,539 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 11:24:05,540 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:24:05,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 11:24:05,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 11:24:05,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 11:24:05,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 11:24:05,541 INFO L87 Difference]: Start difference. First operand 24815 states and 92018 transitions. Second operand 3 states. [2018-12-09 11:24:05,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:24:05,597 INFO L93 Difference]: Finished difference Result 18827 states and 66927 transitions. [2018-12-09 11:24:05,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 11:24:05,597 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-12-09 11:24:05,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:24:05,625 INFO L225 Difference]: With dead ends: 18827 [2018-12-09 11:24:05,625 INFO L226 Difference]: Without dead ends: 18347 [2018-12-09 11:24:05,625 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 11:24:05,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18347 states. [2018-12-09 11:24:05,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18347 to 18347. [2018-12-09 11:24:05,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18347 states. [2018-12-09 11:24:05,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18347 states to 18347 states and 65335 transitions. [2018-12-09 11:24:05,947 INFO L78 Accepts]: Start accepts. Automaton has 18347 states and 65335 transitions. Word has length 25 [2018-12-09 11:24:05,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:24:05,947 INFO L480 AbstractCegarLoop]: Abstraction has 18347 states and 65335 transitions. [2018-12-09 11:24:05,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 11:24:05,947 INFO L276 IsEmpty]: Start isEmpty. Operand 18347 states and 65335 transitions. [2018-12-09 11:24:05,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-09 11:24:05,949 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:24:05,949 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:24:05,949 INFO L423 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:24:05,950 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:24:05,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1891005508, now seen corresponding path program 1 times [2018-12-09 11:24:05,950 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 11:24:05,950 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 11:24:05,966 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 11:24:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:24:05,987 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:24:05,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:24:05,998 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 11:24:06,000 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:24:06,000 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 11:24:06,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 11:24:06,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 11:24:06,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 11:24:06,000 INFO L87 Difference]: Start difference. First operand 18347 states and 65335 transitions. Second operand 4 states. [2018-12-09 11:24:06,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:24:06,158 INFO L93 Difference]: Finished difference Result 32444 states and 115032 transitions. [2018-12-09 11:24:06,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 11:24:06,158 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-12-09 11:24:06,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:24:06,203 INFO L225 Difference]: With dead ends: 32444 [2018-12-09 11:24:06,203 INFO L226 Difference]: Without dead ends: 25844 [2018-12-09 11:24:06,203 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-09 11:24:06,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25844 states. [2018-12-09 11:24:06,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25844 to 15197. [2018-12-09 11:24:06,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15197 states. [2018-12-09 11:24:06,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15197 states to 15197 states and 54478 transitions. [2018-12-09 11:24:06,456 INFO L78 Accepts]: Start accepts. Automaton has 15197 states and 54478 transitions. Word has length 29 [2018-12-09 11:24:06,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:24:06,456 INFO L480 AbstractCegarLoop]: Abstraction has 15197 states and 54478 transitions. [2018-12-09 11:24:06,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 11:24:06,456 INFO L276 IsEmpty]: Start isEmpty. Operand 15197 states and 54478 transitions. [2018-12-09 11:24:06,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-09 11:24:06,458 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:24:06,458 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:24:06,458 INFO L423 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:24:06,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:24:06,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1356359066, now seen corresponding path program 1 times [2018-12-09 11:24:06,459 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 11:24:06,459 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 11:24:06,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:24:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:24:06,495 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:24:06,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:24:06,520 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 11:24:06,521 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:24:06,522 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 11:24:06,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 11:24:06,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 11:24:06,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 11:24:06,522 INFO L87 Difference]: Start difference. First operand 15197 states and 54478 transitions. Second operand 5 states. [2018-12-09 11:24:06,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:24:06,576 INFO L93 Difference]: Finished difference Result 8213 states and 26746 transitions. [2018-12-09 11:24:06,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 11:24:06,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2018-12-09 11:24:06,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:24:06,588 INFO L225 Difference]: With dead ends: 8213 [2018-12-09 11:24:06,588 INFO L226 Difference]: Without dead ends: 8213 [2018-12-09 11:24:06,588 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 11:24:06,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8213 states. [2018-12-09 11:24:06,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8213 to 7637. [2018-12-09 11:24:06,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7637 states. [2018-12-09 11:24:06,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7637 states to 7637 states and 24730 transitions. [2018-12-09 11:24:06,698 INFO L78 Accepts]: Start accepts. Automaton has 7637 states and 24730 transitions. Word has length 33 [2018-12-09 11:24:06,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:24:06,698 INFO L480 AbstractCegarLoop]: Abstraction has 7637 states and 24730 transitions. [2018-12-09 11:24:06,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 11:24:06,699 INFO L276 IsEmpty]: Start isEmpty. Operand 7637 states and 24730 transitions. [2018-12-09 11:24:06,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-09 11:24:06,702 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:24:06,702 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:24:06,703 INFO L423 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:24:06,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:24:06,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1715420402, now seen corresponding path program 1 times [2018-12-09 11:24:06,703 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 11:24:06,703 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 11:24:06,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:24:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:24:06,738 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:24:06,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:24:06,758 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 11:24:06,759 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:24:06,760 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 11:24:06,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 11:24:06,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 11:24:06,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 11:24:06,760 INFO L87 Difference]: Start difference. First operand 7637 states and 24730 transitions. Second operand 5 states. [2018-12-09 11:24:06,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:24:06,849 INFO L93 Difference]: Finished difference Result 11390 states and 37095 transitions. [2018-12-09 11:24:06,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 11:24:06,850 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2018-12-09 11:24:06,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:24:06,864 INFO L225 Difference]: With dead ends: 11390 [2018-12-09 11:24:06,864 INFO L226 Difference]: Without dead ends: 10751 [2018-12-09 11:24:06,865 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-12-09 11:24:06,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10751 states. [2018-12-09 11:24:06,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10751 to 7322. [2018-12-09 11:24:06,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7322 states. [2018-12-09 11:24:07,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7322 states to 7322 states and 23826 transitions. [2018-12-09 11:24:07,011 INFO L78 Accepts]: Start accepts. Automaton has 7322 states and 23826 transitions. Word has length 38 [2018-12-09 11:24:07,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:24:07,011 INFO L480 AbstractCegarLoop]: Abstraction has 7322 states and 23826 transitions. [2018-12-09 11:24:07,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 11:24:07,011 INFO L276 IsEmpty]: Start isEmpty. Operand 7322 states and 23826 transitions. [2018-12-09 11:24:07,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-09 11:24:07,013 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:24:07,013 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:24:07,014 INFO L423 AbstractCegarLoop]: === Iteration 7 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:24:07,014 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:24:07,014 INFO L82 PathProgramCache]: Analyzing trace with hash 140136184, now seen corresponding path program 2 times [2018-12-09 11:24:07,014 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 11:24:07,014 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2bfdcbd4-5d22-4fc4-875b-45bcf09d26ae/bin-2019/utaipan/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 11:24:07,030 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-12-09 11:24:07,087 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-12-09 11:24:07,087 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2018-12-09 11:24:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 11:24:07,363 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 11:24:07,364 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:110) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:87) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.computeIcfgProgramExecution(IcfgProgramExecutionBuilder.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.getIcfgProgramExecution(IcfgProgramExecutionBuilder.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecution(TraceCheck.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:344) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-12-09 11:24:07,369 INFO L168 Benchmark]: Toolchain (without parser) took 5803.01 ms. Allocated memory was 1.0 GB in the beginning and 1.9 GB in the end (delta: 822.6 MB). Free memory was 939.3 MB in the beginning and 1.4 GB in the end (delta: -418.0 MB). Peak memory consumption was 404.7 MB. Max. memory is 11.5 GB. [2018-12-09 11:24:07,371 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 11:24:07,371 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -189.4 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. [2018-12-09 11:24:07,372 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.04 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 11:24:07,373 INFO L168 Benchmark]: Boogie Preprocessor took 14.86 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 11:24:07,373 INFO L168 Benchmark]: RCFGBuilder took 193.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. [2018-12-09 11:24:07,374 INFO L168 Benchmark]: TraceAbstraction took 5258.47 ms. Allocated memory was 1.2 GB in the beginning and 1.9 GB in the end (delta: 666.9 MB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -253.7 MB). Peak memory consumption was 413.2 MB. Max. memory is 11.5 GB. [2018-12-09 11:24:07,379 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 307.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -189.4 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.04 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.86 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 193.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5258.47 ms. Allocated memory was 1.2 GB in the beginning and 1.9 GB in the end (delta: 666.9 MB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -253.7 MB). Peak memory consumption was 413.2 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...