./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock_false-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_03a0538d-998a-4f8f-ad29-368e67f47432/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_03a0538d-998a-4f8f-ad29-368e67f47432/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_03a0538d-998a-4f8f-ad29-368e67f47432/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_03a0538d-998a-4f8f-ad29-368e67f47432/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_03a0538d-998a-4f8f-ad29-368e67f47432/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_03a0538d-998a-4f8f-ad29-368e67f47432/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_03a0538d-998a-4f8f-ad29-368e67f47432/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_03a0538d-998a-4f8f-ad29-368e67f47432/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_03a0538d-998a-4f8f-ad29-368e67f47432/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_03a0538d-998a-4f8f-ad29-368e67f47432/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_03a0538d-998a-4f8f-ad29-368e67f47432/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_03a0538d-998a-4f8f-ad29-368e67f47432/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-aa41828 [2018-11-23 01:00:57,758 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 01:00:57,759 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 01:00:57,767 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 01:00:57,768 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 01:00:57,768 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 01:00:57,770 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 01:00:57,771 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 01:00:57,772 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 01:00:57,773 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 01:00:57,774 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 01:00:57,774 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 01:00:57,775 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 01:00:57,776 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 01:00:57,777 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 01:00:57,777 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 01:00:57,778 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 01:00:57,779 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 01:00:57,781 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 01:00:57,782 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 01:00:57,783 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 01:00:57,784 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 01:00:57,786 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 01:00:57,786 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 01:00:57,786 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 01:00:57,787 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 01:00:57,788 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 01:00:57,788 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 01:00:57,789 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 01:00:57,790 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 01:00:57,790 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 01:00:57,790 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 01:00:57,791 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 01:00:57,791 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 01:00:57,791 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 01:00:57,792 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 01:00:57,792 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_03a0538d-998a-4f8f-ad29-368e67f47432/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-23 01:00:57,803 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 01:00:57,803 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 01:00:57,804 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 01:00:57,804 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 01:00:57,804 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 01:00:57,804 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 01:00:57,805 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 01:00:57,805 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 01:00:57,805 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 01:00:57,805 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 01:00:57,805 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 01:00:57,805 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 01:00:57,806 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 01:00:57,806 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 01:00:57,806 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 01:00:57,807 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 01:00:57,807 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 01:00:57,807 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 01:00:57,807 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 01:00:57,807 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 01:00:57,807 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 01:00:57,808 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 01:00:57,808 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 01:00:57,808 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 01:00:57,808 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 01:00:57,808 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 01:00:57,808 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 01:00:57,809 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 01:00:57,809 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 01:00:57,809 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 01:00:57,809 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 01:00:57,809 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 01:00:57,809 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 01:00:57,810 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 01:00:57,810 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 01:00:57,810 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 01:00:57,810 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 01:00:57,810 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_03a0538d-998a-4f8f-ad29-368e67f47432/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 [2018-11-23 01:00:57,834 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 01:00:57,845 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 01:00:57,847 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 01:00:57,849 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 01:00:57,849 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 01:00:57,850 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_03a0538d-998a-4f8f-ad29-368e67f47432/bin-2019/utaipan/../../sv-benchmarks/c/pthread-atomic/read_write_lock_false-unreach-call.i [2018-11-23 01:00:57,894 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_03a0538d-998a-4f8f-ad29-368e67f47432/bin-2019/utaipan/data/e4ded739d/f7fed9a492da4928ae14792dcc4b9cb6/FLAGdbda43267 [2018-11-23 01:00:58,279 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 01:00:58,280 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_03a0538d-998a-4f8f-ad29-368e67f47432/sv-benchmarks/c/pthread-atomic/read_write_lock_false-unreach-call.i [2018-11-23 01:00:58,287 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_03a0538d-998a-4f8f-ad29-368e67f47432/bin-2019/utaipan/data/e4ded739d/f7fed9a492da4928ae14792dcc4b9cb6/FLAGdbda43267 [2018-11-23 01:00:58,669 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_03a0538d-998a-4f8f-ad29-368e67f47432/bin-2019/utaipan/data/e4ded739d/f7fed9a492da4928ae14792dcc4b9cb6 [2018-11-23 01:00:58,671 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 01:00:58,672 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 01:00:58,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 01:00:58,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 01:00:58,677 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 01:00:58,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:00:58" (1/1) ... [2018-11-23 01:00:58,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c2e9fae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:00:58, skipping insertion in model container [2018-11-23 01:00:58,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:00:58" (1/1) ... [2018-11-23 01:00:58,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 01:00:58,724 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 01:00:58,949 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 01:00:58,956 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 01:00:58,989 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 01:00:59,106 INFO L195 MainTranslator]: Completed translation [2018-11-23 01:00:59,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:00:59 WrapperNode [2018-11-23 01:00:59,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 01:00:59,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 01:00:59,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 01:00:59,108 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 01:00:59,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:00:59" (1/1) ... [2018-11-23 01:00:59,131 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:00:59" (1/1) ... [2018-11-23 01:00:59,152 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 01:00:59,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 01:00:59,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 01:00:59,153 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 01:00:59,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:00:59" (1/1) ... [2018-11-23 01:00:59,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:00:59" (1/1) ... [2018-11-23 01:00:59,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:00:59" (1/1) ... [2018-11-23 01:00:59,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:00:59" (1/1) ... [2018-11-23 01:00:59,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:00:59" (1/1) ... [2018-11-23 01:00:59,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:00:59" (1/1) ... [2018-11-23 01:00:59,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:00:59" (1/1) ... [2018-11-23 01:00:59,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 01:00:59,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 01:00:59,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 01:00:59,176 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 01:00:59,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:00:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03a0538d-998a-4f8f-ad29-368e67f47432/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 [2018-11-23 01:00:59,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 01:00:59,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-23 01:00:59,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-23 01:00:59,221 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2018-11-23 01:00:59,221 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2018-11-23 01:00:59,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 01:00:59,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 01:00:59,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 01:00:59,222 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2018-11-23 01:00:59,222 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2018-11-23 01:00:59,223 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-11-23 01:00:59,314 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_read_lock_returnLabel [2018-11-23 01:00:59,497 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_write_lock_returnLabel [2018-11-23 01:00:59,509 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 01:00:59,509 INFO L280 CfgBuilder]: Removed 8 assue(true) statements. [2018-11-23 01:00:59,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:00:59 BoogieIcfgContainer [2018-11-23 01:00:59,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 01:00:59,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 01:00:59,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 01:00:59,514 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 01:00:59,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:00:58" (1/3) ... [2018-11-23 01:00:59,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@335f7898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:00:59, skipping insertion in model container [2018-11-23 01:00:59,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:00:59" (2/3) ... [2018-11-23 01:00:59,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@335f7898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:00:59, skipping insertion in model container [2018-11-23 01:00:59,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:00:59" (3/3) ... [2018-11-23 01:00:59,517 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock_false-unreach-call.i [2018-11-23 01:00:59,547 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,547 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,548 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,548 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,548 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,548 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,548 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,549 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,549 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,549 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,549 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,549 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,550 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,550 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,550 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,550 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,550 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,551 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,551 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,551 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,551 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,551 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,552 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,552 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,552 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,552 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,552 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,552 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,553 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,553 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,553 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,553 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,553 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,554 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:00:59,608 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-11-23 01:00:59,608 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 01:00:59,615 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-23 01:00:59,631 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-23 01:00:59,654 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 01:00:59,655 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 01:00:59,655 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 01:00:59,655 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 01:00:59,655 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 01:00:59,655 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 01:00:59,655 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 01:00:59,655 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 01:00:59,665 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84places, 93 transitions [2018-11-23 01:01:01,229 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26397 states. [2018-11-23 01:01:01,230 INFO L276 IsEmpty]: Start isEmpty. Operand 26397 states. [2018-11-23 01:01:01,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-23 01:01:01,238 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:01:01,238 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:01:01,239 INFO L423 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 01:01:01,243 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:01:01,244 INFO L82 PathProgramCache]: Analyzing trace with hash 563310493, now seen corresponding path program 1 times [2018-11-23 01:01:01,245 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 01:01:01,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:01:01,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:01:01,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:01:01,284 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 01:01:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:01:01,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 01:01:01,383 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 01:01:01,383 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 01:01:01,383 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 01:01:01,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 01:01:01,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 01:01:01,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 01:01:01,396 INFO L87 Difference]: Start difference. First operand 26397 states. Second operand 4 states. [2018-11-23 01:01:01,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:01:01,831 INFO L93 Difference]: Finished difference Result 52906 states and 202299 transitions. [2018-11-23 01:01:01,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 01:01:01,833 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-23 01:01:01,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:01:01,983 INFO L225 Difference]: With dead ends: 52906 [2018-11-23 01:01:01,983 INFO L226 Difference]: Without dead ends: 36824 [2018-11-23 01:01:01,984 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-23 01:01:02,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36824 states. [2018-11-23 01:01:02,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36824 to 22832. [2018-11-23 01:01:02,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22832 states. [2018-11-23 01:01:03,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22832 states to 22832 states and 87504 transitions. [2018-11-23 01:01:03,032 INFO L78 Accepts]: Start accepts. Automaton has 22832 states and 87504 transitions. Word has length 23 [2018-11-23 01:01:03,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:01:03,033 INFO L480 AbstractCegarLoop]: Abstraction has 22832 states and 87504 transitions. [2018-11-23 01:01:03,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 01:01:03,033 INFO L276 IsEmpty]: Start isEmpty. Operand 22832 states and 87504 transitions. [2018-11-23 01:01:03,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-23 01:01:03,037 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:01:03,037 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:01:03,037 INFO L423 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 01:01:03,037 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:01:03,037 INFO L82 PathProgramCache]: Analyzing trace with hash 175754366, now seen corresponding path program 1 times [2018-11-23 01:01:03,038 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 01:01:03,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:01:03,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:01:03,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:01:03,042 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 01:01:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:01:03,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 01:01:03,108 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 01:01:03,108 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 01:01:03,109 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 01:01:03,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 01:01:03,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 01:01:03,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 01:01:03,111 INFO L87 Difference]: Start difference. First operand 22832 states and 87504 transitions. Second operand 4 states. [2018-11-23 01:01:03,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:01:03,559 INFO L93 Difference]: Finished difference Result 36860 states and 131462 transitions. [2018-11-23 01:01:03,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 01:01:03,560 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-11-23 01:01:03,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:01:03,716 INFO L225 Difference]: With dead ends: 36860 [2018-11-23 01:01:03,716 INFO L226 Difference]: Without dead ends: 36500 [2018-11-23 01:01:03,717 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 01:01:03,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36500 states. [2018-11-23 01:01:04,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36500 to 24815. [2018-11-23 01:01:04,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24815 states. [2018-11-23 01:01:04,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24815 states to 24815 states and 89636 transitions. [2018-11-23 01:01:04,541 INFO L78 Accepts]: Start accepts. Automaton has 24815 states and 89636 transitions. Word has length 25 [2018-11-23 01:01:04,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:01:04,542 INFO L480 AbstractCegarLoop]: Abstraction has 24815 states and 89636 transitions. [2018-11-23 01:01:04,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 01:01:04,542 INFO L276 IsEmpty]: Start isEmpty. Operand 24815 states and 89636 transitions. [2018-11-23 01:01:04,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-23 01:01:04,543 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:01:04,544 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:01:04,544 INFO L423 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 01:01:04,544 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:01:04,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1318827774, now seen corresponding path program 2 times [2018-11-23 01:01:04,544 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 01:01:04,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:01:04,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:01:04,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:01:04,548 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 01:01:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:01:04,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 01:01:04,599 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 01:01:04,599 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 01:01:04,599 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 01:01:04,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 01:01:04,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 01:01:04,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-23 01:01:04,601 INFO L87 Difference]: Start difference. First operand 24815 states and 89636 transitions. Second operand 5 states. [2018-11-23 01:01:04,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:01:04,687 INFO L93 Difference]: Finished difference Result 14369 states and 47935 transitions. [2018-11-23 01:01:04,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 01:01:04,687 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-11-23 01:01:04,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:01:04,712 INFO L225 Difference]: With dead ends: 14369 [2018-11-23 01:01:04,713 INFO L226 Difference]: Without dead ends: 13889 [2018-11-23 01:01:04,713 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-23 01:01:04,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13889 states. [2018-11-23 01:01:04,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13889 to 13889. [2018-11-23 01:01:04,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13889 states. [2018-11-23 01:01:04,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13889 states to 13889 states and 46343 transitions. [2018-11-23 01:01:04,922 INFO L78 Accepts]: Start accepts. Automaton has 13889 states and 46343 transitions. Word has length 25 [2018-11-23 01:01:04,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:01:04,922 INFO L480 AbstractCegarLoop]: Abstraction has 13889 states and 46343 transitions. [2018-11-23 01:01:04,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 01:01:04,923 INFO L276 IsEmpty]: Start isEmpty. Operand 13889 states and 46343 transitions. [2018-11-23 01:01:04,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-23 01:01:04,926 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:01:04,926 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:01:04,926 INFO L423 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 01:01:04,926 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:01:04,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1891005508, now seen corresponding path program 1 times [2018-11-23 01:01:04,927 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 01:01:04,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:01:04,930 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 01:01:04,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:01:04,930 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 01:01:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:01:05,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 01:01:05,177 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 01:01:05,177 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 01:01:05,177 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 01:01:05,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 01:01:05,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 01:01:05,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 01:01:05,178 INFO L87 Difference]: Start difference. First operand 13889 states and 46343 transitions. Second operand 4 states. [2018-11-23 01:01:05,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:01:05,272 INFO L93 Difference]: Finished difference Result 14756 states and 48986 transitions. [2018-11-23 01:01:05,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 01:01:05,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-11-23 01:01:05,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:01:05,288 INFO L225 Difference]: With dead ends: 14756 [2018-11-23 01:01:05,288 INFO L226 Difference]: Without dead ends: 8996 [2018-11-23 01:01:05,288 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-23 01:01:05,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8996 states. [2018-11-23 01:01:05,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8996 to 7637. [2018-11-23 01:01:05,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7637 states. [2018-11-23 01:01:05,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7637 states to 7637 states and 24730 transitions. [2018-11-23 01:01:05,401 INFO L78 Accepts]: Start accepts. Automaton has 7637 states and 24730 transitions. Word has length 29 [2018-11-23 01:01:05,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:01:05,402 INFO L480 AbstractCegarLoop]: Abstraction has 7637 states and 24730 transitions. [2018-11-23 01:01:05,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 01:01:05,402 INFO L276 IsEmpty]: Start isEmpty. Operand 7637 states and 24730 transitions. [2018-11-23 01:01:05,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-23 01:01:05,406 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:01:05,407 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:01:05,407 INFO L423 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 01:01:05,407 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:01:05,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1715420402, now seen corresponding path program 1 times [2018-11-23 01:01:05,407 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 01:01:05,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:01:05,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:01:05,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:01:05,409 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 01:01:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:01:05,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 01:01:05,478 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 01:01:05,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-23 01:01:05,479 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 01:01:05,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 01:01:05,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 01:01:05,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 01:01:05,479 INFO L87 Difference]: Start difference. First operand 7637 states and 24730 transitions. Second operand 6 states. [2018-11-23 01:01:05,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:01:05,561 INFO L93 Difference]: Finished difference Result 8537 states and 27535 transitions. [2018-11-23 01:01:05,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 01:01:05,561 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2018-11-23 01:01:05,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:01:05,573 INFO L225 Difference]: With dead ends: 8537 [2018-11-23 01:01:05,574 INFO L226 Difference]: Without dead ends: 7898 [2018-11-23 01:01:05,574 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-23 01:01:05,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7898 states. [2018-11-23 01:01:05,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7898 to 7322. [2018-11-23 01:01:05,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7322 states. [2018-11-23 01:01:05,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7322 states to 7322 states and 23826 transitions. [2018-11-23 01:01:05,675 INFO L78 Accepts]: Start accepts. Automaton has 7322 states and 23826 transitions. Word has length 38 [2018-11-23 01:01:05,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:01:05,675 INFO L480 AbstractCegarLoop]: Abstraction has 7322 states and 23826 transitions. [2018-11-23 01:01:05,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 01:01:05,676 INFO L276 IsEmpty]: Start isEmpty. Operand 7322 states and 23826 transitions. [2018-11-23 01:01:05,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-23 01:01:05,680 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:01:05,680 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:01:05,680 INFO L423 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 01:01:05,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:01:05,681 INFO L82 PathProgramCache]: Analyzing trace with hash 140136184, now seen corresponding path program 2 times [2018-11-23 01:01:05,681 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 01:01:05,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:01:05,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:01:05,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:01:05,683 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 01:01:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:01:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:01:05,725 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) [2018-11-23 01:01:05,728 INFO L168 Benchmark]: Toolchain (without parser) took 7056.41 ms. Allocated memory was 1.0 GB in the beginning and 1.8 GB in the end (delta: 802.2 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -107.4 MB). Peak memory consumption was 694.7 MB. Max. memory is 11.5 GB. [2018-11-23 01:01:05,730 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 01:01:05,730 INFO L168 Benchmark]: CACSL2BoogieTranslator took 434.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -175.9 MB). Peak memory consumption was 38.9 MB. Max. memory is 11.5 GB. [2018-11-23 01:01:05,730 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.58 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: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 11.5 GB. [2018-11-23 01:01:05,731 INFO L168 Benchmark]: Boogie Preprocessor took 22.69 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 01:01:05,731 INFO L168 Benchmark]: RCFGBuilder took 334.14 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: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. [2018-11-23 01:01:05,732 INFO L168 Benchmark]: TraceAbstraction took 6217.48 ms. Allocated memory was 1.2 GB in the beginning and 1.8 GB in the end (delta: 655.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.2 MB). Peak memory consumption was 688.6 MB. Max. memory is 11.5 GB. [2018-11-23 01:01:05,735 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 434.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -175.9 MB). Peak memory consumption was 38.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.58 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: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.69 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 334.14 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: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6217.48 ms. Allocated memory was 1.2 GB in the beginning and 1.8 GB in the end (delta: 655.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.2 MB). Peak memory consumption was 688.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-aa41828 [2018-11-23 01:01:07,171 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 01:01:07,172 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 01:01:07,180 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 01:01:07,180 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 01:01:07,181 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 01:01:07,182 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 01:01:07,183 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 01:01:07,184 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 01:01:07,185 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 01:01:07,185 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 01:01:07,186 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 01:01:07,186 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 01:01:07,187 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 01:01:07,188 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 01:01:07,188 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 01:01:07,189 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 01:01:07,190 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 01:01:07,192 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 01:01:07,193 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 01:01:07,193 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 01:01:07,194 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 01:01:07,196 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 01:01:07,196 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 01:01:07,196 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 01:01:07,197 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 01:01:07,197 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 01:01:07,198 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 01:01:07,199 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 01:01:07,199 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 01:01:07,199 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 01:01:07,200 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 01:01:07,200 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 01:01:07,200 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 01:01:07,201 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 01:01:07,202 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 01:01:07,202 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_03a0538d-998a-4f8f-ad29-368e67f47432/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-23 01:01:07,212 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 01:01:07,212 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 01:01:07,213 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 01:01:07,213 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 01:01:07,213 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 01:01:07,213 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 01:01:07,213 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 01:01:07,213 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 01:01:07,214 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 01:01:07,214 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 01:01:07,214 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 01:01:07,215 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 01:01:07,215 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 01:01:07,215 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 01:01:07,215 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 01:01:07,215 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 01:01:07,215 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 01:01:07,215 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-23 01:01:07,216 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-23 01:01:07,216 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 01:01:07,216 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 01:01:07,216 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 01:01:07,216 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 01:01:07,216 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 01:01:07,217 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 01:01:07,217 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 01:01:07,217 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 01:01:07,217 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 01:01:07,217 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 01:01:07,217 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 01:01:07,217 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 01:01:07,218 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-23 01:01:07,218 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 01:01:07,218 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-23 01:01:07,218 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-23 01:01:07,218 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_03a0538d-998a-4f8f-ad29-368e67f47432/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 [2018-11-23 01:01:07,248 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 01:01:07,256 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 01:01:07,258 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 01:01:07,260 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 01:01:07,260 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 01:01:07,260 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_03a0538d-998a-4f8f-ad29-368e67f47432/bin-2019/utaipan/../../sv-benchmarks/c/pthread-atomic/read_write_lock_false-unreach-call.i [2018-11-23 01:01:07,305 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_03a0538d-998a-4f8f-ad29-368e67f47432/bin-2019/utaipan/data/bb22ccdf8/0c8a1bfa91ca41e6bb3a96136ec224a1/FLAG210e96cce [2018-11-23 01:01:07,751 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 01:01:07,751 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_03a0538d-998a-4f8f-ad29-368e67f47432/sv-benchmarks/c/pthread-atomic/read_write_lock_false-unreach-call.i [2018-11-23 01:01:07,759 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_03a0538d-998a-4f8f-ad29-368e67f47432/bin-2019/utaipan/data/bb22ccdf8/0c8a1bfa91ca41e6bb3a96136ec224a1/FLAG210e96cce [2018-11-23 01:01:07,767 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_03a0538d-998a-4f8f-ad29-368e67f47432/bin-2019/utaipan/data/bb22ccdf8/0c8a1bfa91ca41e6bb3a96136ec224a1 [2018-11-23 01:01:07,769 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 01:01:07,770 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 01:01:07,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 01:01:07,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 01:01:07,773 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 01:01:07,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:01:07" (1/1) ... [2018-11-23 01:01:07,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb134ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:01:07, skipping insertion in model container [2018-11-23 01:01:07,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:01:07" (1/1) ... [2018-11-23 01:01:07,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 01:01:07,814 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 01:01:08,054 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 01:01:08,068 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 01:01:08,111 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 01:01:08,166 INFO L195 MainTranslator]: Completed translation [2018-11-23 01:01:08,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:01:08 WrapperNode [2018-11-23 01:01:08,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 01:01:08,168 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 01:01:08,168 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 01:01:08,168 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 01:01:08,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:01:08" (1/1) ... [2018-11-23 01:01:08,234 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:01:08" (1/1) ... [2018-11-23 01:01:08,249 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 01:01:08,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 01:01:08,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 01:01:08,250 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 01:01:08,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:01:08" (1/1) ... [2018-11-23 01:01:08,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:01:08" (1/1) ... [2018-11-23 01:01:08,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:01:08" (1/1) ... [2018-11-23 01:01:08,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:01:08" (1/1) ... [2018-11-23 01:01:08,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:01:08" (1/1) ... [2018-11-23 01:01:08,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:01:08" (1/1) ... [2018-11-23 01:01:08,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:01:08" (1/1) ... [2018-11-23 01:01:08,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 01:01:08,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 01:01:08,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 01:01:08,272 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 01:01:08,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:01:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03a0538d-998a-4f8f-ad29-368e67f47432/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 [2018-11-23 01:01:08,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 01:01:08,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-23 01:01:08,311 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2018-11-23 01:01:08,311 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2018-11-23 01:01:08,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 01:01:08,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-23 01:01:08,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 01:01:08,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 01:01:08,312 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2018-11-23 01:01:08,312 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2018-11-23 01:01:08,314 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-11-23 01:01:08,408 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_read_lock_returnLabel [2018-11-23 01:01:08,533 INFO L1415 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_write_lock_returnLabel [2018-11-23 01:01:08,554 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 01:01:08,554 INFO L280 CfgBuilder]: Removed 8 assue(true) statements. [2018-11-23 01:01:08,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:01:08 BoogieIcfgContainer [2018-11-23 01:01:08,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 01:01:08,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 01:01:08,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 01:01:08,557 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 01:01:08,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:01:07" (1/3) ... [2018-11-23 01:01:08,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322653f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:01:08, skipping insertion in model container [2018-11-23 01:01:08,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:01:08" (2/3) ... [2018-11-23 01:01:08,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322653f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:01:08, skipping insertion in model container [2018-11-23 01:01:08,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:01:08" (3/3) ... [2018-11-23 01:01:08,559 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock_false-unreach-call.i [2018-11-23 01:01:08,585 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,586 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,586 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,586 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,586 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,587 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,587 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,587 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,587 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,587 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,588 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,588 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,588 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,588 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,589 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,589 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,589 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,589 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,590 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,590 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,590 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,590 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,591 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,592 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,592 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,592 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,592 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,592 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,593 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,593 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,593 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,593 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,593 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,594 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:01:08,634 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-11-23 01:01:08,634 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 01:01:08,640 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-23 01:01:08,651 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-23 01:01:08,667 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 01:01:08,668 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 01:01:08,668 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 01:01:08,668 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 01:01:08,668 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 01:01:08,668 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 01:01:08,669 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 01:01:08,669 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 01:01:08,669 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 01:01:08,679 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84places, 93 transitions [2018-11-23 01:01:10,529 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26397 states. [2018-11-23 01:01:10,531 INFO L276 IsEmpty]: Start isEmpty. Operand 26397 states. [2018-11-23 01:01:10,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-23 01:01:10,538 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:01:10,539 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:01:10,542 INFO L423 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 01:01:10,547 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:01:10,547 INFO L82 PathProgramCache]: Analyzing trace with hash 563310493, now seen corresponding path program 1 times [2018-11-23 01:01:10,551 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 01:01:10,552 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03a0538d-998a-4f8f-ad29-368e67f47432/bin-2019/utaipan/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 01:01:10,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:01:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:01:10,615 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:01:10,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 01:01:10,666 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 01:01:10,671 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 01:01:10,671 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 01:01:10,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 01:01:10,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 01:01:10,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 01:01:10,685 INFO L87 Difference]: Start difference. First operand 26397 states. Second operand 4 states. [2018-11-23 01:01:11,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:01:11,192 INFO L93 Difference]: Finished difference Result 52906 states and 202299 transitions. [2018-11-23 01:01:11,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 01:01:11,193 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-23 01:01:11,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:01:11,384 INFO L225 Difference]: With dead ends: 52906 [2018-11-23 01:01:11,385 INFO L226 Difference]: Without dead ends: 36824 [2018-11-23 01:01:11,386 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-23 01:01:11,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36824 states. [2018-11-23 01:01:12,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36824 to 22832. [2018-11-23 01:01:12,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22832 states. [2018-11-23 01:01:12,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22832 states to 22832 states and 87504 transitions. [2018-11-23 01:01:12,291 INFO L78 Accepts]: Start accepts. Automaton has 22832 states and 87504 transitions. Word has length 23 [2018-11-23 01:01:12,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:01:12,292 INFO L480 AbstractCegarLoop]: Abstraction has 22832 states and 87504 transitions. [2018-11-23 01:01:12,292 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 01:01:12,292 INFO L276 IsEmpty]: Start isEmpty. Operand 22832 states and 87504 transitions. [2018-11-23 01:01:12,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-23 01:01:12,294 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:01:12,296 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:01:12,296 INFO L423 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 01:01:12,296 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:01:12,296 INFO L82 PathProgramCache]: Analyzing trace with hash 175754366, now seen corresponding path program 1 times [2018-11-23 01:01:12,297 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 01:01:12,297 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03a0538d-998a-4f8f-ad29-368e67f47432/bin-2019/utaipan/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 01:01:12,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:01:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:01:12,339 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:01:12,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 01:01:12,389 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 01:01:12,391 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 01:01:12,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 01:01:12,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 01:01:12,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 01:01:12,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 01:01:12,393 INFO L87 Difference]: Start difference. First operand 22832 states and 87504 transitions. Second operand 4 states. [2018-11-23 01:01:12,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:01:12,705 INFO L93 Difference]: Finished difference Result 44834 states and 165805 transitions. [2018-11-23 01:01:12,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 01:01:12,705 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-11-23 01:01:12,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:01:12,866 INFO L225 Difference]: With dead ends: 44834 [2018-11-23 01:01:12,866 INFO L226 Difference]: Without dead ends: 44474 [2018-11-23 01:01:12,867 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 01:01:13,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44474 states. [2018-11-23 01:01:13,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44474 to 24815. [2018-11-23 01:01:13,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24815 states. [2018-11-23 01:01:13,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24815 states to 24815 states and 92018 transitions. [2018-11-23 01:01:13,629 INFO L78 Accepts]: Start accepts. Automaton has 24815 states and 92018 transitions. Word has length 25 [2018-11-23 01:01:13,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:01:13,629 INFO L480 AbstractCegarLoop]: Abstraction has 24815 states and 92018 transitions. [2018-11-23 01:01:13,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 01:01:13,630 INFO L276 IsEmpty]: Start isEmpty. Operand 24815 states and 92018 transitions. [2018-11-23 01:01:13,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-23 01:01:13,632 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:01:13,632 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:01:13,632 INFO L423 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 01:01:13,633 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:01:13,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1318827774, now seen corresponding path program 2 times [2018-11-23 01:01:13,633 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 01:01:13,633 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03a0538d-998a-4f8f-ad29-368e67f47432/bin-2019/utaipan/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 01:01:13,653 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-23 01:01:13,673 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-23 01:01:13,673 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 01:01:13,676 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:01:13,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 01:01:13,695 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 01:01:13,697 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 01:01:13,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 01:01:13,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 01:01:13,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 01:01:13,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 01:01:13,698 INFO L87 Difference]: Start difference. First operand 24815 states and 92018 transitions. Second operand 3 states. [2018-11-23 01:01:13,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:01:13,773 INFO L93 Difference]: Finished difference Result 18827 states and 66927 transitions. [2018-11-23 01:01:13,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 01:01:13,774 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-11-23 01:01:13,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:01:13,807 INFO L225 Difference]: With dead ends: 18827 [2018-11-23 01:01:13,807 INFO L226 Difference]: Without dead ends: 18347 [2018-11-23 01:01:13,808 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 01:01:13,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18347 states. [2018-11-23 01:01:14,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18347 to 18347. [2018-11-23 01:01:14,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18347 states. [2018-11-23 01:01:14,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18347 states to 18347 states and 65335 transitions. [2018-11-23 01:01:14,290 INFO L78 Accepts]: Start accepts. Automaton has 18347 states and 65335 transitions. Word has length 25 [2018-11-23 01:01:14,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:01:14,290 INFO L480 AbstractCegarLoop]: Abstraction has 18347 states and 65335 transitions. [2018-11-23 01:01:14,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 01:01:14,290 INFO L276 IsEmpty]: Start isEmpty. Operand 18347 states and 65335 transitions. [2018-11-23 01:01:14,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-23 01:01:14,292 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:01:14,293 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:01:14,293 INFO L423 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 01:01:14,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:01:14,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1891005508, now seen corresponding path program 1 times [2018-11-23 01:01:14,293 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 01:01:14,294 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03a0538d-998a-4f8f-ad29-368e67f47432/bin-2019/utaipan/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 01:01:14,314 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 01:01:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:01:14,341 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:01:14,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 01:01:14,355 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 01:01:14,366 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 01:01:14,366 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 01:01:14,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 01:01:14,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 01:01:14,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 01:01:14,367 INFO L87 Difference]: Start difference. First operand 18347 states and 65335 transitions. Second operand 4 states. [2018-11-23 01:01:14,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:01:14,547 INFO L93 Difference]: Finished difference Result 32444 states and 115032 transitions. [2018-11-23 01:01:14,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 01:01:14,548 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-11-23 01:01:14,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:01:14,596 INFO L225 Difference]: With dead ends: 32444 [2018-11-23 01:01:14,597 INFO L226 Difference]: Without dead ends: 25844 [2018-11-23 01:01:14,597 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-23 01:01:14,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25844 states. [2018-11-23 01:01:14,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25844 to 15197. [2018-11-23 01:01:14,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15197 states. [2018-11-23 01:01:14,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15197 states to 15197 states and 54478 transitions. [2018-11-23 01:01:14,900 INFO L78 Accepts]: Start accepts. Automaton has 15197 states and 54478 transitions. Word has length 29 [2018-11-23 01:01:14,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:01:14,901 INFO L480 AbstractCegarLoop]: Abstraction has 15197 states and 54478 transitions. [2018-11-23 01:01:14,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 01:01:14,901 INFO L276 IsEmpty]: Start isEmpty. Operand 15197 states and 54478 transitions. [2018-11-23 01:01:14,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-23 01:01:14,903 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:01:14,904 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:01:14,904 INFO L423 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 01:01:14,904 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:01:14,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1356359066, now seen corresponding path program 1 times [2018-11-23 01:01:14,904 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 01:01:14,904 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03a0538d-998a-4f8f-ad29-368e67f47432/bin-2019/utaipan/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 01:01:14,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:01:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:01:14,956 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:01:14,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 01:01:14,979 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 01:01:14,981 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 01:01:14,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 01:01:14,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 01:01:14,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 01:01:14,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 01:01:14,982 INFO L87 Difference]: Start difference. First operand 15197 states and 54478 transitions. Second operand 5 states. [2018-11-23 01:01:15,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:01:15,069 INFO L93 Difference]: Finished difference Result 8213 states and 26746 transitions. [2018-11-23 01:01:15,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 01:01:15,070 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2018-11-23 01:01:15,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:01:15,085 INFO L225 Difference]: With dead ends: 8213 [2018-11-23 01:01:15,085 INFO L226 Difference]: Without dead ends: 8213 [2018-11-23 01:01:15,085 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 01:01:15,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8213 states. [2018-11-23 01:01:15,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8213 to 7637. [2018-11-23 01:01:15,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7637 states. [2018-11-23 01:01:15,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7637 states to 7637 states and 24730 transitions. [2018-11-23 01:01:15,230 INFO L78 Accepts]: Start accepts. Automaton has 7637 states and 24730 transitions. Word has length 33 [2018-11-23 01:01:15,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:01:15,230 INFO L480 AbstractCegarLoop]: Abstraction has 7637 states and 24730 transitions. [2018-11-23 01:01:15,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 01:01:15,231 INFO L276 IsEmpty]: Start isEmpty. Operand 7637 states and 24730 transitions. [2018-11-23 01:01:15,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-23 01:01:15,236 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:01:15,236 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:01:15,236 INFO L423 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 01:01:15,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:01:15,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1715420402, now seen corresponding path program 1 times [2018-11-23 01:01:15,237 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 01:01:15,237 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03a0538d-998a-4f8f-ad29-368e67f47432/bin-2019/utaipan/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 01:01:15,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:01:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:01:15,298 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:01:15,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 01:01:15,329 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (7)] Exception during sending of exit command (exit): Broken pipe [2018-11-23 01:01:15,338 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 01:01:15,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 01:01:15,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 01:01:15,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 01:01:15,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 01:01:15,340 INFO L87 Difference]: Start difference. First operand 7637 states and 24730 transitions. Second operand 5 states. [2018-11-23 01:01:15,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:01:15,450 INFO L93 Difference]: Finished difference Result 11390 states and 37095 transitions. [2018-11-23 01:01:15,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 01:01:15,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2018-11-23 01:01:15,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:01:15,469 INFO L225 Difference]: With dead ends: 11390 [2018-11-23 01:01:15,469 INFO L226 Difference]: Without dead ends: 10751 [2018-11-23 01:01:15,469 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-23 01:01:15,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10751 states. [2018-11-23 01:01:15,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10751 to 7322. [2018-11-23 01:01:15,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7322 states. [2018-11-23 01:01:15,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7322 states to 7322 states and 23826 transitions. [2018-11-23 01:01:15,620 INFO L78 Accepts]: Start accepts. Automaton has 7322 states and 23826 transitions. Word has length 38 [2018-11-23 01:01:15,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:01:15,620 INFO L480 AbstractCegarLoop]: Abstraction has 7322 states and 23826 transitions. [2018-11-23 01:01:15,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 01:01:15,621 INFO L276 IsEmpty]: Start isEmpty. Operand 7322 states and 23826 transitions. [2018-11-23 01:01:15,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-23 01:01:15,624 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:01:15,624 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:01:15,625 INFO L423 AbstractCegarLoop]: === Iteration 7 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 01:01:15,625 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:01:15,625 INFO L82 PathProgramCache]: Analyzing trace with hash 140136184, now seen corresponding path program 2 times [2018-11-23 01:01:15,626 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 01:01:15,626 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03a0538d-998a-4f8f-ad29-368e67f47432/bin-2019/utaipan/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 01:01:15,750 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-23 01:01:15,795 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-23 01:01:15,795 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2018-11-23 01:01:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:01:16,091 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 01:01:16,092 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:110) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:87) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.computeIcfgProgramExecution(IcfgProgramExecutionBuilder.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.getIcfgProgramExecution(IcfgProgramExecutionBuilder.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecution(TraceCheck.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:344) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-11-23 01:01:16,094 INFO L168 Benchmark]: Toolchain (without parser) took 8324.94 ms. Allocated memory was 1.0 GB in the beginning and 1.9 GB in the end (delta: 831.5 MB). Free memory was 943.3 MB in the beginning and 1.4 GB in the end (delta: -486.3 MB). Peak memory consumption was 345.2 MB. Max. memory is 11.5 GB. [2018-11-23 01:01:16,096 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 01:01:16,096 INFO L168 Benchmark]: CACSL2BoogieTranslator took 396.76 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 MB in the beginning and 911.1 MB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2018-11-23 01:01:16,096 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 911.1 MB in the beginning and 1.1 GB in the end (delta: -195.3 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. [2018-11-23 01:01:16,097 INFO L168 Benchmark]: Boogie Preprocessor took 22.09 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 01:01:16,097 INFO L168 Benchmark]: RCFGBuilder took 282.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 11.5 GB. [2018-11-23 01:01:16,098 INFO L168 Benchmark]: TraceAbstraction took 7539.28 ms. Allocated memory was 1.1 GB in the beginning and 1.9 GB in the end (delta: 712.0 MB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -355.1 MB). Peak memory consumption was 356.9 MB. Max. memory is 11.5 GB. [2018-11-23 01:01:16,101 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 396.76 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 MB in the beginning and 911.1 MB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 81.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 911.1 MB in the beginning and 1.1 GB in the end (delta: -195.3 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.09 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 282.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7539.28 ms. Allocated memory was 1.1 GB in the beginning and 1.9 GB in the end (delta: 712.0 MB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -355.1 MB). Peak memory consumption was 356.9 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...