./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/pthread-atomic/read_write_lock_false-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2e94e6aa Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/pthread-atomic/read_write_lock_false-unreach-call.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7a44ec3fe14113a3aba74e37fda369041ad122ce .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/pthread-atomic/read_write_lock_false-unreach-call.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7a44ec3fe14113a3aba74e37fda369041ad122ce ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2018-12-31 17:29:11,824 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 17:29:11,826 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 17:29:11,843 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 17:29:11,845 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 17:29:11,846 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 17:29:11,848 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 17:29:11,851 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 17:29:11,853 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 17:29:11,857 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 17:29:11,860 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 17:29:11,861 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 17:29:11,862 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 17:29:11,865 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 17:29:11,872 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 17:29:11,874 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 17:29:11,875 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 17:29:11,880 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 17:29:11,884 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 17:29:11,886 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 17:29:11,886 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 17:29:11,888 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 17:29:11,890 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 17:29:11,890 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 17:29:11,890 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 17:29:11,891 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 17:29:11,892 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 17:29:11,893 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 17:29:11,893 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 17:29:11,894 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 17:29:11,894 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 17:29:11,895 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 17:29:11,895 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 17:29:11,895 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 17:29:11,896 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 17:29:11,897 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 17:29:11,897 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-31 17:29:11,927 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 17:29:11,927 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 17:29:11,929 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 17:29:11,929 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 17:29:11,929 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 17:29:11,929 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 17:29:11,929 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 17:29:11,930 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-31 17:29:11,931 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 17:29:11,931 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 17:29:11,931 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 17:29:11,931 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 17:29:11,931 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 17:29:11,931 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 17:29:11,932 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 17:29:11,932 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 17:29:11,932 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 17:29:11,932 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 17:29:11,932 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 17:29:11,933 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 17:29:11,933 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 17:29:11,933 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 17:29:11,933 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 17:29:11,933 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 17:29:11,933 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 17:29:11,934 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-31 17:29:11,934 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 17:29:11,934 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-31 17:29:11,934 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a44ec3fe14113a3aba74e37fda369041ad122ce [2018-12-31 17:29:11,995 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 17:29:12,010 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 17:29:12,016 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 17:29:12,018 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 17:29:12,019 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 17:29:12,020 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/pthread-atomic/read_write_lock_false-unreach-call.i [2018-12-31 17:29:12,088 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b1208d77/c1109e18316e42f28ed5d29a76cc3834/FLAG7a380bf75 [2018-12-31 17:29:12,658 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 17:29:12,659 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/pthread-atomic/read_write_lock_false-unreach-call.i [2018-12-31 17:29:12,672 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b1208d77/c1109e18316e42f28ed5d29a76cc3834/FLAG7a380bf75 [2018-12-31 17:29:12,942 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b1208d77/c1109e18316e42f28ed5d29a76cc3834 [2018-12-31 17:29:12,946 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 17:29:12,948 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 17:29:12,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 17:29:12,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 17:29:12,953 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 17:29:12,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 05:29:12" (1/1) ... [2018-12-31 17:29:12,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23ae614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:29:12, skipping insertion in model container [2018-12-31 17:29:12,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 05:29:12" (1/1) ... [2018-12-31 17:29:12,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 17:29:13,018 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 17:29:13,420 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 17:29:13,437 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 17:29:13,593 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 17:29:13,684 INFO L195 MainTranslator]: Completed translation [2018-12-31 17:29:13,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:29:13 WrapperNode [2018-12-31 17:29:13,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 17:29:13,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 17:29:13,686 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 17:29:13,686 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 17:29:13,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:29:13" (1/1) ... [2018-12-31 17:29:13,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:29:13" (1/1) ... [2018-12-31 17:29:13,758 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 17:29:13,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 17:29:13,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 17:29:13,762 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 17:29:13,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:29:13" (1/1) ... [2018-12-31 17:29:13,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:29:13" (1/1) ... [2018-12-31 17:29:13,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:29:13" (1/1) ... [2018-12-31 17:29:13,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:29:13" (1/1) ... [2018-12-31 17:29:13,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:29:13" (1/1) ... [2018-12-31 17:29:13,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:29:13" (1/1) ... [2018-12-31 17:29:13,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:29:13" (1/1) ... [2018-12-31 17:29:13,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 17:29:13,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 17:29:13,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 17:29:13,808 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 17:29:13,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:29:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 17:29:13,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-31 17:29:13,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-31 17:29:13,884 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2018-12-31 17:29:13,884 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2018-12-31 17:29:13,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2018-12-31 17:29:13,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-31 17:29:13,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 17:29:13,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 17:29:13,886 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2018-12-31 17:29:13,886 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2018-12-31 17:29:13,888 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-31 17:29:14,088 INFO L1421 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_read_lock_returnLabel [2018-12-31 17:29:14,355 INFO L1421 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_write_lock_returnLabel [2018-12-31 17:29:14,366 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 17:29:14,366 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-31 17:29:14,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 05:29:14 BoogieIcfgContainer [2018-12-31 17:29:14,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 17:29:14,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 17:29:14,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 17:29:14,373 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 17:29:14,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 05:29:12" (1/3) ... [2018-12-31 17:29:14,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f240e08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 05:29:14, skipping insertion in model container [2018-12-31 17:29:14,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:29:13" (2/3) ... [2018-12-31 17:29:14,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f240e08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 05:29:14, skipping insertion in model container [2018-12-31 17:29:14,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 05:29:14" (3/3) ... [2018-12-31 17:29:14,377 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock_false-unreach-call.i [2018-12-31 17:29:14,414 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,415 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,415 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,415 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,416 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,416 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,416 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,417 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,417 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,417 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,417 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,418 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,418 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,418 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,418 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,418 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,419 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,419 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,419 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,419 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,420 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,420 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,420 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,420 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,420 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,421 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,421 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,421 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,421 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,422 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,422 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,422 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,422 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,422 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:14,555 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-31 17:29:14,555 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 17:29:14,565 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-31 17:29:14,584 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-31 17:29:14,614 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 17:29:14,615 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 17:29:14,615 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 17:29:14,615 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 17:29:14,615 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 17:29:14,615 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 17:29:14,615 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 17:29:14,616 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 17:29:14,616 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 17:29:14,628 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84places, 93 transitions [2018-12-31 17:29:16,509 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26397 states. [2018-12-31 17:29:16,512 INFO L276 IsEmpty]: Start isEmpty. Operand 26397 states. [2018-12-31 17:29:16,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-31 17:29:16,523 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:29:16,524 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:29:16,527 INFO L423 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:29:16,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:29:16,534 INFO L82 PathProgramCache]: Analyzing trace with hash 563310493, now seen corresponding path program 1 times [2018-12-31 17:29:16,536 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:29:16,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:29:16,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:29:16,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:29:16,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:29:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:29:16,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:29:16,854 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 17:29:16,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-31 17:29:16,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-31 17:29:16,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-31 17:29:16,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-31 17:29:16,873 INFO L87 Difference]: Start difference. First operand 26397 states. Second operand 4 states. [2018-12-31 17:29:17,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:29:17,929 INFO L93 Difference]: Finished difference Result 52906 states and 202299 transitions. [2018-12-31 17:29:17,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-31 17:29:17,931 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-12-31 17:29:17,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:29:18,291 INFO L225 Difference]: With dead ends: 52906 [2018-12-31 17:29:18,291 INFO L226 Difference]: Without dead ends: 36824 [2018-12-31 17:29:18,293 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-31 17:29:18,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36824 states. [2018-12-31 17:29:19,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36824 to 22832. [2018-12-31 17:29:19,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22832 states. [2018-12-31 17:29:20,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22832 states to 22832 states and 87504 transitions. [2018-12-31 17:29:20,045 INFO L78 Accepts]: Start accepts. Automaton has 22832 states and 87504 transitions. Word has length 23 [2018-12-31 17:29:20,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:29:20,045 INFO L480 AbstractCegarLoop]: Abstraction has 22832 states and 87504 transitions. [2018-12-31 17:29:20,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-31 17:29:20,045 INFO L276 IsEmpty]: Start isEmpty. Operand 22832 states and 87504 transitions. [2018-12-31 17:29:20,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-31 17:29:20,052 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:29:20,052 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:29:20,052 INFO L423 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:29:20,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:29:20,053 INFO L82 PathProgramCache]: Analyzing trace with hash 175754366, now seen corresponding path program 1 times [2018-12-31 17:29:20,053 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:29:20,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:29:20,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:29:20,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:29:20,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:29:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:29:20,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:29:20,195 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 17:29:20,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-31 17:29:20,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-31 17:29:20,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-31 17:29:20,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-31 17:29:20,198 INFO L87 Difference]: Start difference. First operand 22832 states and 87504 transitions. Second operand 4 states. [2018-12-31 17:29:20,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:29:20,885 INFO L93 Difference]: Finished difference Result 36860 states and 131462 transitions. [2018-12-31 17:29:20,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-31 17:29:20,886 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-12-31 17:29:20,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:29:21,066 INFO L225 Difference]: With dead ends: 36860 [2018-12-31 17:29:21,066 INFO L226 Difference]: Without dead ends: 36500 [2018-12-31 17:29:21,068 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-31 17:29:21,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36500 states. [2018-12-31 17:29:22,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36500 to 24815. [2018-12-31 17:29:22,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24815 states. [2018-12-31 17:29:22,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24815 states to 24815 states and 89636 transitions. [2018-12-31 17:29:22,437 INFO L78 Accepts]: Start accepts. Automaton has 24815 states and 89636 transitions. Word has length 25 [2018-12-31 17:29:22,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:29:22,438 INFO L480 AbstractCegarLoop]: Abstraction has 24815 states and 89636 transitions. [2018-12-31 17:29:22,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-31 17:29:22,438 INFO L276 IsEmpty]: Start isEmpty. Operand 24815 states and 89636 transitions. [2018-12-31 17:29:22,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-31 17:29:22,442 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:29:22,442 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:29:22,442 INFO L423 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:29:22,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:29:22,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1318827774, now seen corresponding path program 2 times [2018-12-31 17:29:22,443 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:29:22,443 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:29:22,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:29:22,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:29:22,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:29:22,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:29:22,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:29:22,646 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 17:29:22,646 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-31 17:29:22,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-31 17:29:22,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-31 17:29:22,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-31 17:29:22,647 INFO L87 Difference]: Start difference. First operand 24815 states and 89636 transitions. Second operand 5 states. [2018-12-31 17:29:22,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:29:22,775 INFO L93 Difference]: Finished difference Result 14369 states and 47935 transitions. [2018-12-31 17:29:22,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-31 17:29:22,776 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-12-31 17:29:22,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:29:22,845 INFO L225 Difference]: With dead ends: 14369 [2018-12-31 17:29:22,845 INFO L226 Difference]: Without dead ends: 13889 [2018-12-31 17:29:22,846 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-31 17:29:22,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13889 states. [2018-12-31 17:29:23,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13889 to 13889. [2018-12-31 17:29:23,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13889 states. [2018-12-31 17:29:23,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13889 states to 13889 states and 46343 transitions. [2018-12-31 17:29:23,186 INFO L78 Accepts]: Start accepts. Automaton has 13889 states and 46343 transitions. Word has length 25 [2018-12-31 17:29:23,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:29:23,187 INFO L480 AbstractCegarLoop]: Abstraction has 13889 states and 46343 transitions. [2018-12-31 17:29:23,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-31 17:29:23,187 INFO L276 IsEmpty]: Start isEmpty. Operand 13889 states and 46343 transitions. [2018-12-31 17:29:23,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-31 17:29:23,191 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:29:23,191 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:29:23,192 INFO L423 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:29:23,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:29:23,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1891005508, now seen corresponding path program 1 times [2018-12-31 17:29:23,192 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:29:23,192 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:29:23,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:29:23,197 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 17:29:23,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:29:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:29:23,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:29:23,316 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 17:29:23,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-31 17:29:23,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-31 17:29:23,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-31 17:29:23,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-31 17:29:23,319 INFO L87 Difference]: Start difference. First operand 13889 states and 46343 transitions. Second operand 4 states. [2018-12-31 17:29:24,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:29:24,211 INFO L93 Difference]: Finished difference Result 14756 states and 48986 transitions. [2018-12-31 17:29:24,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-31 17:29:24,212 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-12-31 17:29:24,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:29:24,241 INFO L225 Difference]: With dead ends: 14756 [2018-12-31 17:29:24,242 INFO L226 Difference]: Without dead ends: 8996 [2018-12-31 17:29:24,242 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-31 17:29:24,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8996 states. [2018-12-31 17:29:24,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8996 to 7637. [2018-12-31 17:29:24,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7637 states. [2018-12-31 17:29:24,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7637 states to 7637 states and 24730 transitions. [2018-12-31 17:29:24,437 INFO L78 Accepts]: Start accepts. Automaton has 7637 states and 24730 transitions. Word has length 29 [2018-12-31 17:29:24,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:29:24,438 INFO L480 AbstractCegarLoop]: Abstraction has 7637 states and 24730 transitions. [2018-12-31 17:29:24,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-31 17:29:24,438 INFO L276 IsEmpty]: Start isEmpty. Operand 7637 states and 24730 transitions. [2018-12-31 17:29:24,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-31 17:29:24,447 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:29:24,447 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:29:24,447 INFO L423 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:29:24,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:29:24,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1715420402, now seen corresponding path program 1 times [2018-12-31 17:29:24,448 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:29:24,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:29:24,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:29:24,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:29:24,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:29:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:29:24,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:29:24,828 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 17:29:24,828 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-31 17:29:24,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-31 17:29:24,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-31 17:29:24,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-31 17:29:24,829 INFO L87 Difference]: Start difference. First operand 7637 states and 24730 transitions. Second operand 6 states. [2018-12-31 17:29:25,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:29:25,321 INFO L93 Difference]: Finished difference Result 8537 states and 27535 transitions. [2018-12-31 17:29:25,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-31 17:29:25,322 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2018-12-31 17:29:25,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:29:25,340 INFO L225 Difference]: With dead ends: 8537 [2018-12-31 17:29:25,340 INFO L226 Difference]: Without dead ends: 7898 [2018-12-31 17:29:25,341 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-12-31 17:29:25,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7898 states. [2018-12-31 17:29:25,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7898 to 7322. [2018-12-31 17:29:25,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7322 states. [2018-12-31 17:29:25,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7322 states to 7322 states and 23826 transitions. [2018-12-31 17:29:25,515 INFO L78 Accepts]: Start accepts. Automaton has 7322 states and 23826 transitions. Word has length 38 [2018-12-31 17:29:25,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:29:25,516 INFO L480 AbstractCegarLoop]: Abstraction has 7322 states and 23826 transitions. [2018-12-31 17:29:25,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-31 17:29:25,516 INFO L276 IsEmpty]: Start isEmpty. Operand 7322 states and 23826 transitions. [2018-12-31 17:29:25,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-31 17:29:25,528 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:29:25,528 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:29:25,529 INFO L423 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:29:25,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:29:25,529 INFO L82 PathProgramCache]: Analyzing trace with hash 140136184, now seen corresponding path program 2 times [2018-12-31 17:29:25,529 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:29:25,529 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:29:25,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:29:25,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:29:25,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:29:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 17:29:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 17:29:25,663 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:110) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:87) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.computeIcfgProgramExecution(IcfgProgramExecutionBuilder.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.getIcfgProgramExecution(IcfgProgramExecutionBuilder.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecution(TraceCheck.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:344) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-12-31 17:29:25,675 INFO L168 Benchmark]: Toolchain (without parser) took 12728.52 ms. Allocated memory was 1.0 GB in the beginning and 1.9 GB in the end (delta: 826.3 MB). Free memory was 954.1 MB in the beginning and 1.1 GB in the end (delta: -183.5 MB). Peak memory consumption was 642.7 MB. Max. memory is 11.5 GB. [2018-12-31 17:29:25,684 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 17:29:25,684 INFO L168 Benchmark]: CACSL2BoogieTranslator took 736.82 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 954.1 MB in the beginning and 1.1 GB in the end (delta: -130.1 MB). Peak memory consumption was 31.4 MB. Max. memory is 11.5 GB. [2018-12-31 17:29:25,686 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.91 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 17:29:25,689 INFO L168 Benchmark]: Boogie Preprocessor took 46.21 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 17:29:25,690 INFO L168 Benchmark]: RCFGBuilder took 559.62 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: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2018-12-31 17:29:25,692 INFO L168 Benchmark]: TraceAbstraction took 11305.44 ms. Allocated memory was 1.1 GB in the beginning and 1.9 GB in the end (delta: 714.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -79.6 MB). Peak memory consumption was 635.0 MB. Max. memory is 11.5 GB. [2018-12-31 17:29:25,700 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 736.82 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 954.1 MB in the beginning and 1.1 GB in the end (delta: -130.1 MB). Peak memory consumption was 31.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 74.91 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. * Boogie Preprocessor took 46.21 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 559.62 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: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 11305.44 ms. Allocated memory was 1.1 GB in the beginning and 1.9 GB in the end (delta: 714.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -79.6 MB). Peak memory consumption was 635.0 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 0.1.24-2e94e6a [2018-12-31 17:29:28,084 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 17:29:28,086 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 17:29:28,099 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 17:29:28,099 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 17:29:28,101 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 17:29:28,102 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 17:29:28,105 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 17:29:28,107 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 17:29:28,108 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 17:29:28,109 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 17:29:28,109 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 17:29:28,111 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 17:29:28,112 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 17:29:28,113 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 17:29:28,114 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 17:29:28,116 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 17:29:28,118 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 17:29:28,120 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 17:29:28,122 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 17:29:28,123 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 17:29:28,125 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 17:29:28,128 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 17:29:28,129 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 17:29:28,129 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 17:29:28,130 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 17:29:28,132 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 17:29:28,133 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 17:29:28,134 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 17:29:28,136 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 17:29:28,136 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 17:29:28,137 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 17:29:28,137 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 17:29:28,138 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 17:29:28,139 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 17:29:28,140 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 17:29:28,140 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-12-31 17:29:28,157 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 17:29:28,157 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 17:29:28,159 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 17:29:28,159 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 17:29:28,160 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 17:29:28,160 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 17:29:28,160 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 17:29:28,160 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 17:29:28,160 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 17:29:28,161 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 17:29:28,161 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 17:29:28,161 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 17:29:28,161 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-31 17:29:28,161 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-31 17:29:28,163 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 17:29:28,163 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 17:29:28,163 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 17:29:28,164 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 17:29:28,164 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 17:29:28,164 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 17:29:28,164 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 17:29:28,164 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 17:29:28,164 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 17:29:28,166 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 17:29:28,166 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 17:29:28,166 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 17:29:28,166 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-31 17:29:28,166 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 17:29:28,166 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-31 17:29:28,167 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-31 17:29:28,167 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a44ec3fe14113a3aba74e37fda369041ad122ce [2018-12-31 17:29:28,204 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 17:29:28,217 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 17:29:28,220 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 17:29:28,222 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 17:29:28,222 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 17:29:28,223 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/pthread-atomic/read_write_lock_false-unreach-call.i [2018-12-31 17:29:28,279 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed18c066a/51d19ebdb0c248b99e977ec8bc173cc8/FLAG94d9a1030 [2018-12-31 17:29:28,821 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 17:29:28,823 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/pthread-atomic/read_write_lock_false-unreach-call.i [2018-12-31 17:29:28,841 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed18c066a/51d19ebdb0c248b99e977ec8bc173cc8/FLAG94d9a1030 [2018-12-31 17:29:29,060 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed18c066a/51d19ebdb0c248b99e977ec8bc173cc8 [2018-12-31 17:29:29,065 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 17:29:29,067 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 17:29:29,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 17:29:29,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 17:29:29,073 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 17:29:29,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 05:29:29" (1/1) ... [2018-12-31 17:29:29,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@356421ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:29:29, skipping insertion in model container [2018-12-31 17:29:29,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 05:29:29" (1/1) ... [2018-12-31 17:29:29,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 17:29:29,142 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 17:29:29,600 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 17:29:29,619 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 17:29:29,675 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 17:29:29,833 INFO L195 MainTranslator]: Completed translation [2018-12-31 17:29:29,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:29:29 WrapperNode [2018-12-31 17:29:29,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 17:29:29,835 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 17:29:29,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 17:29:29,836 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 17:29:29,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:29:29" (1/1) ... [2018-12-31 17:29:29,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:29:29" (1/1) ... [2018-12-31 17:29:29,913 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 17:29:29,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 17:29:29,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 17:29:29,914 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 17:29:29,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:29:29" (1/1) ... [2018-12-31 17:29:29,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:29:29" (1/1) ... [2018-12-31 17:29:29,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:29:29" (1/1) ... [2018-12-31 17:29:29,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:29:29" (1/1) ... [2018-12-31 17:29:29,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:29:29" (1/1) ... [2018-12-31 17:29:29,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:29:29" (1/1) ... [2018-12-31 17:29:29,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:29:29" (1/1) ... [2018-12-31 17:29:29,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 17:29:29,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 17:29:29,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 17:29:29,949 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 17:29:29,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:29:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 17:29:30,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-31 17:29:30,007 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2018-12-31 17:29:30,008 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2018-12-31 17:29:30,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2018-12-31 17:29:30,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-31 17:29:30,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-31 17:29:30,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 17:29:30,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 17:29:30,009 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2018-12-31 17:29:30,009 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2018-12-31 17:29:30,011 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-31 17:29:30,202 INFO L1421 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_read_lock_returnLabel [2018-12-31 17:29:30,566 INFO L1421 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_write_lock_returnLabel [2018-12-31 17:29:30,576 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 17:29:30,577 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-31 17:29:30,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 05:29:30 BoogieIcfgContainer [2018-12-31 17:29:30,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 17:29:30,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 17:29:30,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 17:29:30,582 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 17:29:30,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 05:29:29" (1/3) ... [2018-12-31 17:29:30,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d838395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 05:29:30, skipping insertion in model container [2018-12-31 17:29:30,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:29:29" (2/3) ... [2018-12-31 17:29:30,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d838395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 05:29:30, skipping insertion in model container [2018-12-31 17:29:30,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 05:29:30" (3/3) ... [2018-12-31 17:29:30,586 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock_false-unreach-call.i [2018-12-31 17:29:30,632 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,632 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,632 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,632 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,632 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,635 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,635 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,635 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,636 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,637 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,637 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,637 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,637 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,637 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,638 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,638 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,638 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,638 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,639 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,641 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,641 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,642 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,642 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,643 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,644 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,644 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,644 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,644 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,645 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,646 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,646 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,647 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,647 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,648 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:29:30,800 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-31 17:29:30,800 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 17:29:30,810 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-31 17:29:30,829 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-31 17:29:30,856 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 17:29:30,857 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 17:29:30,857 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 17:29:30,858 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 17:29:30,858 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 17:29:30,858 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 17:29:30,858 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 17:29:30,858 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 17:29:30,858 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 17:29:30,871 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84places, 93 transitions [2018-12-31 17:29:32,998 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26397 states. [2018-12-31 17:29:33,000 INFO L276 IsEmpty]: Start isEmpty. Operand 26397 states. [2018-12-31 17:29:33,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-31 17:29:33,011 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:29:33,012 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:29:33,014 INFO L423 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:29:33,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:29:33,019 INFO L82 PathProgramCache]: Analyzing trace with hash 563310493, now seen corresponding path program 1 times [2018-12-31 17:29:33,024 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-31 17:29:33,024 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-31 17:29:33,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:29:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:29:33,111 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 17:29:33,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:29:33,212 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [MP cvc4 --incremental --print-success --lang smt --rewrite-divk (2)] Exception during sending of exit command (exit): Broken pipe [2018-12-31 17:29:33,224 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 17:29:33,224 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-31 17:29:33,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-31 17:29:33,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-31 17:29:33,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-31 17:29:33,252 INFO L87 Difference]: Start difference. First operand 26397 states. Second operand 4 states. [2018-12-31 17:29:34,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:29:34,116 INFO L93 Difference]: Finished difference Result 52906 states and 202299 transitions. [2018-12-31 17:29:34,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-31 17:29:34,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-12-31 17:29:34,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:29:34,407 INFO L225 Difference]: With dead ends: 52906 [2018-12-31 17:29:34,407 INFO L226 Difference]: Without dead ends: 36824 [2018-12-31 17:29:34,409 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-31 17:29:34,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36824 states. [2018-12-31 17:29:35,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36824 to 22832. [2018-12-31 17:29:35,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22832 states. [2018-12-31 17:29:36,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22832 states to 22832 states and 87504 transitions. [2018-12-31 17:29:36,009 INFO L78 Accepts]: Start accepts. Automaton has 22832 states and 87504 transitions. Word has length 23 [2018-12-31 17:29:36,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:29:36,010 INFO L480 AbstractCegarLoop]: Abstraction has 22832 states and 87504 transitions. [2018-12-31 17:29:36,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-31 17:29:36,011 INFO L276 IsEmpty]: Start isEmpty. Operand 22832 states and 87504 transitions. [2018-12-31 17:29:36,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-31 17:29:36,018 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:29:36,018 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:29:36,018 INFO L423 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:29:36,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:29:36,019 INFO L82 PathProgramCache]: Analyzing trace with hash 175754366, now seen corresponding path program 1 times [2018-12-31 17:29:36,019 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-31 17:29:36,020 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-31 17:29:36,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:29:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:29:36,111 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 17:29:36,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:29:36,234 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-31 17:29:36,236 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 17:29:36,237 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-31 17:29:36,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-31 17:29:36,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-31 17:29:36,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-31 17:29:36,240 INFO L87 Difference]: Start difference. First operand 22832 states and 87504 transitions. Second operand 4 states. [2018-12-31 17:29:37,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:29:37,252 INFO L93 Difference]: Finished difference Result 44834 states and 165805 transitions. [2018-12-31 17:29:37,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-31 17:29:37,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-12-31 17:29:37,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:29:37,473 INFO L225 Difference]: With dead ends: 44834 [2018-12-31 17:29:37,473 INFO L226 Difference]: Without dead ends: 44474 [2018-12-31 17:29:37,474 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-31 17:29:38,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44474 states. [2018-12-31 17:29:38,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44474 to 24815. [2018-12-31 17:29:38,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24815 states. [2018-12-31 17:29:38,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24815 states to 24815 states and 92018 transitions. [2018-12-31 17:29:38,905 INFO L78 Accepts]: Start accepts. Automaton has 24815 states and 92018 transitions. Word has length 25 [2018-12-31 17:29:38,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:29:38,905 INFO L480 AbstractCegarLoop]: Abstraction has 24815 states and 92018 transitions. [2018-12-31 17:29:38,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-31 17:29:38,906 INFO L276 IsEmpty]: Start isEmpty. Operand 24815 states and 92018 transitions. [2018-12-31 17:29:38,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-31 17:29:38,910 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:29:38,910 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:29:38,910 INFO L423 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:29:38,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:29:38,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1318827774, now seen corresponding path program 2 times [2018-12-31 17:29:38,912 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-31 17:29:38,912 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-31 17:29:38,944 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-12-31 17:29:38,978 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-12-31 17:29:38,978 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 17:29:38,981 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 17:29:39,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:29:39,031 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-31 17:29:39,033 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 17:29:39,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-31 17:29:39,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-31 17:29:39,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-31 17:29:39,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-31 17:29:39,034 INFO L87 Difference]: Start difference. First operand 24815 states and 92018 transitions. Second operand 3 states. [2018-12-31 17:29:39,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:29:39,261 INFO L93 Difference]: Finished difference Result 18827 states and 66927 transitions. [2018-12-31 17:29:39,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-31 17:29:39,263 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-12-31 17:29:39,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:29:39,320 INFO L225 Difference]: With dead ends: 18827 [2018-12-31 17:29:39,320 INFO L226 Difference]: Without dead ends: 18347 [2018-12-31 17:29:39,320 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-31 17:29:39,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18347 states. [2018-12-31 17:29:40,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18347 to 18347. [2018-12-31 17:29:40,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18347 states. [2018-12-31 17:29:40,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18347 states to 18347 states and 65335 transitions. [2018-12-31 17:29:40,258 INFO L78 Accepts]: Start accepts. Automaton has 18347 states and 65335 transitions. Word has length 25 [2018-12-31 17:29:40,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:29:40,260 INFO L480 AbstractCegarLoop]: Abstraction has 18347 states and 65335 transitions. [2018-12-31 17:29:40,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-31 17:29:40,260 INFO L276 IsEmpty]: Start isEmpty. Operand 18347 states and 65335 transitions. [2018-12-31 17:29:40,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-31 17:29:40,268 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:29:40,268 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:29:40,269 INFO L423 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:29:40,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:29:40,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1891005508, now seen corresponding path program 1 times [2018-12-31 17:29:40,269 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-31 17:29:40,269 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-31 17:29:40,307 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 17:29:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:29:40,347 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 17:29:40,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:29:40,454 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-31 17:29:40,456 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 17:29:40,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-31 17:29:40,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-31 17:29:40,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-31 17:29:40,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-31 17:29:40,457 INFO L87 Difference]: Start difference. First operand 18347 states and 65335 transitions. Second operand 4 states. [2018-12-31 17:29:41,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:29:41,327 INFO L93 Difference]: Finished difference Result 32444 states and 115032 transitions. [2018-12-31 17:29:41,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-31 17:29:41,329 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-12-31 17:29:41,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:29:41,416 INFO L225 Difference]: With dead ends: 32444 [2018-12-31 17:29:41,416 INFO L226 Difference]: Without dead ends: 25844 [2018-12-31 17:29:41,416 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-31 17:29:41,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25844 states. [2018-12-31 17:29:41,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25844 to 15197. [2018-12-31 17:29:41,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15197 states. [2018-12-31 17:29:41,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15197 states to 15197 states and 54478 transitions. [2018-12-31 17:29:41,940 INFO L78 Accepts]: Start accepts. Automaton has 15197 states and 54478 transitions. Word has length 29 [2018-12-31 17:29:41,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:29:41,942 INFO L480 AbstractCegarLoop]: Abstraction has 15197 states and 54478 transitions. [2018-12-31 17:29:41,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-31 17:29:41,942 INFO L276 IsEmpty]: Start isEmpty. Operand 15197 states and 54478 transitions. [2018-12-31 17:29:41,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-31 17:29:41,947 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:29:41,947 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:29:41,947 INFO L423 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:29:41,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:29:41,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1356359066, now seen corresponding path program 1 times [2018-12-31 17:29:41,949 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-31 17:29:41,949 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-31 17:29:41,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:29:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:29:42,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 17:29:42,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:29:42,144 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-31 17:29:42,153 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 17:29:42,153 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-31 17:29:42,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-31 17:29:42,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-31 17:29:42,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-31 17:29:42,154 INFO L87 Difference]: Start difference. First operand 15197 states and 54478 transitions. Second operand 5 states. [2018-12-31 17:29:42,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:29:42,333 INFO L93 Difference]: Finished difference Result 8213 states and 26746 transitions. [2018-12-31 17:29:42,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-31 17:29:42,335 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2018-12-31 17:29:42,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:29:42,352 INFO L225 Difference]: With dead ends: 8213 [2018-12-31 17:29:42,352 INFO L226 Difference]: Without dead ends: 8213 [2018-12-31 17:29:42,353 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-31 17:29:42,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8213 states. [2018-12-31 17:29:42,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8213 to 7637. [2018-12-31 17:29:42,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7637 states. [2018-12-31 17:29:42,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7637 states to 7637 states and 24730 transitions. [2018-12-31 17:29:42,532 INFO L78 Accepts]: Start accepts. Automaton has 7637 states and 24730 transitions. Word has length 33 [2018-12-31 17:29:42,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:29:42,533 INFO L480 AbstractCegarLoop]: Abstraction has 7637 states and 24730 transitions. [2018-12-31 17:29:42,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-31 17:29:42,533 INFO L276 IsEmpty]: Start isEmpty. Operand 7637 states and 24730 transitions. [2018-12-31 17:29:42,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-31 17:29:42,542 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:29:42,542 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:29:42,543 INFO L423 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:29:42,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:29:42,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1715420402, now seen corresponding path program 1 times [2018-12-31 17:29:42,544 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-31 17:29:42,544 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-31 17:29:42,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:29:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:29:42,623 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 17:29:42,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:29:42,854 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-31 17:29:42,856 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 17:29:42,859 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-31 17:29:42,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-31 17:29:42,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-31 17:29:42,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-31 17:29:42,861 INFO L87 Difference]: Start difference. First operand 7637 states and 24730 transitions. Second operand 5 states. [2018-12-31 17:29:43,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:29:43,084 INFO L93 Difference]: Finished difference Result 11390 states and 37095 transitions. [2018-12-31 17:29:43,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-31 17:29:43,085 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2018-12-31 17:29:43,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:29:43,108 INFO L225 Difference]: With dead ends: 11390 [2018-12-31 17:29:43,108 INFO L226 Difference]: Without dead ends: 10751 [2018-12-31 17:29:43,109 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-12-31 17:29:43,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10751 states. [2018-12-31 17:29:43,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10751 to 7322. [2018-12-31 17:29:43,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7322 states. [2018-12-31 17:29:43,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7322 states to 7322 states and 23826 transitions. [2018-12-31 17:29:43,282 INFO L78 Accepts]: Start accepts. Automaton has 7322 states and 23826 transitions. Word has length 38 [2018-12-31 17:29:43,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:29:43,283 INFO L480 AbstractCegarLoop]: Abstraction has 7322 states and 23826 transitions. [2018-12-31 17:29:43,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-31 17:29:43,283 INFO L276 IsEmpty]: Start isEmpty. Operand 7322 states and 23826 transitions. [2018-12-31 17:29:43,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-31 17:29:43,289 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:29:43,289 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:29:43,289 INFO L423 AbstractCegarLoop]: === Iteration 7 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:29:43,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:29:43,290 INFO L82 PathProgramCache]: Analyzing trace with hash 140136184, now seen corresponding path program 2 times [2018-12-31 17:29:43,290 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-31 17:29:43,290 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-31 17:29:43,328 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-12-31 17:29:43,429 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-12-31 17:29:43,429 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2018-12-31 17:29:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 17:29:43,780 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-31 17:29:43,782 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:110) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:87) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.computeIcfgProgramExecution(IcfgProgramExecutionBuilder.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.getIcfgProgramExecution(IcfgProgramExecutionBuilder.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecution(TraceCheck.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:344) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-12-31 17:29:43,792 INFO L168 Benchmark]: Toolchain (without parser) took 14725.84 ms. Allocated memory was 1.0 GB in the beginning and 1.9 GB in the end (delta: 864.6 MB). Free memory was 952.7 MB in the beginning and 542.4 MB in the end (delta: 410.3 MB). Peak memory consumption was 1.3 GB. Max. memory is 11.5 GB. [2018-12-31 17:29:43,795 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 17:29:43,796 INFO L168 Benchmark]: CACSL2BoogieTranslator took 765.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -165.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. [2018-12-31 17:29:43,797 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.92 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 17:29:43,797 INFO L168 Benchmark]: Boogie Preprocessor took 34.81 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 17:29:43,798 INFO L168 Benchmark]: RCFGBuilder took 628.64 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: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 11.5 GB. [2018-12-31 17:29:43,798 INFO L168 Benchmark]: TraceAbstraction took 13213.01 ms. Allocated memory was 1.2 GB in the beginning and 1.9 GB in the end (delta: 724.0 MB). Free memory was 1.1 GB in the beginning and 542.4 MB in the end (delta: 544.6 MB). Peak memory consumption was 1.3 GB. Max. memory is 11.5 GB. [2018-12-31 17:29:43,805 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 765.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -165.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 77.92 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.81 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 628.64 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: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 13213.01 ms. Allocated memory was 1.2 GB in the beginning and 1.9 GB in the end (delta: 724.0 MB). Free memory was 1.1 GB in the beginning and 542.4 MB in the end (delta: 544.6 MB). Peak memory consumption was 1.3 GB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...