./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 91b1670e 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 0.1.24-91b1670 [2018-11-28 19:35:09,128 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 19:35:09,130 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 19:35:09,147 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 19:35:09,147 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 19:35:09,149 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 19:35:09,152 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 19:35:09,153 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 19:35:09,155 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 19:35:09,156 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 19:35:09,157 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 19:35:09,157 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 19:35:09,159 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 19:35:09,160 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 19:35:09,163 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 19:35:09,164 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 19:35:09,164 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 19:35:09,169 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 19:35:09,174 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 19:35:09,178 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 19:35:09,179 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 19:35:09,183 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 19:35:09,186 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 19:35:09,186 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 19:35:09,186 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 19:35:09,187 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 19:35:09,188 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 19:35:09,189 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 19:35:09,189 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 19:35:09,190 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 19:35:09,191 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 19:35:09,191 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 19:35:09,191 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 19:35:09,192 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 19:35:09,193 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 19:35:09,193 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 19:35:09,194 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 19:35:09,209 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 19:35:09,209 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 19:35:09,210 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 19:35:09,210 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 19:35:09,210 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 19:35:09,211 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 19:35:09,211 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 19:35:09,211 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 19:35:09,211 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 19:35:09,211 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 19:35:09,212 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 19:35:09,212 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 19:35:09,212 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 19:35:09,212 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 19:35:09,212 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 19:35:09,212 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 19:35:09,213 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 19:35:09,213 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 19:35:09,213 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 19:35:09,213 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 19:35:09,213 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 19:35:09,213 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 19:35:09,214 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 19:35:09,214 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 19:35:09,214 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 19:35:09,214 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 19:35:09,214 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 19:35:09,215 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 19:35:09,215 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 19:35:09,215 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 19:35:09,215 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 [2018-11-28 19:35:09,261 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 19:35:09,278 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 19:35:09,283 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 19:35:09,284 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 19:35:09,285 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 19:35:09,286 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/pthread-atomic/read_write_lock_false-unreach-call.i [2018-11-28 19:35:09,358 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ada623250/69d494e071124fa6891df2da3eef68e6/FLAG7ca73690c [2018-11-28 19:35:09,866 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 19:35:09,867 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/pthread-atomic/read_write_lock_false-unreach-call.i [2018-11-28 19:35:09,882 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ada623250/69d494e071124fa6891df2da3eef68e6/FLAG7ca73690c [2018-11-28 19:35:10,159 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ada623250/69d494e071124fa6891df2da3eef68e6 [2018-11-28 19:35:10,163 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 19:35:10,164 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 19:35:10,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 19:35:10,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 19:35:10,169 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 19:35:10,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:35:10" (1/1) ... [2018-11-28 19:35:10,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4514ae40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:10, skipping insertion in model container [2018-11-28 19:35:10,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:35:10" (1/1) ... [2018-11-28 19:35:10,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 19:35:10,242 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 19:35:10,685 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 19:35:10,710 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 19:35:10,781 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 19:35:10,939 INFO L195 MainTranslator]: Completed translation [2018-11-28 19:35:10,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:10 WrapperNode [2018-11-28 19:35:10,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 19:35:10,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 19:35:10,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 19:35:10,941 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 19:35:10,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:10" (1/1) ... [2018-11-28 19:35:10,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:10" (1/1) ... [2018-11-28 19:35:10,997 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 19:35:10,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 19:35:10,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 19:35:10,998 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 19:35:11,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:10" (1/1) ... [2018-11-28 19:35:11,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:10" (1/1) ... [2018-11-28 19:35:11,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:10" (1/1) ... [2018-11-28 19:35:11,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:10" (1/1) ... [2018-11-28 19:35:11,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:10" (1/1) ... [2018-11-28 19:35:11,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:10" (1/1) ... [2018-11-28 19:35:11,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:10" (1/1) ... [2018-11-28 19:35:11,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 19:35:11,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 19:35:11,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 19:35:11,030 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 19:35:11,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:10" (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 [2018-11-28 19:35:11,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 19:35:11,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 19:35:11,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 19:35:11,113 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2018-11-28 19:35:11,114 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2018-11-28 19:35:11,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 19:35:11,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 19:35:11,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 19:35:11,114 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2018-11-28 19:35:11,118 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2018-11-28 19:35:11,119 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-11-28 19:35:11,267 INFO L1421 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_read_lock_returnLabel [2018-11-28 19:35:11,616 INFO L1421 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_write_lock_returnLabel [2018-11-28 19:35:11,630 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 19:35:11,634 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-28 19:35:11,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:35:11 BoogieIcfgContainer [2018-11-28 19:35:11,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 19:35:11,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 19:35:11,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 19:35:11,640 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 19:35:11,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:35:10" (1/3) ... [2018-11-28 19:35:11,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272270da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:35:11, skipping insertion in model container [2018-11-28 19:35:11,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:10" (2/3) ... [2018-11-28 19:35:11,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272270da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:35:11, skipping insertion in model container [2018-11-28 19:35:11,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:35:11" (3/3) ... [2018-11-28 19:35:11,644 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock_false-unreach-call.i [2018-11-28 19:35:11,686 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,686 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,686 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,687 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,687 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,688 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,688 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,689 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,689 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,689 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,689 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,690 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,690 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,690 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,690 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,690 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,690 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,693 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,693 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,693 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,693 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,694 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,694 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,695 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,695 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,695 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,696 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,696 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,696 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,696 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,697 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,697 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,697 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,697 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:11,835 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-11-28 19:35:11,835 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 19:35:11,845 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-28 19:35:11,864 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-28 19:35:11,893 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 19:35:11,893 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 19:35:11,894 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 19:35:11,894 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 19:35:11,894 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 19:35:11,894 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 19:35:11,894 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 19:35:11,894 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 19:35:11,894 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 19:35:11,907 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84places, 93 transitions [2018-11-28 19:35:14,112 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26397 states. [2018-11-28 19:35:14,114 INFO L276 IsEmpty]: Start isEmpty. Operand 26397 states. [2018-11-28 19:35:14,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 19:35:14,123 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:14,124 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 19:35:14,127 INFO L423 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:14,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:14,133 INFO L82 PathProgramCache]: Analyzing trace with hash 563310493, now seen corresponding path program 1 times [2018-11-28 19:35:14,135 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:35:14,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:35:14,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:14,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:35:14,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:14,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:14,395 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 19:35:14,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 19:35:14,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 19:35:14,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 19:35:14,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 19:35:14,416 INFO L87 Difference]: Start difference. First operand 26397 states. Second operand 4 states. [2018-11-28 19:35:15,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:15,457 INFO L93 Difference]: Finished difference Result 52906 states and 202299 transitions. [2018-11-28 19:35:15,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 19:35:15,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-28 19:35:15,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:15,775 INFO L225 Difference]: With dead ends: 52906 [2018-11-28 19:35:15,776 INFO L226 Difference]: Without dead ends: 36824 [2018-11-28 19:35:15,778 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 19:35:16,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36824 states. [2018-11-28 19:35:17,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36824 to 22832. [2018-11-28 19:35:17,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22832 states. [2018-11-28 19:35:17,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22832 states to 22832 states and 87504 transitions. [2018-11-28 19:35:17,443 INFO L78 Accepts]: Start accepts. Automaton has 22832 states and 87504 transitions. Word has length 23 [2018-11-28 19:35:17,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:17,443 INFO L480 AbstractCegarLoop]: Abstraction has 22832 states and 87504 transitions. [2018-11-28 19:35:17,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 19:35:17,444 INFO L276 IsEmpty]: Start isEmpty. Operand 22832 states and 87504 transitions. [2018-11-28 19:35:17,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 19:35:17,448 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:17,448 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 19:35:17,449 INFO L423 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:17,450 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:17,450 INFO L82 PathProgramCache]: Analyzing trace with hash 175754366, now seen corresponding path program 1 times [2018-11-28 19:35:17,450 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:35:17,450 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:35:17,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:17,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:35:17,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:17,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:17,639 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 19:35:17,639 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 19:35:17,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 19:35:17,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 19:35:17,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 19:35:17,644 INFO L87 Difference]: Start difference. First operand 22832 states and 87504 transitions. Second operand 4 states. [2018-11-28 19:35:18,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:18,204 INFO L93 Difference]: Finished difference Result 36860 states and 131462 transitions. [2018-11-28 19:35:18,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 19:35:18,205 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-11-28 19:35:18,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:18,376 INFO L225 Difference]: With dead ends: 36860 [2018-11-28 19:35:18,377 INFO L226 Difference]: Without dead ends: 36500 [2018-11-28 19:35:18,378 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 19:35:18,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36500 states. [2018-11-28 19:35:19,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36500 to 24815. [2018-11-28 19:35:19,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24815 states. [2018-11-28 19:35:19,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24815 states to 24815 states and 89636 transitions. [2018-11-28 19:35:19,674 INFO L78 Accepts]: Start accepts. Automaton has 24815 states and 89636 transitions. Word has length 25 [2018-11-28 19:35:19,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:19,675 INFO L480 AbstractCegarLoop]: Abstraction has 24815 states and 89636 transitions. [2018-11-28 19:35:19,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 19:35:19,675 INFO L276 IsEmpty]: Start isEmpty. Operand 24815 states and 89636 transitions. [2018-11-28 19:35:19,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 19:35:19,679 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:19,679 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 19:35:19,679 INFO L423 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:19,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:19,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1318827774, now seen corresponding path program 2 times [2018-11-28 19:35:19,680 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:35:19,680 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:35:19,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:19,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:35:19,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:20,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:20,004 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 19:35:20,004 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 19:35:20,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 19:35:20,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 19:35:20,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-28 19:35:20,005 INFO L87 Difference]: Start difference. First operand 24815 states and 89636 transitions. Second operand 5 states. [2018-11-28 19:35:20,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:20,238 INFO L93 Difference]: Finished difference Result 14369 states and 47935 transitions. [2018-11-28 19:35:20,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 19:35:20,239 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-11-28 19:35:20,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:20,296 INFO L225 Difference]: With dead ends: 14369 [2018-11-28 19:35:20,296 INFO L226 Difference]: Without dead ends: 13889 [2018-11-28 19:35:20,297 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-28 19:35:20,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13889 states. [2018-11-28 19:35:20,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13889 to 13889. [2018-11-28 19:35:20,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13889 states. [2018-11-28 19:35:20,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13889 states to 13889 states and 46343 transitions. [2018-11-28 19:35:20,661 INFO L78 Accepts]: Start accepts. Automaton has 13889 states and 46343 transitions. Word has length 25 [2018-11-28 19:35:20,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:20,662 INFO L480 AbstractCegarLoop]: Abstraction has 13889 states and 46343 transitions. [2018-11-28 19:35:20,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 19:35:20,662 INFO L276 IsEmpty]: Start isEmpty. Operand 13889 states and 46343 transitions. [2018-11-28 19:35:20,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-28 19:35:20,670 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:20,670 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 19:35:20,670 INFO L423 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:20,671 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:20,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1891005508, now seen corresponding path program 1 times [2018-11-28 19:35:20,671 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:35:20,671 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:35:20,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:20,684 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 19:35:20,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:20,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:20,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:20,853 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 19:35:20,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 19:35:20,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 19:35:20,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 19:35:20,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 19:35:20,854 INFO L87 Difference]: Start difference. First operand 13889 states and 46343 transitions. Second operand 4 states. [2018-11-28 19:35:21,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:21,687 INFO L93 Difference]: Finished difference Result 14756 states and 48986 transitions. [2018-11-28 19:35:21,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 19:35:21,688 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-11-28 19:35:21,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:21,712 INFO L225 Difference]: With dead ends: 14756 [2018-11-28 19:35:21,712 INFO L226 Difference]: Without dead ends: 8996 [2018-11-28 19:35:21,713 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 [2018-11-28 19:35:21,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8996 states. [2018-11-28 19:35:21,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8996 to 7637. [2018-11-28 19:35:21,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7637 states. [2018-11-28 19:35:21,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7637 states to 7637 states and 24730 transitions. [2018-11-28 19:35:21,923 INFO L78 Accepts]: Start accepts. Automaton has 7637 states and 24730 transitions. Word has length 29 [2018-11-28 19:35:21,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:21,929 INFO L480 AbstractCegarLoop]: Abstraction has 7637 states and 24730 transitions. [2018-11-28 19:35:21,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 19:35:21,930 INFO L276 IsEmpty]: Start isEmpty. Operand 7637 states and 24730 transitions. [2018-11-28 19:35:21,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-28 19:35:21,939 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:21,939 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 19:35:21,939 INFO L423 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:21,940 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:21,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1715420402, now seen corresponding path program 1 times [2018-11-28 19:35:21,940 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:35:21,940 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:35:21,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:21,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:35:21,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:22,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:22,303 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 19:35:22,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 19:35:22,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 19:35:22,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 19:35:22,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 19:35:22,304 INFO L87 Difference]: Start difference. First operand 7637 states and 24730 transitions. Second operand 6 states. [2018-11-28 19:35:22,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:22,798 INFO L93 Difference]: Finished difference Result 8537 states and 27535 transitions. [2018-11-28 19:35:22,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 19:35:22,799 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2018-11-28 19:35:22,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:22,815 INFO L225 Difference]: With dead ends: 8537 [2018-11-28 19:35:22,815 INFO L226 Difference]: Without dead ends: 7898 [2018-11-28 19:35:22,815 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 [2018-11-28 19:35:22,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7898 states. [2018-11-28 19:35:22,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7898 to 7322. [2018-11-28 19:35:22,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7322 states. [2018-11-28 19:35:22,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7322 states to 7322 states and 23826 transitions. [2018-11-28 19:35:22,972 INFO L78 Accepts]: Start accepts. Automaton has 7322 states and 23826 transitions. Word has length 38 [2018-11-28 19:35:22,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:22,973 INFO L480 AbstractCegarLoop]: Abstraction has 7322 states and 23826 transitions. [2018-11-28 19:35:22,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 19:35:22,973 INFO L276 IsEmpty]: Start isEmpty. Operand 7322 states and 23826 transitions. [2018-11-28 19:35:22,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-28 19:35:22,980 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:22,980 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 19:35:22,980 INFO L423 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:22,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:22,981 INFO L82 PathProgramCache]: Analyzing trace with hash 140136184, now seen corresponding path program 2 times [2018-11-28 19:35:22,981 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:35:22,981 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:35:22,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:22,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:35:22,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 19:35:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 19:35:23,067 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:110) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:87) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.computeIcfgProgramExecution(IcfgProgramExecutionBuilder.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.getIcfgProgramExecution(IcfgProgramExecutionBuilder.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecution(TraceCheck.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:344) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-11-28 19:35:23,077 INFO L168 Benchmark]: Toolchain (without parser) took 12913.97 ms. Allocated memory was 1.0 GB in the beginning and 1.9 GB in the end (delta: 846.2 MB). Free memory was 950.0 MB in the beginning and 1.2 GB in the end (delta: -202.0 MB). Peak memory consumption was 644.2 MB. Max. memory is 11.5 GB. [2018-11-28 19:35:23,080 INFO L168 Benchmark]: CDTParser took 0.37 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. [2018-11-28 19:35:23,081 INFO L168 Benchmark]: CACSL2BoogieTranslator took 774.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 950.0 MB in the beginning and 1.1 GB in the end (delta: -161.0 MB). Peak memory consumption was 32.1 MB. Max. memory is 11.5 GB. [2018-11-28 19:35:23,083 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.19 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2018-11-28 19:35:23,084 INFO L168 Benchmark]: Boogie Preprocessor took 31.09 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 19:35:23,086 INFO L168 Benchmark]: RCFGBuilder took 605.10 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: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. [2018-11-28 19:35:23,088 INFO L168 Benchmark]: TraceAbstraction took 11434.88 ms. Allocated memory was 1.2 GB in the beginning and 1.9 GB in the end (delta: 715.7 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -80.0 MB). Peak memory consumption was 635.6 MB. Max. memory is 11.5 GB. [2018-11-28 19:35:23,095 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 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 774.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 950.0 MB in the beginning and 1.1 GB in the end (delta: -161.0 MB). Peak memory consumption was 32.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 57.19 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.09 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 605.10 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: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 11434.88 ms. Allocated memory was 1.2 GB in the beginning and 1.9 GB in the end (delta: 715.7 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -80.0 MB). Peak memory consumption was 635.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-91b1670 [2018-11-28 19:35:25,688 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 19:35:25,689 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 19:35:25,702 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 19:35:25,702 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 19:35:25,703 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 19:35:25,705 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 19:35:25,709 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 19:35:25,711 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 19:35:25,712 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 19:35:25,715 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 19:35:25,715 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 19:35:25,717 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 19:35:25,724 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 19:35:25,725 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 19:35:25,726 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 19:35:25,730 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 19:35:25,735 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 19:35:25,740 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 19:35:25,741 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 19:35:25,743 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 19:35:25,745 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 19:35:25,750 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 19:35:25,750 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 19:35:25,750 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 19:35:25,753 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 19:35:25,754 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 19:35:25,755 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 19:35:25,759 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 19:35:25,760 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 19:35:25,760 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 19:35:25,761 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 19:35:25,761 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 19:35:25,761 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 19:35:25,762 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 19:35:25,763 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 19:35:25,763 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 19:35:25,794 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 19:35:25,794 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 19:35:25,795 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 19:35:25,795 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 19:35:25,800 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 19:35:25,800 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 19:35:25,800 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 19:35:25,802 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 19:35:25,802 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 19:35:25,802 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 19:35:25,802 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 19:35:25,802 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 19:35:25,802 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 19:35:25,803 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 19:35:25,803 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 19:35:25,803 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 19:35:25,803 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 19:35:25,803 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 19:35:25,803 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 19:35:25,805 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 19:35:25,805 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 19:35:25,805 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 19:35:25,805 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 19:35:25,806 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 19:35:25,806 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 19:35:25,806 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 19:35:25,807 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 19:35:25,807 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 19:35:25,807 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 19:35:25,807 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 19:35:25,807 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 19:35:25,807 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 19:35:25,808 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 [2018-11-28 19:35:25,867 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 19:35:25,882 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 19:35:25,885 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 19:35:25,886 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 19:35:25,886 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 19:35:25,887 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/pthread-atomic/read_write_lock_false-unreach-call.i [2018-11-28 19:35:25,938 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce1e6252b/7ad446d413644676ac3ef3d077984cdc/FLAGb5e4d2d54 [2018-11-28 19:35:26,500 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 19:35:26,500 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/pthread-atomic/read_write_lock_false-unreach-call.i [2018-11-28 19:35:26,520 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce1e6252b/7ad446d413644676ac3ef3d077984cdc/FLAGb5e4d2d54 [2018-11-28 19:35:26,721 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce1e6252b/7ad446d413644676ac3ef3d077984cdc [2018-11-28 19:35:26,725 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 19:35:26,726 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 19:35:26,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 19:35:26,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 19:35:26,731 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 19:35:26,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:35:26" (1/1) ... [2018-11-28 19:35:26,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3580b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:26, skipping insertion in model container [2018-11-28 19:35:26,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:35:26" (1/1) ... [2018-11-28 19:35:26,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 19:35:26,797 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 19:35:27,172 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 19:35:27,190 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 19:35:27,258 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 19:35:27,449 INFO L195 MainTranslator]: Completed translation [2018-11-28 19:35:27,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:27 WrapperNode [2018-11-28 19:35:27,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 19:35:27,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 19:35:27,451 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 19:35:27,451 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 19:35:27,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:27" (1/1) ... [2018-11-28 19:35:27,493 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:27" (1/1) ... [2018-11-28 19:35:27,530 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 19:35:27,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 19:35:27,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 19:35:27,530 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 19:35:27,544 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:27" (1/1) ... [2018-11-28 19:35:27,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:27" (1/1) ... [2018-11-28 19:35:27,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:27" (1/1) ... [2018-11-28 19:35:27,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:27" (1/1) ... [2018-11-28 19:35:27,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:27" (1/1) ... [2018-11-28 19:35:27,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:27" (1/1) ... [2018-11-28 19:35:27,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:27" (1/1) ... [2018-11-28 19:35:27,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 19:35:27,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 19:35:27,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 19:35:27,596 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 19:35:27,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:27" (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 [2018-11-28 19:35:27,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 19:35:27,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-28 19:35:27,670 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2018-11-28 19:35:27,670 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2018-11-28 19:35:27,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 19:35:27,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-28 19:35:27,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 19:35:27,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 19:35:27,671 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2018-11-28 19:35:27,671 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2018-11-28 19:35:27,673 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-11-28 19:35:27,905 INFO L1421 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_read_lock_returnLabel [2018-11-28 19:35:28,348 INFO L1421 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_write_lock_returnLabel [2018-11-28 19:35:28,371 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 19:35:28,371 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-28 19:35:28,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:35:28 BoogieIcfgContainer [2018-11-28 19:35:28,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 19:35:28,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 19:35:28,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 19:35:28,376 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 19:35:28,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:35:26" (1/3) ... [2018-11-28 19:35:28,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@290df4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:35:28, skipping insertion in model container [2018-11-28 19:35:28,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:27" (2/3) ... [2018-11-28 19:35:28,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@290df4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:35:28, skipping insertion in model container [2018-11-28 19:35:28,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:35:28" (3/3) ... [2018-11-28 19:35:28,381 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock_false-unreach-call.i [2018-11-28 19:35:28,418 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,419 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,419 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,419 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,419 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,420 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,420 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,420 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,420 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,421 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,421 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,421 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,421 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,422 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,422 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,422 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,422 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,422 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,423 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,423 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,423 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,423 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,424 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,424 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,424 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,424 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,425 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,425 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,425 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,425 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,425 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,425 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,426 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,426 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:28,522 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-11-28 19:35:28,523 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 19:35:28,531 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-28 19:35:28,546 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-28 19:35:28,570 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 19:35:28,571 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 19:35:28,571 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 19:35:28,571 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 19:35:28,572 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 19:35:28,572 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 19:35:28,572 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 19:35:28,572 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 19:35:28,572 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 19:35:28,584 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84places, 93 transitions [2018-11-28 19:35:30,609 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26397 states. [2018-11-28 19:35:30,611 INFO L276 IsEmpty]: Start isEmpty. Operand 26397 states. [2018-11-28 19:35:30,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 19:35:30,622 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:30,623 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 19:35:30,625 INFO L423 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:30,630 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:30,630 INFO L82 PathProgramCache]: Analyzing trace with hash 563310493, now seen corresponding path program 1 times [2018-11-28 19:35:30,636 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 19:35:30,637 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 [2018-11-28 19:35:30,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:35:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:30,723 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:35:30,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:30,829 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 19:35:30,840 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 19:35:30,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 19:35:30,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 19:35:30,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 19:35:30,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 19:35:30,888 INFO L87 Difference]: Start difference. First operand 26397 states. Second operand 4 states. [2018-11-28 19:35:32,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:32,067 INFO L93 Difference]: Finished difference Result 52906 states and 202299 transitions. [2018-11-28 19:35:32,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 19:35:32,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-28 19:35:32,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:32,454 INFO L225 Difference]: With dead ends: 52906 [2018-11-28 19:35:32,454 INFO L226 Difference]: Without dead ends: 36824 [2018-11-28 19:35:32,457 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 19:35:32,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36824 states. [2018-11-28 19:35:34,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36824 to 22832. [2018-11-28 19:35:34,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22832 states. [2018-11-28 19:35:34,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22832 states to 22832 states and 87504 transitions. [2018-11-28 19:35:34,228 INFO L78 Accepts]: Start accepts. Automaton has 22832 states and 87504 transitions. Word has length 23 [2018-11-28 19:35:34,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:34,229 INFO L480 AbstractCegarLoop]: Abstraction has 22832 states and 87504 transitions. [2018-11-28 19:35:34,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 19:35:34,229 INFO L276 IsEmpty]: Start isEmpty. Operand 22832 states and 87504 transitions. [2018-11-28 19:35:34,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 19:35:34,234 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:34,234 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 19:35:34,234 INFO L423 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:34,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:34,235 INFO L82 PathProgramCache]: Analyzing trace with hash 175754366, now seen corresponding path program 1 times [2018-11-28 19:35:34,235 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 19:35:34,236 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 [2018-11-28 19:35:34,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:35:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:34,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:35:34,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:34,446 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 19:35:34,448 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 19:35:34,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 19:35:34,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 19:35:34,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 19:35:34,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 19:35:34,452 INFO L87 Difference]: Start difference. First operand 22832 states and 87504 transitions. Second operand 4 states. [2018-11-28 19:35:35,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:35,523 INFO L93 Difference]: Finished difference Result 44834 states and 165805 transitions. [2018-11-28 19:35:35,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 19:35:35,524 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-11-28 19:35:35,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:35,752 INFO L225 Difference]: With dead ends: 44834 [2018-11-28 19:35:35,752 INFO L226 Difference]: Without dead ends: 44474 [2018-11-28 19:35:35,754 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 [2018-11-28 19:35:36,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44474 states. [2018-11-28 19:35:37,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44474 to 24815. [2018-11-28 19:35:37,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24815 states. [2018-11-28 19:35:37,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24815 states to 24815 states and 92018 transitions. [2018-11-28 19:35:37,222 INFO L78 Accepts]: Start accepts. Automaton has 24815 states and 92018 transitions. Word has length 25 [2018-11-28 19:35:37,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:37,222 INFO L480 AbstractCegarLoop]: Abstraction has 24815 states and 92018 transitions. [2018-11-28 19:35:37,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 19:35:37,223 INFO L276 IsEmpty]: Start isEmpty. Operand 24815 states and 92018 transitions. [2018-11-28 19:35:37,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 19:35:37,226 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:37,226 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 19:35:37,227 INFO L423 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:37,227 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:37,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1318827774, now seen corresponding path program 2 times [2018-11-28 19:35:37,228 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 19:35:37,228 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 [2018-11-28 19:35:37,265 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-28 19:35:37,302 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-28 19:35:37,302 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 19:35:37,305 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:35:37,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:37,364 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 19:35:37,369 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 19:35:37,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 19:35:37,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 19:35:37,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 19:35:37,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 19:35:37,370 INFO L87 Difference]: Start difference. First operand 24815 states and 92018 transitions. Second operand 3 states. [2018-11-28 19:35:37,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:37,603 INFO L93 Difference]: Finished difference Result 18827 states and 66927 transitions. [2018-11-28 19:35:37,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 19:35:37,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-11-28 19:35:37,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:37,720 INFO L225 Difference]: With dead ends: 18827 [2018-11-28 19:35:37,720 INFO L226 Difference]: Without dead ends: 18347 [2018-11-28 19:35:37,721 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 19:35:37,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18347 states. [2018-11-28 19:35:38,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18347 to 18347. [2018-11-28 19:35:38,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18347 states. [2018-11-28 19:35:38,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18347 states to 18347 states and 65335 transitions. [2018-11-28 19:35:38,736 INFO L78 Accepts]: Start accepts. Automaton has 18347 states and 65335 transitions. Word has length 25 [2018-11-28 19:35:38,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:38,737 INFO L480 AbstractCegarLoop]: Abstraction has 18347 states and 65335 transitions. [2018-11-28 19:35:38,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 19:35:38,738 INFO L276 IsEmpty]: Start isEmpty. Operand 18347 states and 65335 transitions. [2018-11-28 19:35:38,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-28 19:35:38,742 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:38,742 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 19:35:38,742 INFO L423 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:38,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:38,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1891005508, now seen corresponding path program 1 times [2018-11-28 19:35:38,744 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 19:35:38,745 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 [2018-11-28 19:35:38,776 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 19:35:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:38,821 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:35:38,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:38,950 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 19:35:38,952 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 19:35:38,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 19:35:38,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 19:35:38,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 19:35:38,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 19:35:38,953 INFO L87 Difference]: Start difference. First operand 18347 states and 65335 transitions. Second operand 4 states. [2018-11-28 19:35:39,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:39,690 INFO L93 Difference]: Finished difference Result 32444 states and 115032 transitions. [2018-11-28 19:35:39,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 19:35:39,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-11-28 19:35:39,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:39,779 INFO L225 Difference]: With dead ends: 32444 [2018-11-28 19:35:39,779 INFO L226 Difference]: Without dead ends: 25844 [2018-11-28 19:35:39,779 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 19:35:39,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25844 states. [2018-11-28 19:35:40,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25844 to 15197. [2018-11-28 19:35:40,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15197 states. [2018-11-28 19:35:40,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15197 states to 15197 states and 54478 transitions. [2018-11-28 19:35:40,331 INFO L78 Accepts]: Start accepts. Automaton has 15197 states and 54478 transitions. Word has length 29 [2018-11-28 19:35:40,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:40,332 INFO L480 AbstractCegarLoop]: Abstraction has 15197 states and 54478 transitions. [2018-11-28 19:35:40,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 19:35:40,333 INFO L276 IsEmpty]: Start isEmpty. Operand 15197 states and 54478 transitions. [2018-11-28 19:35:40,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-28 19:35:40,337 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:40,337 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 19:35:40,337 INFO L423 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:40,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:40,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1356359066, now seen corresponding path program 1 times [2018-11-28 19:35:40,339 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 19:35:40,339 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 [2018-11-28 19:35:40,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:35:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:40,429 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:35:40,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:40,610 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [MP cvc4 --incremental --print-success --lang smt --rewrite-divk (6)] Exception during sending of exit command (exit): Broken pipe [2018-11-28 19:35:40,617 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 19:35:40,617 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 19:35:40,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 19:35:40,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 19:35:40,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 19:35:40,618 INFO L87 Difference]: Start difference. First operand 15197 states and 54478 transitions. Second operand 5 states. [2018-11-28 19:35:41,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:41,063 INFO L93 Difference]: Finished difference Result 8213 states and 26746 transitions. [2018-11-28 19:35:41,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 19:35:41,064 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2018-11-28 19:35:41,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:41,087 INFO L225 Difference]: With dead ends: 8213 [2018-11-28 19:35:41,087 INFO L226 Difference]: Without dead ends: 8213 [2018-11-28 19:35:41,088 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 19:35:41,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8213 states. [2018-11-28 19:35:41,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8213 to 7637. [2018-11-28 19:35:41,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7637 states. [2018-11-28 19:35:41,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7637 states to 7637 states and 24730 transitions. [2018-11-28 19:35:41,301 INFO L78 Accepts]: Start accepts. Automaton has 7637 states and 24730 transitions. Word has length 33 [2018-11-28 19:35:41,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:41,301 INFO L480 AbstractCegarLoop]: Abstraction has 7637 states and 24730 transitions. [2018-11-28 19:35:41,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 19:35:41,302 INFO L276 IsEmpty]: Start isEmpty. Operand 7637 states and 24730 transitions. [2018-11-28 19:35:41,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-28 19:35:41,310 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:41,310 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 19:35:41,310 INFO L423 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:41,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:41,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1715420402, now seen corresponding path program 1 times [2018-11-28 19:35:41,311 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 19:35:41,311 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 [2018-11-28 19:35:41,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:35:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:41,378 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:35:41,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:41,514 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 19:35:41,518 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 19:35:41,518 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 19:35:41,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 19:35:41,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 19:35:41,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 19:35:41,519 INFO L87 Difference]: Start difference. First operand 7637 states and 24730 transitions. Second operand 5 states. [2018-11-28 19:35:41,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:41,717 INFO L93 Difference]: Finished difference Result 11390 states and 37095 transitions. [2018-11-28 19:35:41,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 19:35:41,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2018-11-28 19:35:41,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:41,742 INFO L225 Difference]: With dead ends: 11390 [2018-11-28 19:35:41,742 INFO L226 Difference]: Without dead ends: 10751 [2018-11-28 19:35:41,743 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-28 19:35:41,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10751 states. [2018-11-28 19:35:42,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10751 to 7322. [2018-11-28 19:35:42,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7322 states. [2018-11-28 19:35:42,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7322 states to 7322 states and 23826 transitions. [2018-11-28 19:35:42,448 INFO L78 Accepts]: Start accepts. Automaton has 7322 states and 23826 transitions. Word has length 38 [2018-11-28 19:35:42,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:42,450 INFO L480 AbstractCegarLoop]: Abstraction has 7322 states and 23826 transitions. [2018-11-28 19:35:42,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 19:35:42,450 INFO L276 IsEmpty]: Start isEmpty. Operand 7322 states and 23826 transitions. [2018-11-28 19:35:42,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-28 19:35:42,460 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:42,461 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 19:35:42,461 INFO L423 AbstractCegarLoop]: === Iteration 7 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:42,461 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:42,461 INFO L82 PathProgramCache]: Analyzing trace with hash 140136184, now seen corresponding path program 2 times [2018-11-28 19:35:42,462 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 19:35:42,462 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 [2018-11-28 19:35:42,501 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-28 19:35:42,626 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-28 19:35:42,626 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2018-11-28 19:35:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 19:35:43,018 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 19:35:43,019 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:110) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:87) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.computeIcfgProgramExecution(IcfgProgramExecutionBuilder.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.getIcfgProgramExecution(IcfgProgramExecutionBuilder.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecution(TraceCheck.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:344) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-11-28 19:35:43,030 INFO L168 Benchmark]: Toolchain (without parser) took 16305.00 ms. Allocated memory was 1.0 GB in the beginning and 1.9 GB in the end (delta: 862.5 MB). Free memory was 951.4 MB in the beginning and 1.4 GB in the end (delta: -478.1 MB). Peak memory consumption was 384.3 MB. Max. memory is 11.5 GB. [2018-11-28 19:35:43,033 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. [2018-11-28 19:35:43,033 INFO L168 Benchmark]: CACSL2BoogieTranslator took 722.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -171.2 MB). Peak memory consumption was 37.8 MB. Max. memory is 11.5 GB. [2018-11-28 19:35:43,035 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.39 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: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. [2018-11-28 19:35:43,035 INFO L168 Benchmark]: Boogie Preprocessor took 65.46 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 19:35:43,036 INFO L168 Benchmark]: RCFGBuilder took 775.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 11.5 GB. [2018-11-28 19:35:43,038 INFO L168 Benchmark]: TraceAbstraction took 14649.76 ms. Allocated memory was 1.2 GB in the beginning and 1.9 GB in the end (delta: 724.6 MB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -346.2 MB). Peak memory consumption was 378.3 MB. Max. memory is 11.5 GB. [2018-11-28 19:35:43,043 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 722.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -171.2 MB). Peak memory consumption was 37.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 79.39 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: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 65.46 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 775.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 14649.76 ms. Allocated memory was 1.2 GB in the beginning and 1.9 GB in the end (delta: 724.6 MB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -346.2 MB). Peak memory consumption was 378.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...