./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock_false-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 96530338 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 ../../../trunk/examples/svcomp/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 ../../../trunk/examples/svcomp/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 0.1.23-9653033 [2018-11-26 12:58:33,410 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-26 12:58:33,413 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-26 12:58:33,425 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-26 12:58:33,426 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-26 12:58:33,427 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-26 12:58:33,428 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-26 12:58:33,430 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-26 12:58:33,432 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-26 12:58:33,433 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-26 12:58:33,434 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-26 12:58:33,434 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-26 12:58:33,435 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-26 12:58:33,436 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-26 12:58:33,437 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-26 12:58:33,438 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-26 12:58:33,439 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-26 12:58:33,441 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-26 12:58:33,443 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-26 12:58:33,444 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-26 12:58:33,446 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-26 12:58:33,447 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-26 12:58:33,449 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-26 12:58:33,450 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-26 12:58:33,450 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-26 12:58:33,451 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-26 12:58:33,452 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-26 12:58:33,453 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-26 12:58:33,454 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-26 12:58:33,455 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-26 12:58:33,455 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-26 12:58:33,455 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-26 12:58:33,456 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-26 12:58:33,456 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-26 12:58:33,457 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-26 12:58:33,457 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-26 12:58:33,458 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-26 12:58:33,473 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-26 12:58:33,474 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-26 12:58:33,474 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-26 12:58:33,475 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-26 12:58:33,475 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-26 12:58:33,475 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-26 12:58:33,476 INFO L133 SettingsManager]: * Use SBE=true [2018-11-26 12:58:33,476 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-26 12:58:33,476 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-26 12:58:33,476 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-26 12:58:33,476 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-26 12:58:33,477 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-26 12:58:33,477 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-26 12:58:33,477 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-26 12:58:33,477 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-26 12:58:33,477 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-26 12:58:33,477 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-26 12:58:33,478 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-26 12:58:33,478 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-26 12:58:33,478 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-26 12:58:33,478 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-26 12:58:33,478 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-26 12:58:33,478 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-26 12:58:33,479 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-26 12:58:33,479 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-26 12:58:33,479 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-26 12:58:33,479 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-26 12:58:33,479 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-26 12:58:33,480 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-26 12:58:33,480 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-26 12:58:33,480 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 [2018-11-26 12:58:33,525 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-26 12:58:33,538 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-26 12:58:33,542 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-26 12:58:33,543 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-26 12:58:33,544 INFO L276 PluginConnector]: CDTParser initialized [2018-11-26 12:58:33,544 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock_false-unreach-call.i [2018-11-26 12:58:33,607 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4164eb7dc/a6cca67cf18249f39fc9269babe5a948/FLAG2ff2116af [2018-11-26 12:58:34,050 INFO L307 CDTParser]: Found 1 translation units. [2018-11-26 12:58:34,050 INFO L161 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock_false-unreach-call.i [2018-11-26 12:58:34,064 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4164eb7dc/a6cca67cf18249f39fc9269babe5a948/FLAG2ff2116af [2018-11-26 12:58:34,573 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4164eb7dc/a6cca67cf18249f39fc9269babe5a948 [2018-11-26 12:58:34,576 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-26 12:58:34,578 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-26 12:58:34,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-26 12:58:34,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-26 12:58:34,581 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-26 12:58:34,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:58:34" (1/1) ... [2018-11-26 12:58:34,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@301b560c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:34, skipping insertion in model container [2018-11-26 12:58:34,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:58:34" (1/1) ... [2018-11-26 12:58:34,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-26 12:58:34,640 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-26 12:58:34,943 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-26 12:58:34,954 INFO L191 MainTranslator]: Completed pre-run [2018-11-26 12:58:35,048 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-26 12:58:35,101 INFO L195 MainTranslator]: Completed translation [2018-11-26 12:58:35,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:35 WrapperNode [2018-11-26 12:58:35,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-26 12:58:35,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-26 12:58:35,103 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-26 12:58:35,103 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-26 12:58:35,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:35" (1/1) ... [2018-11-26 12:58:35,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:35" (1/1) ... [2018-11-26 12:58:35,149 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-26 12:58:35,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-26 12:58:35,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-26 12:58:35,150 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-26 12:58:35,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:35" (1/1) ... [2018-11-26 12:58:35,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:35" (1/1) ... [2018-11-26 12:58:35,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:35" (1/1) ... [2018-11-26 12:58:35,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:35" (1/1) ... [2018-11-26 12:58:35,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:35" (1/1) ... [2018-11-26 12:58:35,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:35" (1/1) ... [2018-11-26 12:58:35,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:35" (1/1) ... [2018-11-26 12:58:35,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-26 12:58:35,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-26 12:58:35,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-26 12:58:35,171 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-26 12:58:35,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:35" (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 [2018-11-26 12:58:35,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-26 12:58:35,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-26 12:58:35,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-26 12:58:35,221 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2018-11-26 12:58:35,221 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2018-11-26 12:58:35,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-26 12:58:35,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-26 12:58:35,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-26 12:58:35,222 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2018-11-26 12:58:35,222 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2018-11-26 12:58:35,223 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-11-26 12:58:35,329 INFO L1416 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_read_lock_returnLabel [2018-11-26 12:58:35,477 INFO L1416 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_write_lock_returnLabel [2018-11-26 12:58:35,487 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-26 12:58:35,487 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-26 12:58:35,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:58:35 BoogieIcfgContainer [2018-11-26 12:58:35,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-26 12:58:35,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-26 12:58:35,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-26 12:58:35,491 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-26 12:58:35,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:58:34" (1/3) ... [2018-11-26 12:58:35,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765348a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:58:35, skipping insertion in model container [2018-11-26 12:58:35,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:35" (2/3) ... [2018-11-26 12:58:35,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765348a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:58:35, skipping insertion in model container [2018-11-26 12:58:35,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:58:35" (3/3) ... [2018-11-26 12:58:35,494 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock_false-unreach-call.i [2018-11-26 12:58:35,526 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,526 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,527 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,527 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,527 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,527 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,527 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,528 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,528 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,528 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,528 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,529 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,529 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,529 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,529 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,529 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,530 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,530 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,530 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,531 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,531 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,531 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,531 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,531 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,532 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,532 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,532 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,532 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,533 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,533 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,533 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,533 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,533 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,534 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:35,576 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-11-26 12:58:35,576 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-26 12:58:35,585 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-26 12:58:35,601 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-26 12:58:35,622 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-26 12:58:35,622 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-26 12:58:35,622 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-26 12:58:35,622 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-26 12:58:35,623 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-26 12:58:35,623 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-26 12:58:35,623 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-26 12:58:35,623 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-26 12:58:35,623 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-26 12:58:35,634 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84places, 93 transitions [2018-11-26 12:58:37,135 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26397 states. [2018-11-26 12:58:37,137 INFO L276 IsEmpty]: Start isEmpty. Operand 26397 states. [2018-11-26 12:58:37,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-26 12:58:37,145 INFO L394 BasicCegarLoop]: Found error trace [2018-11-26 12:58:37,146 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] [2018-11-26 12:58:37,148 INFO L423 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-26 12:58:37,154 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-26 12:58:37,155 INFO L82 PathProgramCache]: Analyzing trace with hash 563310493, now seen corresponding path program 1 times [2018-11-26 12:58:37,157 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-26 12:58:37,157 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-26 12:58:37,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-26 12:58:37,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-26 12:58:37,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-26 12:58:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-26 12:58:37,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-26 12:58:37,356 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-26 12:58:37,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-26 12:58:37,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-26 12:58:37,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-26 12:58:37,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-26 12:58:37,376 INFO L87 Difference]: Start difference. First operand 26397 states. Second operand 4 states. [2018-11-26 12:58:37,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-26 12:58:37,977 INFO L93 Difference]: Finished difference Result 52906 states and 202299 transitions. [2018-11-26 12:58:37,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-26 12:58:37,979 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-26 12:58:37,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-26 12:58:38,216 INFO L225 Difference]: With dead ends: 52906 [2018-11-26 12:58:38,216 INFO L226 Difference]: Without dead ends: 36824 [2018-11-26 12:58:38,218 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 [2018-11-26 12:58:38,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36824 states. [2018-11-26 12:58:39,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36824 to 22832. [2018-11-26 12:58:39,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22832 states. [2018-11-26 12:58:39,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22832 states to 22832 states and 87504 transitions. [2018-11-26 12:58:39,350 INFO L78 Accepts]: Start accepts. Automaton has 22832 states and 87504 transitions. Word has length 23 [2018-11-26 12:58:39,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-26 12:58:39,351 INFO L480 AbstractCegarLoop]: Abstraction has 22832 states and 87504 transitions. [2018-11-26 12:58:39,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-26 12:58:39,351 INFO L276 IsEmpty]: Start isEmpty. Operand 22832 states and 87504 transitions. [2018-11-26 12:58:39,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-26 12:58:39,354 INFO L394 BasicCegarLoop]: Found error trace [2018-11-26 12:58:39,355 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] [2018-11-26 12:58:39,355 INFO L423 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-26 12:58:39,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-26 12:58:39,356 INFO L82 PathProgramCache]: Analyzing trace with hash 175754366, now seen corresponding path program 1 times [2018-11-26 12:58:39,356 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-26 12:58:39,356 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-26 12:58:39,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-26 12:58:39,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-26 12:58:39,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-26 12:58:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-26 12:58:39,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-26 12:58:39,432 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-26 12:58:39,432 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-26 12:58:39,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-26 12:58:39,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-26 12:58:39,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-26 12:58:39,435 INFO L87 Difference]: Start difference. First operand 22832 states and 87504 transitions. Second operand 4 states. [2018-11-26 12:58:39,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-26 12:58:39,850 INFO L93 Difference]: Finished difference Result 36860 states and 131462 transitions. [2018-11-26 12:58:39,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-26 12:58:39,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-11-26 12:58:39,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-26 12:58:39,969 INFO L225 Difference]: With dead ends: 36860 [2018-11-26 12:58:39,969 INFO L226 Difference]: Without dead ends: 36500 [2018-11-26 12:58:39,970 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-26 12:58:40,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36500 states. [2018-11-26 12:58:40,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36500 to 24815. [2018-11-26 12:58:40,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24815 states. [2018-11-26 12:58:40,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24815 states to 24815 states and 89636 transitions. [2018-11-26 12:58:40,822 INFO L78 Accepts]: Start accepts. Automaton has 24815 states and 89636 transitions. Word has length 25 [2018-11-26 12:58:40,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-26 12:58:40,823 INFO L480 AbstractCegarLoop]: Abstraction has 24815 states and 89636 transitions. [2018-11-26 12:58:40,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-26 12:58:40,823 INFO L276 IsEmpty]: Start isEmpty. Operand 24815 states and 89636 transitions. [2018-11-26 12:58:40,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-26 12:58:40,826 INFO L394 BasicCegarLoop]: Found error trace [2018-11-26 12:58:40,826 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] [2018-11-26 12:58:40,826 INFO L423 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-26 12:58:40,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-26 12:58:40,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1318827774, now seen corresponding path program 2 times [2018-11-26 12:58:40,826 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-26 12:58:40,826 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-26 12:58:40,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-26 12:58:40,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-26 12:58:40,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-26 12:58:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-26 12:58:40,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-26 12:58:40,895 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-26 12:58:40,896 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-26 12:58:40,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-26 12:58:40,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-26 12:58:40,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-26 12:58:40,897 INFO L87 Difference]: Start difference. First operand 24815 states and 89636 transitions. Second operand 5 states. [2018-11-26 12:58:41,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-26 12:58:41,010 INFO L93 Difference]: Finished difference Result 14369 states and 47935 transitions. [2018-11-26 12:58:41,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-26 12:58:41,011 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-11-26 12:58:41,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-26 12:58:41,044 INFO L225 Difference]: With dead ends: 14369 [2018-11-26 12:58:41,044 INFO L226 Difference]: Without dead ends: 13889 [2018-11-26 12:58:41,044 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-26 12:58:41,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13889 states. [2018-11-26 12:58:41,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13889 to 13889. [2018-11-26 12:58:41,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13889 states. [2018-11-26 12:58:41,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13889 states to 13889 states and 46343 transitions. [2018-11-26 12:58:41,296 INFO L78 Accepts]: Start accepts. Automaton has 13889 states and 46343 transitions. Word has length 25 [2018-11-26 12:58:41,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-26 12:58:41,297 INFO L480 AbstractCegarLoop]: Abstraction has 13889 states and 46343 transitions. [2018-11-26 12:58:41,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-26 12:58:41,297 INFO L276 IsEmpty]: Start isEmpty. Operand 13889 states and 46343 transitions. [2018-11-26 12:58:41,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-26 12:58:41,299 INFO L394 BasicCegarLoop]: Found error trace [2018-11-26 12:58:41,300 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] [2018-11-26 12:58:41,300 INFO L423 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-26 12:58:41,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-26 12:58:41,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1891005508, now seen corresponding path program 1 times [2018-11-26 12:58:41,300 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-26 12:58:41,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-26 12:58:41,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-26 12:58:41,304 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-26 12:58:41,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-26 12:58:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-26 12:58:41,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-26 12:58:41,351 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-26 12:58:41,351 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-26 12:58:41,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-26 12:58:41,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-26 12:58:41,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-26 12:58:41,352 INFO L87 Difference]: Start difference. First operand 13889 states and 46343 transitions. Second operand 4 states. [2018-11-26 12:58:41,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-26 12:58:41,476 INFO L93 Difference]: Finished difference Result 14756 states and 48986 transitions. [2018-11-26 12:58:41,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-26 12:58:41,476 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-11-26 12:58:41,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-26 12:58:41,498 INFO L225 Difference]: With dead ends: 14756 [2018-11-26 12:58:41,498 INFO L226 Difference]: Without dead ends: 8996 [2018-11-26 12:58:41,499 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 [2018-11-26 12:58:41,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8996 states. [2018-11-26 12:58:41,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8996 to 7637. [2018-11-26 12:58:41,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7637 states. [2018-11-26 12:58:41,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7637 states to 7637 states and 24730 transitions. [2018-11-26 12:58:41,798 INFO L78 Accepts]: Start accepts. Automaton has 7637 states and 24730 transitions. Word has length 29 [2018-11-26 12:58:41,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-26 12:58:41,800 INFO L480 AbstractCegarLoop]: Abstraction has 7637 states and 24730 transitions. [2018-11-26 12:58:41,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-26 12:58:41,800 INFO L276 IsEmpty]: Start isEmpty. Operand 7637 states and 24730 transitions. [2018-11-26 12:58:41,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-26 12:58:41,806 INFO L394 BasicCegarLoop]: Found error trace [2018-11-26 12:58:41,806 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] [2018-11-26 12:58:41,806 INFO L423 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-26 12:58:41,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-26 12:58:41,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1715420402, now seen corresponding path program 1 times [2018-11-26 12:58:41,807 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-26 12:58:41,807 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-26 12:58:41,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-26 12:58:41,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-26 12:58:41,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-26 12:58:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-26 12:58:41,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-26 12:58:41,888 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-26 12:58:41,888 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-26 12:58:41,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-26 12:58:41,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-26 12:58:41,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-26 12:58:41,889 INFO L87 Difference]: Start difference. First operand 7637 states and 24730 transitions. Second operand 6 states. [2018-11-26 12:58:42,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-26 12:58:42,012 INFO L93 Difference]: Finished difference Result 8537 states and 27535 transitions. [2018-11-26 12:58:42,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-26 12:58:42,012 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2018-11-26 12:58:42,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-26 12:58:42,028 INFO L225 Difference]: With dead ends: 8537 [2018-11-26 12:58:42,028 INFO L226 Difference]: Without dead ends: 7898 [2018-11-26 12:58:42,029 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-26 12:58:42,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7898 states. [2018-11-26 12:58:42,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7898 to 7322. [2018-11-26 12:58:42,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7322 states. [2018-11-26 12:58:42,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7322 states to 7322 states and 23826 transitions. [2018-11-26 12:58:42,148 INFO L78 Accepts]: Start accepts. Automaton has 7322 states and 23826 transitions. Word has length 38 [2018-11-26 12:58:42,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-26 12:58:42,149 INFO L480 AbstractCegarLoop]: Abstraction has 7322 states and 23826 transitions. [2018-11-26 12:58:42,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-26 12:58:42,149 INFO L276 IsEmpty]: Start isEmpty. Operand 7322 states and 23826 transitions. [2018-11-26 12:58:42,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-26 12:58:42,156 INFO L394 BasicCegarLoop]: Found error trace [2018-11-26 12:58:42,156 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] [2018-11-26 12:58:42,157 INFO L423 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-26 12:58:42,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-26 12:58:42,157 INFO L82 PathProgramCache]: Analyzing trace with hash 140136184, now seen corresponding path program 2 times [2018-11-26 12:58:42,157 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-26 12:58:42,157 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-26 12:58:42,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-26 12:58:42,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-26 12:58:42,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-26 12:58:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-26 12:58:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-26 12:58:42,212 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) [2018-11-26 12:58:42,216 INFO L168 Benchmark]: Toolchain (without parser) took 7638.85 ms. Allocated memory was 1.0 GB in the beginning and 1.9 GB in the end (delta: 834.1 MB). Free memory was 949.7 MB in the beginning and 1.2 GB in the end (delta: -278.8 MB). Peak memory consumption was 555.3 MB. Max. memory is 11.5 GB. [2018-11-26 12:58:42,218 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-26 12:58:42,219 INFO L168 Benchmark]: CACSL2BoogieTranslator took 523.82 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.6 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -117.4 MB). Peak memory consumption was 31.8 MB. Max. memory is 11.5 GB. [2018-11-26 12:58:42,220 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.62 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-26 12:58:42,220 INFO L168 Benchmark]: Boogie Preprocessor took 21.33 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-26 12:58:42,221 INFO L168 Benchmark]: RCFGBuilder took 316.35 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. [2018-11-26 12:58:42,221 INFO L168 Benchmark]: TraceAbstraction took 6727.04 ms. Allocated memory was 1.1 GB in the beginning and 1.9 GB in the end (delta: 745.5 MB). Free memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: -192.4 MB). Peak memory consumption was 553.1 MB. Max. memory is 11.5 GB. [2018-11-26 12:58:42,227 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 523.82 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.6 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -117.4 MB). Peak memory consumption was 31.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 46.62 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.33 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 316.35 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6727.04 ms. Allocated memory was 1.1 GB in the beginning and 1.9 GB in the end (delta: 745.5 MB). Free memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: -192.4 MB). Peak memory consumption was 553.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-9653033 [2018-11-26 12:58:44,087 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-26 12:58:44,089 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-26 12:58:44,101 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-26 12:58:44,102 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-26 12:58:44,103 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-26 12:58:44,104 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-26 12:58:44,106 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-26 12:58:44,107 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-26 12:58:44,108 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-26 12:58:44,109 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-26 12:58:44,109 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-26 12:58:44,110 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-26 12:58:44,111 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-26 12:58:44,112 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-26 12:58:44,113 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-26 12:58:44,114 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-26 12:58:44,116 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-26 12:58:44,117 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-26 12:58:44,119 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-26 12:58:44,120 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-26 12:58:44,121 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-26 12:58:44,123 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-26 12:58:44,124 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-26 12:58:44,124 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-26 12:58:44,125 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-26 12:58:44,126 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-26 12:58:44,127 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-26 12:58:44,128 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-26 12:58:44,128 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-26 12:58:44,129 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-26 12:58:44,129 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-26 12:58:44,130 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-26 12:58:44,130 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-26 12:58:44,131 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-26 12:58:44,131 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-26 12:58:44,132 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-26 12:58:44,145 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-26 12:58:44,145 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-26 12:58:44,146 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-26 12:58:44,146 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-26 12:58:44,147 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-26 12:58:44,147 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-26 12:58:44,147 INFO L133 SettingsManager]: * Use SBE=true [2018-11-26 12:58:44,148 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-26 12:58:44,148 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-26 12:58:44,148 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-26 12:58:44,148 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-26 12:58:44,148 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-26 12:58:44,149 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-26 12:58:44,149 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-26 12:58:44,149 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-26 12:58:44,149 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-26 12:58:44,149 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-26 12:58:44,150 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-26 12:58:44,150 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-26 12:58:44,150 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-26 12:58:44,150 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-26 12:58:44,150 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-26 12:58:44,150 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-26 12:58:44,151 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-26 12:58:44,151 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-26 12:58:44,151 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-26 12:58:44,151 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-26 12:58:44,151 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-26 12:58:44,152 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-26 12:58:44,152 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-26 12:58:44,152 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-26 12:58:44,152 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-26 12:58:44,152 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 [2018-11-26 12:58:44,199 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-26 12:58:44,212 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-26 12:58:44,216 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-26 12:58:44,217 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-26 12:58:44,218 INFO L276 PluginConnector]: CDTParser initialized [2018-11-26 12:58:44,218 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock_false-unreach-call.i [2018-11-26 12:58:44,280 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e1f84305/9a0bc5f73fce4a7aa518fdf8aa982aa7/FLAG254dc3f04 [2018-11-26 12:58:44,712 INFO L307 CDTParser]: Found 1 translation units. [2018-11-26 12:58:44,713 INFO L161 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock_false-unreach-call.i [2018-11-26 12:58:44,724 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e1f84305/9a0bc5f73fce4a7aa518fdf8aa982aa7/FLAG254dc3f04 [2018-11-26 12:58:44,736 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e1f84305/9a0bc5f73fce4a7aa518fdf8aa982aa7 [2018-11-26 12:58:44,739 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-26 12:58:44,740 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-26 12:58:44,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-26 12:58:44,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-26 12:58:44,744 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-26 12:58:44,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:58:44" (1/1) ... [2018-11-26 12:58:44,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30c9d04c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:44, skipping insertion in model container [2018-11-26 12:58:44,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:58:44" (1/1) ... [2018-11-26 12:58:44,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-26 12:58:44,801 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-26 12:58:45,112 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-26 12:58:45,126 INFO L191 MainTranslator]: Completed pre-run [2018-11-26 12:58:45,220 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-26 12:58:45,291 INFO L195 MainTranslator]: Completed translation [2018-11-26 12:58:45,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:45 WrapperNode [2018-11-26 12:58:45,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-26 12:58:45,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-26 12:58:45,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-26 12:58:45,293 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-26 12:58:45,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:45" (1/1) ... [2018-11-26 12:58:45,318 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:45" (1/1) ... [2018-11-26 12:58:45,338 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-26 12:58:45,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-26 12:58:45,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-26 12:58:45,339 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-26 12:58:45,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:45" (1/1) ... [2018-11-26 12:58:45,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:45" (1/1) ... [2018-11-26 12:58:45,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:45" (1/1) ... [2018-11-26 12:58:45,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:45" (1/1) ... [2018-11-26 12:58:45,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:45" (1/1) ... [2018-11-26 12:58:45,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:45" (1/1) ... [2018-11-26 12:58:45,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:45" (1/1) ... [2018-11-26 12:58:45,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-26 12:58:45,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-26 12:58:45,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-26 12:58:45,365 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-26 12:58:45,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:45" (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 [2018-11-26 12:58:45,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-26 12:58:45,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-26 12:58:45,420 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2018-11-26 12:58:45,420 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2018-11-26 12:58:45,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-26 12:58:45,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-26 12:58:45,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-26 12:58:45,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-26 12:58:45,420 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2018-11-26 12:58:45,421 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2018-11-26 12:58:45,422 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-11-26 12:58:45,530 INFO L1416 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_read_lock_returnLabel [2018-11-26 12:58:45,696 INFO L1416 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_write_lock_returnLabel [2018-11-26 12:58:45,707 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-26 12:58:45,707 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-26 12:58:45,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:58:45 BoogieIcfgContainer [2018-11-26 12:58:45,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-26 12:58:45,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-26 12:58:45,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-26 12:58:45,712 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-26 12:58:45,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:58:44" (1/3) ... [2018-11-26 12:58:45,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6343b6c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:58:45, skipping insertion in model container [2018-11-26 12:58:45,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:45" (2/3) ... [2018-11-26 12:58:45,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6343b6c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:58:45, skipping insertion in model container [2018-11-26 12:58:45,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:58:45" (3/3) ... [2018-11-26 12:58:45,715 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock_false-unreach-call.i [2018-11-26 12:58:45,751 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,752 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,752 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,752 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,752 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,752 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,753 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,753 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,753 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,753 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,754 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,754 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,754 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,754 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,755 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,755 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,755 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,755 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,756 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,756 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,756 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,757 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,757 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,757 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,757 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,758 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,758 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,758 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,759 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,759 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,759 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,759 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,759 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,760 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-26 12:58:45,806 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-11-26 12:58:45,806 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-26 12:58:45,814 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-26 12:58:45,828 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-26 12:58:45,849 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-26 12:58:45,850 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-26 12:58:45,850 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-26 12:58:45,850 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-26 12:58:45,850 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-26 12:58:45,850 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-26 12:58:45,850 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-26 12:58:45,851 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-26 12:58:45,851 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-26 12:58:45,860 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84places, 93 transitions [2018-11-26 12:58:47,404 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26397 states. [2018-11-26 12:58:47,406 INFO L276 IsEmpty]: Start isEmpty. Operand 26397 states. [2018-11-26 12:58:47,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-26 12:58:47,415 INFO L394 BasicCegarLoop]: Found error trace [2018-11-26 12:58:47,416 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] [2018-11-26 12:58:47,418 INFO L423 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-26 12:58:47,422 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-26 12:58:47,423 INFO L82 PathProgramCache]: Analyzing trace with hash 563310493, now seen corresponding path program 1 times [2018-11-26 12:58:47,428 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-26 12:58:47,429 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 [2018-11-26 12:58:47,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-26 12:58:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-26 12:58:47,508 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-26 12:58:47,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-26 12:58:47,558 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-26 12:58:47,568 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-26 12:58:47,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-26 12:58:47,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-26 12:58:47,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-26 12:58:47,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-26 12:58:47,593 INFO L87 Difference]: Start difference. First operand 26397 states. Second operand 4 states. [2018-11-26 12:58:48,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-26 12:58:48,197 INFO L93 Difference]: Finished difference Result 52906 states and 202299 transitions. [2018-11-26 12:58:48,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-26 12:58:48,199 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-26 12:58:48,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-26 12:58:48,430 INFO L225 Difference]: With dead ends: 52906 [2018-11-26 12:58:48,430 INFO L226 Difference]: Without dead ends: 36824 [2018-11-26 12:58:48,432 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 [2018-11-26 12:58:48,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36824 states. [2018-11-26 12:58:49,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36824 to 22832. [2018-11-26 12:58:49,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22832 states. [2018-11-26 12:58:49,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22832 states to 22832 states and 87504 transitions. [2018-11-26 12:58:49,523 INFO L78 Accepts]: Start accepts. Automaton has 22832 states and 87504 transitions. Word has length 23 [2018-11-26 12:58:49,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-26 12:58:49,524 INFO L480 AbstractCegarLoop]: Abstraction has 22832 states and 87504 transitions. [2018-11-26 12:58:49,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-26 12:58:49,524 INFO L276 IsEmpty]: Start isEmpty. Operand 22832 states and 87504 transitions. [2018-11-26 12:58:49,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-26 12:58:49,527 INFO L394 BasicCegarLoop]: Found error trace [2018-11-26 12:58:49,528 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-26 12:58:49,528 INFO L423 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-26 12:58:49,528 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-26 12:58:49,528 INFO L82 PathProgramCache]: Analyzing trace with hash 175754366, now seen corresponding path program 1 times [2018-11-26 12:58:49,529 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-26 12:58:49,529 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 [2018-11-26 12:58:49,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-26 12:58:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-26 12:58:49,585 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-26 12:58:49,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-26 12:58:49,608 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-26 12:58:49,612 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-26 12:58:49,612 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-26 12:58:49,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-26 12:58:49,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-26 12:58:49,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-26 12:58:49,615 INFO L87 Difference]: Start difference. First operand 22832 states and 87504 transitions. Second operand 4 states. [2018-11-26 12:58:50,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-26 12:58:50,097 INFO L93 Difference]: Finished difference Result 44834 states and 165805 transitions. [2018-11-26 12:58:50,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-26 12:58:50,098 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-11-26 12:58:50,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-26 12:58:50,284 INFO L225 Difference]: With dead ends: 44834 [2018-11-26 12:58:50,284 INFO L226 Difference]: Without dead ends: 44474 [2018-11-26 12:58:50,285 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-26 12:58:50,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44474 states. [2018-11-26 12:58:51,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44474 to 24815. [2018-11-26 12:58:51,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24815 states. [2018-11-26 12:58:51,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24815 states to 24815 states and 92018 transitions. [2018-11-26 12:58:51,172 INFO L78 Accepts]: Start accepts. Automaton has 24815 states and 92018 transitions. Word has length 25 [2018-11-26 12:58:51,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-26 12:58:51,172 INFO L480 AbstractCegarLoop]: Abstraction has 24815 states and 92018 transitions. [2018-11-26 12:58:51,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-26 12:58:51,173 INFO L276 IsEmpty]: Start isEmpty. Operand 24815 states and 92018 transitions. [2018-11-26 12:58:51,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-26 12:58:51,175 INFO L394 BasicCegarLoop]: Found error trace [2018-11-26 12:58:51,175 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] [2018-11-26 12:58:51,175 INFO L423 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-26 12:58:51,175 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-26 12:58:51,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1318827774, now seen corresponding path program 2 times [2018-11-26 12:58:51,176 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-26 12:58:51,176 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 [2018-11-26 12:58:51,196 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-26 12:58:51,224 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-26 12:58:51,225 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-26 12:58:51,226 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-26 12:58:51,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-26 12:58:51,237 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-26 12:58:51,240 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-26 12:58:51,240 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-26 12:58:51,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-26 12:58:51,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-26 12:58:51,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-26 12:58:51,241 INFO L87 Difference]: Start difference. First operand 24815 states and 92018 transitions. Second operand 3 states. [2018-11-26 12:58:51,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-26 12:58:51,341 INFO L93 Difference]: Finished difference Result 18827 states and 66927 transitions. [2018-11-26 12:58:51,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-26 12:58:51,341 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-11-26 12:58:51,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-26 12:58:51,377 INFO L225 Difference]: With dead ends: 18827 [2018-11-26 12:58:51,378 INFO L226 Difference]: Without dead ends: 18347 [2018-11-26 12:58:51,378 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 [2018-11-26 12:58:51,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18347 states. [2018-11-26 12:58:51,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18347 to 18347. [2018-11-26 12:58:51,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18347 states. [2018-11-26 12:58:51,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18347 states to 18347 states and 65335 transitions. [2018-11-26 12:58:51,967 INFO L78 Accepts]: Start accepts. Automaton has 18347 states and 65335 transitions. Word has length 25 [2018-11-26 12:58:51,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-26 12:58:51,967 INFO L480 AbstractCegarLoop]: Abstraction has 18347 states and 65335 transitions. [2018-11-26 12:58:51,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-26 12:58:51,967 INFO L276 IsEmpty]: Start isEmpty. Operand 18347 states and 65335 transitions. [2018-11-26 12:58:51,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-26 12:58:51,969 INFO L394 BasicCegarLoop]: Found error trace [2018-11-26 12:58:51,970 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] [2018-11-26 12:58:51,970 INFO L423 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-26 12:58:51,970 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-26 12:58:51,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1891005508, now seen corresponding path program 1 times [2018-11-26 12:58:51,971 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-26 12:58:51,971 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 [2018-11-26 12:58:51,994 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-26 12:58:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-26 12:58:52,027 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-26 12:58:52,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-26 12:58:52,045 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-26 12:58:52,047 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-26 12:58:52,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-26 12:58:52,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-26 12:58:52,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-26 12:58:52,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-26 12:58:52,048 INFO L87 Difference]: Start difference. First operand 18347 states and 65335 transitions. Second operand 4 states. [2018-11-26 12:58:52,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-26 12:58:52,316 INFO L93 Difference]: Finished difference Result 32444 states and 115032 transitions. [2018-11-26 12:58:52,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-26 12:58:52,318 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-11-26 12:58:52,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-26 12:58:52,376 INFO L225 Difference]: With dead ends: 32444 [2018-11-26 12:58:52,376 INFO L226 Difference]: Without dead ends: 25844 [2018-11-26 12:58:52,377 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-26 12:58:52,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25844 states. [2018-11-26 12:58:52,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25844 to 15197. [2018-11-26 12:58:52,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15197 states. [2018-11-26 12:58:52,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15197 states to 15197 states and 54478 transitions. [2018-11-26 12:58:52,707 INFO L78 Accepts]: Start accepts. Automaton has 15197 states and 54478 transitions. Word has length 29 [2018-11-26 12:58:52,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-26 12:58:52,708 INFO L480 AbstractCegarLoop]: Abstraction has 15197 states and 54478 transitions. [2018-11-26 12:58:52,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-26 12:58:52,709 INFO L276 IsEmpty]: Start isEmpty. Operand 15197 states and 54478 transitions. [2018-11-26 12:58:52,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-26 12:58:52,712 INFO L394 BasicCegarLoop]: Found error trace [2018-11-26 12:58:52,712 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] [2018-11-26 12:58:52,712 INFO L423 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-26 12:58:52,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-26 12:58:52,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1356359066, now seen corresponding path program 1 times [2018-11-26 12:58:52,713 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-26 12:58:52,713 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 [2018-11-26 12:58:52,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-26 12:58:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-26 12:58:52,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-26 12:58:52,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-26 12:58:52,793 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-26 12:58:52,798 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-26 12:58:52,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-26 12:58:52,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-26 12:58:52,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-26 12:58:52,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-26 12:58:52,801 INFO L87 Difference]: Start difference. First operand 15197 states and 54478 transitions. Second operand 5 states. [2018-11-26 12:58:52,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-26 12:58:52,891 INFO L93 Difference]: Finished difference Result 8213 states and 26746 transitions. [2018-11-26 12:58:52,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-26 12:58:52,892 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2018-11-26 12:58:52,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-26 12:58:52,905 INFO L225 Difference]: With dead ends: 8213 [2018-11-26 12:58:52,906 INFO L226 Difference]: Without dead ends: 8213 [2018-11-26 12:58:52,906 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-26 12:58:52,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8213 states. [2018-11-26 12:58:53,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8213 to 7637. [2018-11-26 12:58:53,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7637 states. [2018-11-26 12:58:53,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7637 states to 7637 states and 24730 transitions. [2018-11-26 12:58:53,070 INFO L78 Accepts]: Start accepts. Automaton has 7637 states and 24730 transitions. Word has length 33 [2018-11-26 12:58:53,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-26 12:58:53,071 INFO L480 AbstractCegarLoop]: Abstraction has 7637 states and 24730 transitions. [2018-11-26 12:58:53,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-26 12:58:53,071 INFO L276 IsEmpty]: Start isEmpty. Operand 7637 states and 24730 transitions. [2018-11-26 12:58:53,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-26 12:58:53,078 INFO L394 BasicCegarLoop]: Found error trace [2018-11-26 12:58:53,078 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] [2018-11-26 12:58:53,078 INFO L423 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-26 12:58:53,078 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-26 12:58:53,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1715420402, now seen corresponding path program 1 times [2018-11-26 12:58:53,079 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-26 12:58:53,079 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 [2018-11-26 12:58:53,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-26 12:58:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-26 12:58:53,146 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-26 12:58:53,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-26 12:58:53,196 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-26 12:58:53,200 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-26 12:58:53,200 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-26 12:58:53,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-26 12:58:53,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-26 12:58:53,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-26 12:58:53,201 INFO L87 Difference]: Start difference. First operand 7637 states and 24730 transitions. Second operand 5 states. [2018-11-26 12:58:53,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-26 12:58:53,353 INFO L93 Difference]: Finished difference Result 11390 states and 37095 transitions. [2018-11-26 12:58:53,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-26 12:58:53,353 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2018-11-26 12:58:53,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-26 12:58:53,376 INFO L225 Difference]: With dead ends: 11390 [2018-11-26 12:58:53,376 INFO L226 Difference]: Without dead ends: 10751 [2018-11-26 12:58:53,377 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-26 12:58:53,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10751 states. [2018-11-26 12:58:53,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10751 to 7322. [2018-11-26 12:58:53,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7322 states. [2018-11-26 12:58:53,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7322 states to 7322 states and 23826 transitions. [2018-11-26 12:58:53,540 INFO L78 Accepts]: Start accepts. Automaton has 7322 states and 23826 transitions. Word has length 38 [2018-11-26 12:58:53,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-26 12:58:53,541 INFO L480 AbstractCegarLoop]: Abstraction has 7322 states and 23826 transitions. [2018-11-26 12:58:53,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-26 12:58:53,541 INFO L276 IsEmpty]: Start isEmpty. Operand 7322 states and 23826 transitions. [2018-11-26 12:58:53,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-26 12:58:53,545 INFO L394 BasicCegarLoop]: Found error trace [2018-11-26 12:58:53,545 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] [2018-11-26 12:58:53,546 INFO L423 AbstractCegarLoop]: === Iteration 7 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-26 12:58:53,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-26 12:58:53,546 INFO L82 PathProgramCache]: Analyzing trace with hash 140136184, now seen corresponding path program 2 times [2018-11-26 12:58:53,546 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-26 12:58:53,546 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 [2018-11-26 12:58:53,568 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-26 12:58:53,832 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-26 12:58:53,832 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2018-11-26 12:58:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-26 12:58:54,141 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-26 12:58:54,142 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) [2018-11-26 12:58:54,146 INFO L168 Benchmark]: Toolchain (without parser) took 9406.42 ms. Allocated memory was 1.0 GB in the beginning and 1.9 GB in the end (delta: 869.8 MB). Free memory was 949.7 MB in the beginning and 1.5 GB in the end (delta: -521.3 MB). Peak memory consumption was 348.5 MB. Max. memory is 11.5 GB. [2018-11-26 12:58:54,148 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-26 12:58:54,149 INFO L168 Benchmark]: CACSL2BoogieTranslator took 551.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -159.7 MB). Peak memory consumption was 32.4 MB. Max. memory is 11.5 GB. [2018-11-26 12:58:54,150 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.54 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. [2018-11-26 12:58:54,150 INFO L168 Benchmark]: Boogie Preprocessor took 26.29 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. [2018-11-26 12:58:54,151 INFO L168 Benchmark]: RCFGBuilder took 343.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.1 MB). Peak memory consumption was 32.1 MB. Max. memory is 11.5 GB. [2018-11-26 12:58:54,151 INFO L168 Benchmark]: TraceAbstraction took 8436.44 ms. Allocated memory was 1.2 GB in the beginning and 1.9 GB in the end (delta: 731.9 MB). Free memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: -399.1 MB). Peak memory consumption was 332.9 MB. Max. memory is 11.5 GB. [2018-11-26 12:58:54,156 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 551.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -159.7 MB). Peak memory consumption was 32.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 45.54 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.29 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 343.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.1 MB). Peak memory consumption was 32.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8436.44 ms. Allocated memory was 1.2 GB in the beginning and 1.9 GB in the end (delta: 731.9 MB). Free memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: -399.1 MB). Peak memory consumption was 332.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...