./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock_false-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer --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=/tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer --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 0.1.23-635dfa2 [2018-12-02 21:21:00,639 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 21:21:00,640 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 21:21:00,646 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 21:21:00,646 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 21:21:00,647 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 21:21:00,647 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 21:21:00,648 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 21:21:00,649 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 21:21:00,649 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 21:21:00,650 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 21:21:00,650 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 21:21:00,650 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 21:21:00,651 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 21:21:00,651 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 21:21:00,651 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 21:21:00,652 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 21:21:00,653 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 21:21:00,654 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 21:21:00,654 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 21:21:00,655 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 21:21:00,655 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 21:21:00,656 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 21:21:00,656 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 21:21:00,657 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 21:21:00,657 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 21:21:00,657 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 21:21:00,658 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 21:21:00,658 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 21:21:00,659 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 21:21:00,659 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 21:21:00,659 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 21:21:00,659 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 21:21:00,659 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 21:21:00,660 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 21:21:00,660 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 21:21:00,660 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-02 21:21:00,667 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 21:21:00,667 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 21:21:00,668 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 21:21:00,668 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 21:21:00,668 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 21:21:00,668 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 21:21:00,668 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 21:21:00,668 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 21:21:00,668 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 21:21:00,669 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 21:21:00,669 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 21:21:00,669 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 21:21:00,669 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 21:21:00,669 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 21:21:00,669 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 21:21:00,669 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 21:21:00,669 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 21:21:00,669 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 21:21:00,669 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 21:21:00,669 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 21:21:00,670 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 21:21:00,670 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 21:21:00,670 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 21:21:00,670 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 21:21:00,670 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 21:21:00,670 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 21:21:00,670 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 21:21:00,670 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-02 21:21:00,670 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 21:21:00,670 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 21:21:00,671 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a44ec3fe14113a3aba74e37fda369041ad122ce [2018-12-02 21:21:00,688 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 21:21:00,697 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 21:21:00,700 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 21:21:00,701 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 21:21:00,701 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 21:21:00,702 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer/../../sv-benchmarks/c/pthread-atomic/read_write_lock_false-unreach-call.i [2018-12-02 21:21:00,741 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer/data/585931cf8/cfc1b480dfed43179363082bfd908d24/FLAG480d504d3 [2018-12-02 21:21:01,220 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 21:21:01,221 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/sv-benchmarks/c/pthread-atomic/read_write_lock_false-unreach-call.i [2018-12-02 21:21:01,230 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer/data/585931cf8/cfc1b480dfed43179363082bfd908d24/FLAG480d504d3 [2018-12-02 21:21:01,241 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer/data/585931cf8/cfc1b480dfed43179363082bfd908d24 [2018-12-02 21:21:01,244 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 21:21:01,245 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 21:21:01,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 21:21:01,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 21:21:01,248 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 21:21:01,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:21:01" (1/1) ... [2018-12-02 21:21:01,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22a1c481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:21:01, skipping insertion in model container [2018-12-02 21:21:01,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:21:01" (1/1) ... [2018-12-02 21:21:01,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 21:21:01,281 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 21:21:01,452 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 21:21:01,459 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 21:21:01,521 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 21:21:01,550 INFO L195 MainTranslator]: Completed translation [2018-12-02 21:21:01,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:21:01 WrapperNode [2018-12-02 21:21:01,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 21:21:01,551 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 21:21:01,551 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 21:21:01,551 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 21:21:01,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:21:01" (1/1) ... [2018-12-02 21:21:01,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:21:01" (1/1) ... [2018-12-02 21:21:01,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 21:21:01,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 21:21:01,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 21:21:01,581 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 21:21:01,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:21:01" (1/1) ... [2018-12-02 21:21:01,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:21:01" (1/1) ... [2018-12-02 21:21:01,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:21:01" (1/1) ... [2018-12-02 21:21:01,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:21:01" (1/1) ... [2018-12-02 21:21:01,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:21:01" (1/1) ... [2018-12-02 21:21:01,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:21:01" (1/1) ... [2018-12-02 21:21:01,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:21:01" (1/1) ... [2018-12-02 21:21:01,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 21:21:01,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 21:21:01,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 21:21:01,597 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 21:21:01,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:21:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 21:21:01,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 21:21:01,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 21:21:01,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-02 21:21:01,644 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2018-12-02 21:21:01,644 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2018-12-02 21:21:01,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 21:21:01,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 21:21:01,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 21:21:01,644 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2018-12-02 21:21:01,645 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2018-12-02 21:21:01,646 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-02 21:21:01,715 INFO L1421 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_read_lock_returnLabel [2018-12-02 21:21:01,789 INFO L1421 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_write_lock_returnLabel [2018-12-02 21:21:01,795 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 21:21:01,795 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-02 21:21:01,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:21:01 BoogieIcfgContainer [2018-12-02 21:21:01,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 21:21:01,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 21:21:01,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 21:21:01,798 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 21:21:01,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 09:21:01" (1/3) ... [2018-12-02 21:21:01,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7861fa37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:21:01, skipping insertion in model container [2018-12-02 21:21:01,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:21:01" (2/3) ... [2018-12-02 21:21:01,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7861fa37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:21:01, skipping insertion in model container [2018-12-02 21:21:01,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:21:01" (3/3) ... [2018-12-02 21:21:01,800 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock_false-unreach-call.i [2018-12-02 21:21:01,820 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,820 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,820 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,820 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,820 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,820 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,820 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,821 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,821 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,821 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,821 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,821 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,821 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,821 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,821 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,821 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,822 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,822 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,822 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,822 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,822 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,822 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,822 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,823 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,823 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,823 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,823 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,823 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,823 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,823 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,823 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,823 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,824 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,824 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:01,846 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-02 21:21:01,846 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 21:21:01,851 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-02 21:21:01,860 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-02 21:21:01,873 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 21:21:01,874 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 21:21:01,874 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 21:21:01,874 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 21:21:01,874 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 21:21:01,874 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 21:21:01,874 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 21:21:01,874 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 21:21:01,874 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 21:21:01,880 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84places, 93 transitions [2018-12-02 21:21:03,093 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26397 states. [2018-12-02 21:21:03,094 INFO L276 IsEmpty]: Start isEmpty. Operand 26397 states. [2018-12-02 21:21:03,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-02 21:21:03,100 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 21:21:03,101 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 21:21:03,102 INFO L423 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 21:21:03,106 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:21:03,106 INFO L82 PathProgramCache]: Analyzing trace with hash 563310493, now seen corresponding path program 1 times [2018-12-02 21:21:03,107 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:21:03,107 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:21:03,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:21:03,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:21:03,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:21:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:21:03,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:21:03,219 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 21:21:03,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 21:21:03,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 21:21:03,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 21:21:03,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 21:21:03,231 INFO L87 Difference]: Start difference. First operand 26397 states. Second operand 4 states. [2018-12-02 21:21:03,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 21:21:03,654 INFO L93 Difference]: Finished difference Result 52906 states and 202299 transitions. [2018-12-02 21:21:03,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 21:21:03,656 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-12-02 21:21:03,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 21:21:03,785 INFO L225 Difference]: With dead ends: 52906 [2018-12-02 21:21:03,785 INFO L226 Difference]: Without dead ends: 36824 [2018-12-02 21:21:03,786 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-02 21:21:03,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36824 states. [2018-12-02 21:21:04,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36824 to 22832. [2018-12-02 21:21:04,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22832 states. [2018-12-02 21:21:04,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22832 states to 22832 states and 87504 transitions. [2018-12-02 21:21:04,504 INFO L78 Accepts]: Start accepts. Automaton has 22832 states and 87504 transitions. Word has length 23 [2018-12-02 21:21:04,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 21:21:04,505 INFO L480 AbstractCegarLoop]: Abstraction has 22832 states and 87504 transitions. [2018-12-02 21:21:04,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 21:21:04,505 INFO L276 IsEmpty]: Start isEmpty. Operand 22832 states and 87504 transitions. [2018-12-02 21:21:04,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-02 21:21:04,506 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 21:21:04,506 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 21:21:04,507 INFO L423 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 21:21:04,507 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:21:04,507 INFO L82 PathProgramCache]: Analyzing trace with hash 175754366, now seen corresponding path program 1 times [2018-12-02 21:21:04,507 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:21:04,507 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:21:04,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:21:04,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:21:04,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:21:04,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:21:04,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:21:04,561 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 21:21:04,561 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 21:21:04,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 21:21:04,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 21:21:04,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 21:21:04,563 INFO L87 Difference]: Start difference. First operand 22832 states and 87504 transitions. Second operand 4 states. [2018-12-02 21:21:04,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 21:21:04,734 INFO L93 Difference]: Finished difference Result 36860 states and 131462 transitions. [2018-12-02 21:21:04,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 21:21:04,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-12-02 21:21:04,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 21:21:04,837 INFO L225 Difference]: With dead ends: 36860 [2018-12-02 21:21:04,837 INFO L226 Difference]: Without dead ends: 36500 [2018-12-02 21:21:04,837 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 21:21:05,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36500 states. [2018-12-02 21:21:05,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36500 to 24815. [2018-12-02 21:21:05,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24815 states. [2018-12-02 21:21:05,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24815 states to 24815 states and 89636 transitions. [2018-12-02 21:21:05,349 INFO L78 Accepts]: Start accepts. Automaton has 24815 states and 89636 transitions. Word has length 25 [2018-12-02 21:21:05,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 21:21:05,349 INFO L480 AbstractCegarLoop]: Abstraction has 24815 states and 89636 transitions. [2018-12-02 21:21:05,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 21:21:05,349 INFO L276 IsEmpty]: Start isEmpty. Operand 24815 states and 89636 transitions. [2018-12-02 21:21:05,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-02 21:21:05,350 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 21:21:05,350 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 21:21:05,351 INFO L423 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 21:21:05,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:21:05,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1318827774, now seen corresponding path program 2 times [2018-12-02 21:21:05,351 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:21:05,351 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:21:05,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:21:05,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:21:05,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:21:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:21:05,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:21:05,395 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 21:21:05,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 21:21:05,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 21:21:05,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 21:21:05,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-02 21:21:05,396 INFO L87 Difference]: Start difference. First operand 24815 states and 89636 transitions. Second operand 5 states. [2018-12-02 21:21:05,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 21:21:05,455 INFO L93 Difference]: Finished difference Result 14369 states and 47935 transitions. [2018-12-02 21:21:05,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 21:21:05,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-12-02 21:21:05,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 21:21:05,482 INFO L225 Difference]: With dead ends: 14369 [2018-12-02 21:21:05,482 INFO L226 Difference]: Without dead ends: 13889 [2018-12-02 21:21:05,482 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-02 21:21:05,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13889 states. [2018-12-02 21:21:05,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13889 to 13889. [2018-12-02 21:21:05,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13889 states. [2018-12-02 21:21:05,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13889 states to 13889 states and 46343 transitions. [2018-12-02 21:21:05,800 INFO L78 Accepts]: Start accepts. Automaton has 13889 states and 46343 transitions. Word has length 25 [2018-12-02 21:21:05,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 21:21:05,801 INFO L480 AbstractCegarLoop]: Abstraction has 13889 states and 46343 transitions. [2018-12-02 21:21:05,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 21:21:05,801 INFO L276 IsEmpty]: Start isEmpty. Operand 13889 states and 46343 transitions. [2018-12-02 21:21:05,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-02 21:21:05,803 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 21:21:05,803 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 21:21:05,803 INFO L423 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 21:21:05,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:21:05,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1891005508, now seen corresponding path program 1 times [2018-12-02 21:21:05,803 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:21:05,803 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:21:05,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:21:05,806 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 21:21:05,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:21:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:21:05,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:21:05,831 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 21:21:05,832 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 21:21:05,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 21:21:05,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 21:21:05,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 21:21:05,832 INFO L87 Difference]: Start difference. First operand 13889 states and 46343 transitions. Second operand 4 states. [2018-12-02 21:21:05,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 21:21:05,910 INFO L93 Difference]: Finished difference Result 14756 states and 48986 transitions. [2018-12-02 21:21:05,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 21:21:05,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-12-02 21:21:05,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 21:21:05,926 INFO L225 Difference]: With dead ends: 14756 [2018-12-02 21:21:05,926 INFO L226 Difference]: Without dead ends: 8996 [2018-12-02 21:21:05,926 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-02 21:21:05,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8996 states. [2018-12-02 21:21:06,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8996 to 7637. [2018-12-02 21:21:06,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7637 states. [2018-12-02 21:21:06,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7637 states to 7637 states and 24730 transitions. [2018-12-02 21:21:06,026 INFO L78 Accepts]: Start accepts. Automaton has 7637 states and 24730 transitions. Word has length 29 [2018-12-02 21:21:06,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 21:21:06,027 INFO L480 AbstractCegarLoop]: Abstraction has 7637 states and 24730 transitions. [2018-12-02 21:21:06,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 21:21:06,027 INFO L276 IsEmpty]: Start isEmpty. Operand 7637 states and 24730 transitions. [2018-12-02 21:21:06,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-02 21:21:06,032 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 21:21:06,032 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 21:21:06,032 INFO L423 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 21:21:06,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:21:06,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1715420402, now seen corresponding path program 1 times [2018-12-02 21:21:06,033 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:21:06,033 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:21:06,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:21:06,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:21:06,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:21:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:21:06,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:21:06,090 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 21:21:06,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-02 21:21:06,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 21:21:06,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 21:21:06,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-02 21:21:06,091 INFO L87 Difference]: Start difference. First operand 7637 states and 24730 transitions. Second operand 6 states. [2018-12-02 21:21:06,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 21:21:06,174 INFO L93 Difference]: Finished difference Result 8537 states and 27535 transitions. [2018-12-02 21:21:06,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 21:21:06,175 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2018-12-02 21:21:06,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 21:21:06,186 INFO L225 Difference]: With dead ends: 8537 [2018-12-02 21:21:06,186 INFO L226 Difference]: Without dead ends: 7898 [2018-12-02 21:21:06,186 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-12-02 21:21:06,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7898 states. [2018-12-02 21:21:06,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7898 to 7322. [2018-12-02 21:21:06,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7322 states. [2018-12-02 21:21:06,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7322 states to 7322 states and 23826 transitions. [2018-12-02 21:21:06,281 INFO L78 Accepts]: Start accepts. Automaton has 7322 states and 23826 transitions. Word has length 38 [2018-12-02 21:21:06,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 21:21:06,281 INFO L480 AbstractCegarLoop]: Abstraction has 7322 states and 23826 transitions. [2018-12-02 21:21:06,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 21:21:06,281 INFO L276 IsEmpty]: Start isEmpty. Operand 7322 states and 23826 transitions. [2018-12-02 21:21:06,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-02 21:21:06,284 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 21:21:06,284 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 21:21:06,284 INFO L423 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 21:21:06,285 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:21:06,285 INFO L82 PathProgramCache]: Analyzing trace with hash 140136184, now seen corresponding path program 2 times [2018-12-02 21:21:06,285 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:21:06,285 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:21:06,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:21:06,286 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:21:06,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:21:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:21:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:21:06,315 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:110) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:87) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.computeIcfgProgramExecution(IcfgProgramExecutionBuilder.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.getIcfgProgramExecution(IcfgProgramExecutionBuilder.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecution(TraceCheck.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:344) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-12-02 21:21:06,318 INFO L168 Benchmark]: Toolchain (without parser) took 5073.57 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 506.5 MB). Free memory was 949.5 MB in the beginning and 856.1 MB in the end (delta: 93.4 MB). Peak memory consumption was 599.9 MB. Max. memory is 11.5 GB. [2018-12-02 21:21:06,319 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 21:21:06,319 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.36 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 96.5 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -130.8 MB). Peak memory consumption was 30.4 MB. Max. memory is 11.5 GB. [2018-12-02 21:21:06,319 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.87 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-02 21:21:06,320 INFO L168 Benchmark]: Boogie Preprocessor took 15.88 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 21:21:06,320 INFO L168 Benchmark]: RCFGBuilder took 198.71 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: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. [2018-12-02 21:21:06,320 INFO L168 Benchmark]: TraceAbstraction took 4521.01 ms. Allocated memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: 410.0 MB). Free memory was 1.0 GB in the beginning and 856.1 MB in the end (delta: 191.6 MB). Peak memory consumption was 601.6 MB. Max. memory is 11.5 GB. [2018-12-02 21:21:06,322 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 305.36 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 96.5 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -130.8 MB). Peak memory consumption was 30.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.87 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.88 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 198.71 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: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4521.01 ms. Allocated memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: 410.0 MB). Free memory was 1.0 GB in the beginning and 856.1 MB in the end (delta: 191.6 MB). Peak memory consumption was 601.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-02 21:21:07,796 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 21:21:07,797 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 21:21:07,803 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 21:21:07,803 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 21:21:07,804 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 21:21:07,804 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 21:21:07,805 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 21:21:07,806 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 21:21:07,806 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 21:21:07,807 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 21:21:07,807 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 21:21:07,808 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 21:21:07,808 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 21:21:07,809 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 21:21:07,809 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 21:21:07,810 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 21:21:07,810 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 21:21:07,811 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 21:21:07,812 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 21:21:07,813 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 21:21:07,813 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 21:21:07,814 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 21:21:07,814 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 21:21:07,814 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 21:21:07,815 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 21:21:07,815 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 21:21:07,816 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 21:21:07,816 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 21:21:07,817 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 21:21:07,817 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 21:21:07,817 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 21:21:07,818 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 21:21:07,818 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 21:21:07,818 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 21:21:07,819 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 21:21:07,819 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-12-02 21:21:07,826 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 21:21:07,826 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 21:21:07,827 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 21:21:07,827 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 21:21:07,827 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 21:21:07,827 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 21:21:07,827 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 21:21:07,827 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 21:21:07,828 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 21:21:07,828 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 21:21:07,828 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 21:21:07,828 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 21:21:07,828 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 21:21:07,828 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 21:21:07,828 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-02 21:21:07,828 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-02 21:21:07,829 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 21:21:07,829 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 21:21:07,829 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 21:21:07,829 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 21:21:07,829 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 21:21:07,829 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 21:21:07,829 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 21:21:07,829 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 21:21:07,830 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 21:21:07,830 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 21:21:07,830 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 21:21:07,830 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 21:21:07,830 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-02 21:21:07,830 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 21:21:07,830 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-02 21:21:07,831 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-02 21:21:07,831 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a44ec3fe14113a3aba74e37fda369041ad122ce [2018-12-02 21:21:07,849 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 21:21:07,859 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 21:21:07,861 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 21:21:07,863 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 21:21:07,863 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 21:21:07,863 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer/../../sv-benchmarks/c/pthread-atomic/read_write_lock_false-unreach-call.i [2018-12-02 21:21:07,903 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer/data/6a92e2a76/7ebf36ef730a45e3be0017b02fd2c849/FLAG763290e1c [2018-12-02 21:21:08,341 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 21:21:08,342 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/sv-benchmarks/c/pthread-atomic/read_write_lock_false-unreach-call.i [2018-12-02 21:21:08,348 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer/data/6a92e2a76/7ebf36ef730a45e3be0017b02fd2c849/FLAG763290e1c [2018-12-02 21:21:08,356 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer/data/6a92e2a76/7ebf36ef730a45e3be0017b02fd2c849 [2018-12-02 21:21:08,358 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 21:21:08,359 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 21:21:08,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 21:21:08,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 21:21:08,362 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 21:21:08,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:21:08" (1/1) ... [2018-12-02 21:21:08,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74da31a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:21:08, skipping insertion in model container [2018-12-02 21:21:08,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:21:08" (1/1) ... [2018-12-02 21:21:08,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 21:21:08,386 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 21:21:08,545 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 21:21:08,554 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 21:21:08,580 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 21:21:08,645 INFO L195 MainTranslator]: Completed translation [2018-12-02 21:21:08,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:21:08 WrapperNode [2018-12-02 21:21:08,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 21:21:08,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 21:21:08,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 21:21:08,646 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 21:21:08,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:21:08" (1/1) ... [2018-12-02 21:21:08,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:21:08" (1/1) ... [2018-12-02 21:21:08,675 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 21:21:08,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 21:21:08,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 21:21:08,676 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 21:21:08,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:21:08" (1/1) ... [2018-12-02 21:21:08,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:21:08" (1/1) ... [2018-12-02 21:21:08,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:21:08" (1/1) ... [2018-12-02 21:21:08,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:21:08" (1/1) ... [2018-12-02 21:21:08,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:21:08" (1/1) ... [2018-12-02 21:21:08,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:21:08" (1/1) ... [2018-12-02 21:21:08,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:21:08" (1/1) ... [2018-12-02 21:21:08,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 21:21:08,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 21:21:08,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 21:21:08,691 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 21:21:08,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:21:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 21:21:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 21:21:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-02 21:21:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2018-12-02 21:21:08,722 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2018-12-02 21:21:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 21:21:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-02 21:21:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 21:21:08,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 21:21:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2018-12-02 21:21:08,722 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2018-12-02 21:21:08,723 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-02 21:21:08,789 INFO L1421 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_read_lock_returnLabel [2018-12-02 21:21:08,877 INFO L1421 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_write_lock_returnLabel [2018-12-02 21:21:08,883 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 21:21:08,884 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-02 21:21:08,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:21:08 BoogieIcfgContainer [2018-12-02 21:21:08,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 21:21:08,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 21:21:08,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 21:21:08,886 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 21:21:08,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 09:21:08" (1/3) ... [2018-12-02 21:21:08,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311f9c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:21:08, skipping insertion in model container [2018-12-02 21:21:08,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:21:08" (2/3) ... [2018-12-02 21:21:08,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311f9c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:21:08, skipping insertion in model container [2018-12-02 21:21:08,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:21:08" (3/3) ... [2018-12-02 21:21:08,888 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock_false-unreach-call.i [2018-12-02 21:21:08,912 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,912 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,913 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,913 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,913 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,913 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,914 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,914 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,914 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,914 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,914 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,915 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,915 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,915 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,915 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,915 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,916 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,916 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,916 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,916 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,916 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,916 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,917 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,917 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,917 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,917 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,918 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,918 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,918 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,918 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,918 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,918 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,919 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,919 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 21:21:08,947 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-02 21:21:08,948 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 21:21:08,952 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-02 21:21:08,961 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-02 21:21:08,977 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 21:21:08,978 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 21:21:08,978 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 21:21:08,978 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 21:21:08,978 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 21:21:08,978 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 21:21:08,978 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 21:21:08,978 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 21:21:08,978 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 21:21:08,985 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84places, 93 transitions [2018-12-02 21:21:10,219 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26397 states. [2018-12-02 21:21:10,220 INFO L276 IsEmpty]: Start isEmpty. Operand 26397 states. [2018-12-02 21:21:10,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-02 21:21:10,226 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 21:21:10,226 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 21:21:10,228 INFO L423 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 21:21:10,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:21:10,232 INFO L82 PathProgramCache]: Analyzing trace with hash 563310493, now seen corresponding path program 1 times [2018-12-02 21:21:10,234 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 21:21:10,235 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 21:21:10,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:21:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:21:10,292 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:21:10,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:21:10,322 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 21:21:10,324 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 21:21:10,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 21:21:10,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 21:21:10,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 21:21:10,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 21:21:10,336 INFO L87 Difference]: Start difference. First operand 26397 states. Second operand 4 states. [2018-12-02 21:21:10,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 21:21:10,675 INFO L93 Difference]: Finished difference Result 52906 states and 202299 transitions. [2018-12-02 21:21:10,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 21:21:10,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-12-02 21:21:10,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 21:21:10,809 INFO L225 Difference]: With dead ends: 52906 [2018-12-02 21:21:10,809 INFO L226 Difference]: Without dead ends: 36824 [2018-12-02 21:21:10,810 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-02 21:21:11,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36824 states. [2018-12-02 21:21:11,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36824 to 22832. [2018-12-02 21:21:11,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22832 states. [2018-12-02 21:21:11,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22832 states to 22832 states and 87504 transitions. [2018-12-02 21:21:11,504 INFO L78 Accepts]: Start accepts. Automaton has 22832 states and 87504 transitions. Word has length 23 [2018-12-02 21:21:11,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 21:21:11,505 INFO L480 AbstractCegarLoop]: Abstraction has 22832 states and 87504 transitions. [2018-12-02 21:21:11,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 21:21:11,505 INFO L276 IsEmpty]: Start isEmpty. Operand 22832 states and 87504 transitions. [2018-12-02 21:21:11,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-02 21:21:11,506 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 21:21:11,506 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 21:21:11,507 INFO L423 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 21:21:11,507 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:21:11,507 INFO L82 PathProgramCache]: Analyzing trace with hash 175754366, now seen corresponding path program 1 times [2018-12-02 21:21:11,507 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 21:21:11,507 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 21:21:11,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:21:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:21:11,541 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:21:11,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:21:11,554 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 21:21:11,555 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 21:21:11,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 21:21:11,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 21:21:11,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 21:21:11,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 21:21:11,557 INFO L87 Difference]: Start difference. First operand 22832 states and 87504 transitions. Second operand 4 states. [2018-12-02 21:21:11,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 21:21:11,786 INFO L93 Difference]: Finished difference Result 44834 states and 165805 transitions. [2018-12-02 21:21:11,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 21:21:11,786 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-12-02 21:21:11,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 21:21:12,009 INFO L225 Difference]: With dead ends: 44834 [2018-12-02 21:21:12,009 INFO L226 Difference]: Without dead ends: 44474 [2018-12-02 21:21:12,009 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 21:21:12,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44474 states. [2018-12-02 21:21:12,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44474 to 24815. [2018-12-02 21:21:12,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24815 states. [2018-12-02 21:21:12,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24815 states to 24815 states and 92018 transitions. [2018-12-02 21:21:12,491 INFO L78 Accepts]: Start accepts. Automaton has 24815 states and 92018 transitions. Word has length 25 [2018-12-02 21:21:12,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 21:21:12,491 INFO L480 AbstractCegarLoop]: Abstraction has 24815 states and 92018 transitions. [2018-12-02 21:21:12,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 21:21:12,492 INFO L276 IsEmpty]: Start isEmpty. Operand 24815 states and 92018 transitions. [2018-12-02 21:21:12,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-02 21:21:12,493 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 21:21:12,493 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 21:21:12,493 INFO L423 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 21:21:12,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:21:12,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1318827774, now seen corresponding path program 2 times [2018-12-02 21:21:12,494 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 21:21:12,494 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 21:21:12,513 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-12-02 21:21:12,531 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-12-02 21:21:12,531 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 21:21:12,533 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:21:12,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:21:12,537 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 21:21:12,539 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 21:21:12,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 21:21:12,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 21:21:12,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 21:21:12,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 21:21:12,540 INFO L87 Difference]: Start difference. First operand 24815 states and 92018 transitions. Second operand 3 states. [2018-12-02 21:21:12,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 21:21:12,600 INFO L93 Difference]: Finished difference Result 18827 states and 66927 transitions. [2018-12-02 21:21:12,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 21:21:12,600 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-12-02 21:21:12,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 21:21:12,638 INFO L225 Difference]: With dead ends: 18827 [2018-12-02 21:21:12,638 INFO L226 Difference]: Without dead ends: 18347 [2018-12-02 21:21:12,639 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 21:21:12,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18347 states. [2018-12-02 21:21:12,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18347 to 18347. [2018-12-02 21:21:12,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18347 states. [2018-12-02 21:21:12,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18347 states to 18347 states and 65335 transitions. [2018-12-02 21:21:12,974 INFO L78 Accepts]: Start accepts. Automaton has 18347 states and 65335 transitions. Word has length 25 [2018-12-02 21:21:12,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 21:21:12,975 INFO L480 AbstractCegarLoop]: Abstraction has 18347 states and 65335 transitions. [2018-12-02 21:21:12,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 21:21:12,975 INFO L276 IsEmpty]: Start isEmpty. Operand 18347 states and 65335 transitions. [2018-12-02 21:21:12,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-02 21:21:12,977 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 21:21:12,977 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 21:21:12,977 INFO L423 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 21:21:12,977 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:21:12,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1891005508, now seen corresponding path program 1 times [2018-12-02 21:21:12,977 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 21:21:12,978 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 21:21:12,995 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 21:21:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:21:13,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:21:13,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:21:13,019 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 21:21:13,020 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 21:21:13,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 21:21:13,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 21:21:13,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 21:21:13,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 21:21:13,021 INFO L87 Difference]: Start difference. First operand 18347 states and 65335 transitions. Second operand 4 states. [2018-12-02 21:21:13,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 21:21:13,171 INFO L93 Difference]: Finished difference Result 32444 states and 115032 transitions. [2018-12-02 21:21:13,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 21:21:13,172 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-12-02 21:21:13,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 21:21:13,219 INFO L225 Difference]: With dead ends: 32444 [2018-12-02 21:21:13,219 INFO L226 Difference]: Without dead ends: 25844 [2018-12-02 21:21:13,220 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-02 21:21:13,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25844 states. [2018-12-02 21:21:13,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25844 to 15197. [2018-12-02 21:21:13,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15197 states. [2018-12-02 21:21:13,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15197 states to 15197 states and 54478 transitions. [2018-12-02 21:21:13,495 INFO L78 Accepts]: Start accepts. Automaton has 15197 states and 54478 transitions. Word has length 29 [2018-12-02 21:21:13,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 21:21:13,496 INFO L480 AbstractCegarLoop]: Abstraction has 15197 states and 54478 transitions. [2018-12-02 21:21:13,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 21:21:13,496 INFO L276 IsEmpty]: Start isEmpty. Operand 15197 states and 54478 transitions. [2018-12-02 21:21:13,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-02 21:21:13,498 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 21:21:13,498 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 21:21:13,498 INFO L423 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 21:21:13,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:21:13,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1356359066, now seen corresponding path program 1 times [2018-12-02 21:21:13,499 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 21:21:13,499 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 21:21:13,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:21:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:21:13,543 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:21:13,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:21:13,561 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 21:21:13,562 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 21:21:13,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 21:21:13,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 21:21:13,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 21:21:13,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-02 21:21:13,563 INFO L87 Difference]: Start difference. First operand 15197 states and 54478 transitions. Second operand 5 states. [2018-12-02 21:21:13,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 21:21:13,612 INFO L93 Difference]: Finished difference Result 8213 states and 26746 transitions. [2018-12-02 21:21:13,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 21:21:13,613 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2018-12-02 21:21:13,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 21:21:13,623 INFO L225 Difference]: With dead ends: 8213 [2018-12-02 21:21:13,623 INFO L226 Difference]: Without dead ends: 8213 [2018-12-02 21:21:13,624 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-02 21:21:13,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8213 states. [2018-12-02 21:21:13,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8213 to 7637. [2018-12-02 21:21:13,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7637 states. [2018-12-02 21:21:13,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7637 states to 7637 states and 24730 transitions. [2018-12-02 21:21:13,739 INFO L78 Accepts]: Start accepts. Automaton has 7637 states and 24730 transitions. Word has length 33 [2018-12-02 21:21:13,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 21:21:13,739 INFO L480 AbstractCegarLoop]: Abstraction has 7637 states and 24730 transitions. [2018-12-02 21:21:13,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 21:21:13,739 INFO L276 IsEmpty]: Start isEmpty. Operand 7637 states and 24730 transitions. [2018-12-02 21:21:13,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-02 21:21:13,743 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 21:21:13,744 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 21:21:13,744 INFO L423 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 21:21:13,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:21:13,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1715420402, now seen corresponding path program 1 times [2018-12-02 21:21:13,745 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 21:21:13,745 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 21:21:13,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:21:13,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:21:13,782 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:21:13,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:21:13,800 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 21:21:13,802 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 21:21:13,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 21:21:13,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 21:21:13,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 21:21:13,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-02 21:21:13,802 INFO L87 Difference]: Start difference. First operand 7637 states and 24730 transitions. Second operand 5 states. [2018-12-02 21:21:13,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 21:21:13,888 INFO L93 Difference]: Finished difference Result 11390 states and 37095 transitions. [2018-12-02 21:21:13,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 21:21:13,888 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2018-12-02 21:21:13,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 21:21:13,903 INFO L225 Difference]: With dead ends: 11390 [2018-12-02 21:21:13,903 INFO L226 Difference]: Without dead ends: 10751 [2018-12-02 21:21:13,903 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-12-02 21:21:13,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10751 states. [2018-12-02 21:21:14,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10751 to 7322. [2018-12-02 21:21:14,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7322 states. [2018-12-02 21:21:14,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7322 states to 7322 states and 23826 transitions. [2018-12-02 21:21:14,075 INFO L78 Accepts]: Start accepts. Automaton has 7322 states and 23826 transitions. Word has length 38 [2018-12-02 21:21:14,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 21:21:14,075 INFO L480 AbstractCegarLoop]: Abstraction has 7322 states and 23826 transitions. [2018-12-02 21:21:14,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 21:21:14,076 INFO L276 IsEmpty]: Start isEmpty. Operand 7322 states and 23826 transitions. [2018-12-02 21:21:14,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-02 21:21:14,078 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 21:21:14,078 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] [2018-12-02 21:21:14,078 INFO L423 AbstractCegarLoop]: === Iteration 7 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 21:21:14,078 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:21:14,078 INFO L82 PathProgramCache]: Analyzing trace with hash 140136184, now seen corresponding path program 2 times [2018-12-02 21:21:14,079 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 21:21:14,079 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1bdd0e88-f551-4df7-9ce4-06b6e54fa9db/bin-2019/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 21:21:14,094 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-12-02 21:21:14,151 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-12-02 21:21:14,151 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2018-12-02 21:21:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:21:14,427 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 21:21:14,428 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:110) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:87) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.computeIcfgProgramExecution(IcfgProgramExecutionBuilder.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.getIcfgProgramExecution(IcfgProgramExecutionBuilder.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecution(TraceCheck.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:344) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-12-02 21:21:14,433 INFO L168 Benchmark]: Toolchain (without parser) took 6073.70 ms. Allocated memory was 1.0 GB in the beginning and 1.9 GB in the end (delta: 868.2 MB). Free memory was 939.3 MB in the beginning and 1.4 GB in the end (delta: -486.8 MB). Peak memory consumption was 381.4 MB. Max. memory is 11.5 GB. [2018-12-02 21:21:14,435 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 21:21:14,436 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 939.3 MB in the beginning and 1.2 GB in the end (delta: -213.0 MB). Peak memory consumption was 49.6 MB. Max. memory is 11.5 GB. [2018-12-02 21:21:14,437 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2018-12-02 21:21:14,437 INFO L168 Benchmark]: Boogie Preprocessor took 15.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 21:21:14,438 INFO L168 Benchmark]: RCFGBuilder took 193.20 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: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. [2018-12-02 21:21:14,439 INFO L168 Benchmark]: TraceAbstraction took 5547.26 ms. Allocated memory was 1.2 GB in the beginning and 1.9 GB in the end (delta: 709.4 MB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -304.7 MB). Peak memory consumption was 404.7 MB. Max. memory is 11.5 GB. [2018-12-02 21:21:14,441 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 286.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 939.3 MB in the beginning and 1.2 GB in the end (delta: -213.0 MB). Peak memory consumption was 49.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 193.20 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: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5547.26 ms. Allocated memory was 1.2 GB in the beginning and 1.9 GB in the end (delta: 709.4 MB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -304.7 MB). Peak memory consumption was 404.7 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...