./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/17_szymanski_true-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_94aecc6b-96bf-4d7d-8e43-722297c4f753/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_94aecc6b-96bf-4d7d-8e43-722297c4f753/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_94aecc6b-96bf-4d7d-8e43-722297c4f753/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_94aecc6b-96bf-4d7d-8e43-722297c4f753/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/17_szymanski_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_94aecc6b-96bf-4d7d-8e43-722297c4f753/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_94aecc6b-96bf-4d7d-8e43-722297c4f753/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 58bdd2dd6f7f4bfbe6fbaedc8a62c157487fbf5c ................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 15:10:53,689 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 15:10:53,690 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 15:10:53,697 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 15:10:53,697 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 15:10:53,697 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 15:10:53,698 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 15:10:53,699 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 15:10:53,700 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 15:10:53,700 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 15:10:53,701 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 15:10:53,701 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 15:10:53,701 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 15:10:53,702 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 15:10:53,702 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 15:10:53,703 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 15:10:53,703 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 15:10:53,704 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 15:10:53,705 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 15:10:53,706 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 15:10:53,706 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 15:10:53,707 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 15:10:53,708 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 15:10:53,708 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 15:10:53,708 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 15:10:53,708 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 15:10:53,709 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 15:10:53,709 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 15:10:53,710 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 15:10:53,710 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 15:10:53,710 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 15:10:53,711 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 15:10:53,711 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 15:10:53,711 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 15:10:53,711 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 15:10:53,712 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 15:10:53,712 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_94aecc6b-96bf-4d7d-8e43-722297c4f753/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-02 15:10:53,719 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 15:10:53,719 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 15:10:53,720 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 15:10:53,720 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 15:10:53,720 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 15:10:53,720 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 15:10:53,720 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 15:10:53,720 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 15:10:53,721 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 15:10:53,721 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 15:10:53,721 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 15:10:53,721 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 15:10:53,721 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 15:10:53,721 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 15:10:53,721 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 15:10:53,721 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 15:10:53,722 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 15:10:53,722 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 15:10:53,722 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 15:10:53,722 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 15:10:53,722 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 15:10:53,722 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 15:10:53,722 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 15:10:53,722 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 15:10:53,722 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 15:10:53,722 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 15:10:53,723 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 15:10:53,723 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 15:10:53,723 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 15:10:53,723 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 15:10:53,723 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 15:10:53,723 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 15:10:53,723 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 15:10:53,723 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 15:10:53,723 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 15:10:53,723 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-02 15:10:53,723 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_94aecc6b-96bf-4d7d-8e43-722297c4f753/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58bdd2dd6f7f4bfbe6fbaedc8a62c157487fbf5c [2018-12-02 15:10:53,741 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 15:10:53,750 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 15:10:53,753 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 15:10:53,754 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 15:10:53,754 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 15:10:53,755 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_94aecc6b-96bf-4d7d-8e43-722297c4f753/bin-2019/utaipan/../../sv-benchmarks/c/pthread-ext/17_szymanski_true-unreach-call.i [2018-12-02 15:10:53,794 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_94aecc6b-96bf-4d7d-8e43-722297c4f753/bin-2019/utaipan/data/cc92cdc03/7984d1729016403cb0ccd8b5ef692db9/FLAGe6c7c15eb [2018-12-02 15:10:54,210 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 15:10:54,211 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_94aecc6b-96bf-4d7d-8e43-722297c4f753/sv-benchmarks/c/pthread-ext/17_szymanski_true-unreach-call.i [2018-12-02 15:10:54,217 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_94aecc6b-96bf-4d7d-8e43-722297c4f753/bin-2019/utaipan/data/cc92cdc03/7984d1729016403cb0ccd8b5ef692db9/FLAGe6c7c15eb [2018-12-02 15:10:54,225 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_94aecc6b-96bf-4d7d-8e43-722297c4f753/bin-2019/utaipan/data/cc92cdc03/7984d1729016403cb0ccd8b5ef692db9 [2018-12-02 15:10:54,227 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 15:10:54,229 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 15:10:54,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 15:10:54,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 15:10:54,232 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 15:10:54,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:10:54" (1/1) ... [2018-12-02 15:10:54,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ceaa519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:10:54, skipping insertion in model container [2018-12-02 15:10:54,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:10:54" (1/1) ... [2018-12-02 15:10:54,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 15:10:54,263 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 15:10:54,431 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 15:10:54,478 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 15:10:54,503 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 15:10:54,530 INFO L195 MainTranslator]: Completed translation [2018-12-02 15:10:54,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:10:54 WrapperNode [2018-12-02 15:10:54,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 15:10:54,531 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 15:10:54,531 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 15:10:54,531 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 15:10:54,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:10:54" (1/1) ... [2018-12-02 15:10:54,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:10:54" (1/1) ... [2018-12-02 15:10:54,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 15:10:54,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 15:10:54,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 15:10:54,560 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 15:10:54,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:10:54" (1/1) ... [2018-12-02 15:10:54,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:10:54" (1/1) ... [2018-12-02 15:10:54,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:10:54" (1/1) ... [2018-12-02 15:10:54,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:10:54" (1/1) ... [2018-12-02 15:10:54,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:10:54" (1/1) ... [2018-12-02 15:10:54,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:10:54" (1/1) ... [2018-12-02 15:10:54,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:10:54" (1/1) ... [2018-12-02 15:10:54,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 15:10:54,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 15:10:54,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 15:10:54,581 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 15:10:54,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:10:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94aecc6b-96bf-4d7d-8e43-722297c4f753/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 15:10:54,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 15:10:54,616 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2018-12-02 15:10:54,616 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2018-12-02 15:10:54,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-02 15:10:54,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 15:10:54,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 15:10:54,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 15:10:54,617 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 15:10:54,795 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 15:10:54,795 INFO L280 CfgBuilder]: Removed 16 assue(true) statements. [2018-12-02 15:10:54,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:10:54 BoogieIcfgContainer [2018-12-02 15:10:54,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 15:10:54,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 15:10:54,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 15:10:54,799 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 15:10:54,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:10:54" (1/3) ... [2018-12-02 15:10:54,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65771d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:10:54, skipping insertion in model container [2018-12-02 15:10:54,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:10:54" (2/3) ... [2018-12-02 15:10:54,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65771d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:10:54, skipping insertion in model container [2018-12-02 15:10:54,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:10:54" (3/3) ... [2018-12-02 15:10:54,801 INFO L112 eAbstractionObserver]: Analyzing ICFG 17_szymanski_true-unreach-call.i [2018-12-02 15:10:54,824 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 15:10:54,824 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 15:10:54,824 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 15:10:54,824 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 15:10:54,825 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 15:10:54,825 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 15:10:54,834 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-02 15:10:54,834 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 15:10:54,839 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-02 15:10:54,849 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-02 15:10:54,864 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 15:10:54,864 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 15:10:54,864 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 15:10:54,864 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 15:10:54,864 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 15:10:54,864 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 15:10:54,864 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 15:10:54,864 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 15:10:54,870 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58places, 80 transitions [2018-12-02 15:10:54,890 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 561 states. [2018-12-02 15:10:54,891 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states. [2018-12-02 15:10:54,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-02 15:10:54,898 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 15:10:54,898 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] [2018-12-02 15:10:54,900 INFO L423 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 15:10:54,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 15:10:54,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1530483626, now seen corresponding path program 1 times [2018-12-02 15:10:54,905 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 15:10:54,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:10:54,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 15:10:54,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:10:54,939 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 15:10:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 15:10:54,983 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 15:10:54,984 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 15:10:54,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 15:10:54,984 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 15:10:54,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 15:10:54,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 15:10:54,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 15:10:54,997 INFO L87 Difference]: Start difference. First operand 561 states. Second operand 2 states. [2018-12-02 15:10:55,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 15:10:55,013 INFO L93 Difference]: Finished difference Result 330 states and 830 transitions. [2018-12-02 15:10:55,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 15:10:55,014 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-12-02 15:10:55,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 15:10:55,022 INFO L225 Difference]: With dead ends: 330 [2018-12-02 15:10:55,022 INFO L226 Difference]: Without dead ends: 330 [2018-12-02 15:10:55,023 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 15:10:55,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2018-12-02 15:10:55,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2018-12-02 15:10:55,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2018-12-02 15:10:55,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 830 transitions. [2018-12-02 15:10:55,055 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 830 transitions. Word has length 21 [2018-12-02 15:10:55,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 15:10:55,056 INFO L480 AbstractCegarLoop]: Abstraction has 330 states and 830 transitions. [2018-12-02 15:10:55,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 15:10:55,056 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 830 transitions. [2018-12-02 15:10:55,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-02 15:10:55,056 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 15:10:55,057 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] [2018-12-02 15:10:55,057 INFO L423 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 15:10:55,057 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 15:10:55,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1021673335, now seen corresponding path program 1 times [2018-12-02 15:10:55,057 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 15:10:55,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:10:55,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 15:10:55,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:10:55,060 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 15:10:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 15:10:55,090 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 15:10:55,091 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 15:10:55,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 15:10:55,091 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 15:10:55,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 15:10:55,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 15:10:55,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 15:10:55,093 INFO L87 Difference]: Start difference. First operand 330 states and 830 transitions. Second operand 3 states. [2018-12-02 15:10:55,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 15:10:55,126 INFO L93 Difference]: Finished difference Result 525 states and 1351 transitions. [2018-12-02 15:10:55,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 15:10:55,126 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-12-02 15:10:55,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 15:10:55,128 INFO L225 Difference]: With dead ends: 525 [2018-12-02 15:10:55,128 INFO L226 Difference]: Without dead ends: 525 [2018-12-02 15:10:55,129 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 15:10:55,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2018-12-02 15:10:55,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 347. [2018-12-02 15:10:55,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-12-02 15:10:55,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 873 transitions. [2018-12-02 15:10:55,140 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 873 transitions. Word has length 21 [2018-12-02 15:10:55,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 15:10:55,140 INFO L480 AbstractCegarLoop]: Abstraction has 347 states and 873 transitions. [2018-12-02 15:10:55,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 15:10:55,140 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 873 transitions. [2018-12-02 15:10:55,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-02 15:10:55,141 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 15:10:55,141 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 15:10:55,142 INFO L423 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 15:10:55,142 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 15:10:55,142 INFO L82 PathProgramCache]: Analyzing trace with hash 342078459, now seen corresponding path program 1 times [2018-12-02 15:10:55,142 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 15:10:55,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:10:55,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 15:10:55,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:10:55,145 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 15:10:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 15:10:55,167 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 15:10:55,167 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 15:10:55,167 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 15:10:55,167 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 15:10:55,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 15:10:55,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 15:10:55,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 15:10:55,168 INFO L87 Difference]: Start difference. First operand 347 states and 873 transitions. Second operand 3 states. [2018-12-02 15:10:55,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 15:10:55,183 INFO L93 Difference]: Finished difference Result 493 states and 1264 transitions. [2018-12-02 15:10:55,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 15:10:55,183 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-12-02 15:10:55,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 15:10:55,185 INFO L225 Difference]: With dead ends: 493 [2018-12-02 15:10:55,185 INFO L226 Difference]: Without dead ends: 493 [2018-12-02 15:10:55,185 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 15:10:55,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2018-12-02 15:10:55,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 339. [2018-12-02 15:10:55,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-12-02 15:10:55,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 832 transitions. [2018-12-02 15:10:55,193 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 832 transitions. Word has length 25 [2018-12-02 15:10:55,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 15:10:55,193 INFO L480 AbstractCegarLoop]: Abstraction has 339 states and 832 transitions. [2018-12-02 15:10:55,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 15:10:55,194 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 832 transitions. [2018-12-02 15:10:55,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-02 15:10:55,195 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 15:10:55,195 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] [2018-12-02 15:10:55,195 INFO L423 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 15:10:55,195 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 15:10:55,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1948646166, now seen corresponding path program 1 times [2018-12-02 15:10:55,196 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 15:10:55,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:10:55,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 15:10:55,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:10:55,199 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 15:10:55,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 15:10:55,222 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 15:10:55,222 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 15:10:55,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 15:10:55,222 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 15:10:55,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 15:10:55,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 15:10:55,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 15:10:55,223 INFO L87 Difference]: Start difference. First operand 339 states and 832 transitions. Second operand 3 states. [2018-12-02 15:10:55,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 15:10:55,252 INFO L93 Difference]: Finished difference Result 365 states and 865 transitions. [2018-12-02 15:10:55,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 15:10:55,252 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2018-12-02 15:10:55,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 15:10:55,254 INFO L225 Difference]: With dead ends: 365 [2018-12-02 15:10:55,254 INFO L226 Difference]: Without dead ends: 365 [2018-12-02 15:10:55,254 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 15:10:55,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2018-12-02 15:10:55,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 360. [2018-12-02 15:10:55,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2018-12-02 15:10:55,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 855 transitions. [2018-12-02 15:10:55,259 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 855 transitions. Word has length 34 [2018-12-02 15:10:55,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 15:10:55,259 INFO L480 AbstractCegarLoop]: Abstraction has 360 states and 855 transitions. [2018-12-02 15:10:55,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 15:10:55,259 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 855 transitions. [2018-12-02 15:10:55,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-02 15:10:55,260 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 15:10:55,261 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] [2018-12-02 15:10:55,261 INFO L423 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 15:10:55,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 15:10:55,261 INFO L82 PathProgramCache]: Analyzing trace with hash 349860526, now seen corresponding path program 2 times [2018-12-02 15:10:55,261 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 15:10:55,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:10:55,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 15:10:55,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:10:55,263 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 15:10:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 15:10:55,278 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 15:10:55,279 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 15:10:55,279 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 15:10:55,279 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 15:10:55,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 15:10:55,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 15:10:55,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 15:10:55,279 INFO L87 Difference]: Start difference. First operand 360 states and 855 transitions. Second operand 3 states. [2018-12-02 15:10:55,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 15:10:55,308 INFO L93 Difference]: Finished difference Result 352 states and 823 transitions. [2018-12-02 15:10:55,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 15:10:55,308 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2018-12-02 15:10:55,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 15:10:55,310 INFO L225 Difference]: With dead ends: 352 [2018-12-02 15:10:55,310 INFO L226 Difference]: Without dead ends: 352 [2018-12-02 15:10:55,310 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 15:10:55,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2018-12-02 15:10:55,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2018-12-02 15:10:55,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2018-12-02 15:10:55,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 823 transitions. [2018-12-02 15:10:55,317 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 823 transitions. Word has length 34 [2018-12-02 15:10:55,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 15:10:55,317 INFO L480 AbstractCegarLoop]: Abstraction has 352 states and 823 transitions. [2018-12-02 15:10:55,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 15:10:55,317 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 823 transitions. [2018-12-02 15:10:55,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-02 15:10:55,318 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 15:10:55,318 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] [2018-12-02 15:10:55,319 INFO L423 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 15:10:55,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 15:10:55,319 INFO L82 PathProgramCache]: Analyzing trace with hash 79360814, now seen corresponding path program 3 times [2018-12-02 15:10:55,319 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 15:10:55,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:10:55,322 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 15:10:55,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:10:55,323 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 15:10:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 15:10:55,346 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 15:10:55,346 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 15:10:55,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 15:10:55,346 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 15:10:55,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 15:10:55,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 15:10:55,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 15:10:55,347 INFO L87 Difference]: Start difference. First operand 352 states and 823 transitions. Second operand 3 states. [2018-12-02 15:10:55,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 15:10:55,366 INFO L93 Difference]: Finished difference Result 299 states and 691 transitions. [2018-12-02 15:10:55,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 15:10:55,367 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2018-12-02 15:10:55,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 15:10:55,367 INFO L225 Difference]: With dead ends: 299 [2018-12-02 15:10:55,367 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 15:10:55,367 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 15:10:55,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 15:10:55,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 15:10:55,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 15:10:55,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 15:10:55,368 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2018-12-02 15:10:55,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 15:10:55,368 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 15:10:55,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 15:10:55,368 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 15:10:55,368 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 15:10:55,370 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-12-02 15:10:55,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:10:55 BasicIcfg [2018-12-02 15:10:55,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 15:10:55,372 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 15:10:55,372 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 15:10:55,372 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 15:10:55,372 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:10:54" (3/4) ... [2018-12-02 15:10:55,375 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 15:10:55,379 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2018-12-02 15:10:55,382 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-12-02 15:10:55,382 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-02 15:10:55,408 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_94aecc6b-96bf-4d7d-8e43-722297c4f753/bin-2019/utaipan/witness.graphml [2018-12-02 15:10:55,408 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 15:10:55,409 INFO L168 Benchmark]: Toolchain (without parser) took 1180.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 947.0 MB in the beginning and 967.9 MB in the end (delta: -20.9 MB). Peak memory consumption was 100.2 MB. Max. memory is 11.5 GB. [2018-12-02 15:10:55,410 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 15:10:55,410 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -150.5 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2018-12-02 15:10:55,410 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.42 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 15:10:55,410 INFO L168 Benchmark]: Boogie Preprocessor took 20.62 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 15:10:55,411 INFO L168 Benchmark]: RCFGBuilder took 214.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. [2018-12-02 15:10:55,411 INFO L168 Benchmark]: TraceAbstraction took 575.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 967.9 MB in the end (delta: 103.7 MB). Peak memory consumption was 103.7 MB. Max. memory is 11.5 GB. [2018-12-02 15:10:55,411 INFO L168 Benchmark]: Witness Printer took 36.48 ms. Allocated memory is still 1.2 GB. Free memory is still 967.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 15:10:55,413 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 300.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -150.5 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.42 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.62 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 214.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 575.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 967.9 MB in the end (delta: 103.7 MB). Peak memory consumption was 103.7 MB. Max. memory is 11.5 GB. * Witness Printer took 36.48 ms. Allocated memory is still 1.2 GB. Free memory is still 967.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 649]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 667]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 649]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 77 locations, 3 error locations. SAFE Result, 0.5s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 426 SDtfs, 164 SDslu, 183 SDs, 0 SdLazy, 74 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=561occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 337 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 169 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 163 ConstructedInterpolants, 0 QuantifiedInterpolants, 5655 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...